TY - GEN A1 - Seiffert, Thomas A1 - Nenov, Rossen A1 - Maurer, Thomas A1 - Gerwin, Werner A1 - Veste, Maik A1 - Raab, Thomas ED - Holzheu, Stefan ED - Thies, B. T1 - Microdrone-based photogrammetry for water catchment monitoring T2 - Dimensions of ecology - from global change to molecular ecology, (GfÖ) 39th annual conference, University of Bayreuth, 14th - 18th September 2009 Y1 - 2009 SP - S. 129 PB - Bayreuther Zentrum für Ökologie und Umweltforschung (BayCEER) Selbstverlag CY - Bayreuth ER - TY - GEN A1 - Raab, Thomas A1 - Krümmelbein, Julia A1 - Schneider, Anna A1 - Gerwin, Werner A1 - Maurer, Thomas A1 - Naeth, M. Anne T1 - Initial Ecosystem Processes as Key Factors of Landscape Development - A Review T2 - Physical Geography Y1 - 2012 SN - 1930-0557 VL - 33 IS - 4 SP - 305 EP - 343 ER - TY - CHAP A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Raab, Thomas T1 - Evolution of hydro-geomorphic connectivity in an experimental catchment T2 - American Geophysical Union, Fall Meeting San Franisco, USA, 2014 N2 - During initial phases of landform evolution, the surface of sediment bodies is commonly not yet equilibrated with the environmental conditions and is thus liable to rapid changes by accelerated geomorphic activity. Hydro-geomorphic processes acting during these early development phases often lead to the emergence of surface structures that constitute the boundary conditions for further ecosystem development, and of linear erosion features that act as pathways for water, solute and sediment transport, and thus can increase the system's connectivity. Studies on initial landform evolution are often limited to relatively small-scale experiments or rely on modeling exercises. Larger-scale experiments can be carried out in constructed hydrological catchments with well-known and documented initial conditions. The central aim of this work was to describe the hydro-geomorphic surface structure evolution during the initial years of ecosystem development, its dependence on initial and boundary conditions; and on its relations to hydro-geomorphic connectivity. The data are from the 6-ha, constructed hydrological catchment 'Hühnerwasser'. Hydro-geomorphic development was quantified using a combined analysis of digital elevation models and aerial photographs. Empirical results were compared with those obtained with a numerical landscape evolution model. Phases of rill network growth, contraction and stabilization could be characterized. Results show influences of initial morphology, precipitation characteristics, and developing structure-process-interactions on rill network geometry and connectivity increase in the catchment. The results suggest that phases of hydro-geomorphic surface structure evolution can be related to the spatial organization of surface flow patterns during initial phases of landform development. Y1 - 2014 UR - http://adsabs.harvard.edu/abs/2014AGUFM.H52B..02S N1 - H52B-02 ER - TY - GEN A1 - Byizigiro, Rutazuyaza Vaillant A1 - Raab, Thomas A1 - Maurer, Thomas T1 - Small-scale opencast mining: an important research field for anthropogenic geomorphology T2 - Die Erde N2 - Artisanal and small-scale mining (A&SM) is a growing economic sector in many third-world countries. This review focuses on anthropo-geomorphic factors and processes associated with small-scale opencast mining (SSOM), a form of A&SM in which near-surface ores are extracted by removing relatively thin covers of soil, bedrock or sediments. Being widespread and commonly conducted without proper planning and beyond the control of local authorities, this form of mining has potentially large impacts on landforms and landscape dynamics, often resulting in drastic consequences for the local environment and agriculture. SSOM should be regarded as a component of anthropogenic geomorphology because it involves the role of humans in creating landforms and modifying the operation of natural geomorphological processes, such as weathering, erosion, transport and deposition. By initiating new and modifying natural geomorphic processes, SSOM causes and/or accelerates geomorphic processes, resulting in various forms of land degradation. While the direct geomorphic impact of SSOM is in general easily discernible and leads to characteristic features, such as excavated pits and overburden spoil heaps, many secondary impacts are attributed to geomorphic processes triggered in the wake of the primary mining-induced landscape alterations. The magnitude of such secondary implications may well extend beyond the actual mining areas, but these effects have not been thoroughly addressed in the research so far. This review summarizes the known studies on the geomorphic impacts of SSOM operations and highlights common geomorphic processes and landforms associated with this type of anthropogenic activity, thus establishing a starting point for further in-depth research. Y1 - 2015 U6 - https://doi.org/10.12854/erde-146-21 VL - 146 IS - 4 SP - 213 EP - 231 ER - TY - CHAP A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Raab, Thomas T1 - Initial phases of landform evolution in a small catchment T2 - European Geosciences Union, General Assembly 2014, Vienna, Austria, 27 April – 02 May 2014 N2 - During initial phases of landform evolution, the surface of sediment bodies is commonly not yet equilibrated with the environmental conditions and is thus liable to rapid changes by accelerated geomorphic activity. Geomorphic processes acting during these early development phases depend on the initial sediment composition and the subsurface and surface structures of the geosystem; at the same time, these processes lead to landscape structures that constitute boundary conditions for further ecosystem development. Y1 - 2014 UR - http://meetingorganizer.copernicus.org/EGU2014/EGU2014-2789-1.pdf N1 - EGU2014-2789-1 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Nenov, Rossen A1 - Raab, Thomas T1 - Hydro-geomorphic differentiation of an artificial catchment during the initial phase of ecosystem development T2 - AGU Fall Meeting 2011, San Francisco, Calif., 5-9 Dec. 2011 Y1 - 2011 SP - H31A-1134 ER - TY - CHAP A1 - Gerke, Horst H. A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Raab, Thomas T1 - Quantification and reconstruction of Initial 3D Sediment Mass Distribution in an Artificially-Created Catchment Area Using GOCAD T2 - American Geophysical Union, Fall Meeting - Eos transactions N2 - For systems such as soils or watersheds, the initial distribution of sediment mass and composition at the starting point of the development are mostly not well-known. The development of such systems, however, has frequently been assumed to depend on boundary and initial conditions including the solid phase. Here, an experimental watershed of about 6 ha surface area was artificially-created in order to imitate an initial stage just at the beginning of the geo-ecosystem development. However, sediment homogeneity could not be achieved for this large-scale field experiment, and the 3D spatial distribution of structures and components remained uncertain. The objective of this study was to quantify and reconstruct the initial sediment distribution and the first development stages using aerial photographs, point information, and a 3D model. The watershed was made of coarse-textured sediments of quaternary origin with a low permeable clay liner as the bottom boundary. A 2D horizontal digital elevation model (DEM) of the surface and a DEM of the subsurface clay layer are used to construct a 3D triangulated numerical grid of the catchment’s initial spatial structure using the 3D-GIS software GOCAD. Physical and chemical soil properties obtained from borehole samples are assigned to this model and interpolated onto the 3D grid. The volumetric changes in space and time are quantified and related to material properties to obtain the mass changes. Correlations between terrain attributes, sediment properties, and mass changes are explored specifically in regions of differing source materials. A temporal sequence of surface DEMs is obtained from photogrammetric, high-precision ground based laser scanning and airborne laser scanning data. 3D models of elevation change are constructed from these DEMs. The processes following the initial state are mainly characterized by runoff-induced erosive mass relocations related to the distribution of surface and subsurface structures and sediment properties. The results suggest that both sediment structures and mass translocations differ between the western and eastern parts of the watershed and that correlations between initial surface structures and subsequent mass changes exist. KW - Biogeosciences KW - Biogeosciences / Ecosystems, structure and dynamics KW - Biogeosciences / Modeling KW - Biogeosciences / Soils / pedology KW - Earth and Planetary Surface Processes (EP) KW - 2009 Fall Meeting Y1 - 2009 N1 - EP31B-0592 Abstract VL - 90 IS - 52, Suppl. ER - TY - GEN A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Seifert, Stefan A1 - Nenov, Rossen A1 - Hüttl, Reinhard F. T1 - Evaluation of remotely-sensed DEMs and modification based on plausibility rules and initial sediment budgets of an artificially-created catchment T2 - Earth Surface Processes and Landforms Y1 - 2012 SN - 1096-9837 VL - 37 IS - 7 SP - 708 EP - 725 ER - TY - GEN A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - Modelling aeolian sediment transport during initial soil development on an artificial catchment using WEPS and aerial images T2 - Soil & Tillage Research Y1 - 2011 SN - 0167-1987 VL - 117 SP - 148 EP - 162 ER - TY - GEN A1 - Maurer, Thomas A1 - Herrmann, Ludger A1 - Stahr, Karl T1 - The effect of surface variability factors on wind-erosion susceptibility: A field study in SW Niger T2 - Journal of Plant Nutrition and Soil Science Y1 - 2009 U6 - https://doi.org/10.1002/jpln.200800141 SN - 1522-2624 VL - 172 IS - 6 SP - 798 EP - 807 ER - TY - GEN A1 - Herrmann, Ludger A1 - Jahn, Reinhold A1 - Maurer, Thomas T1 - Mineral dust around Sahara - from source to sink. A review with emphasis on contributions of the German soil science community in the last twenty years T2 - Journal of Plant Nutrition and Soil Science Y1 - 2010 SN - 1522-2624 VL - 173 IS - 6 SP - 811 EP - 821 ER - TY - GEN A1 - Maurer, Thomas A1 - Herrmann, Ludger A1 - Stahr, Karl T1 - Wind erosion charcteristics of Sahelian surface types T2 - Earth Surface Processes and Landforms Y1 - 2010 SN - 1096-9837 VL - 35 IS - 12 SP - 1386 EP - 1401 ER - TY - GEN A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - Scenario-Based Three-Dimensional Distributed Sediment Structures for a Constructed Hydrological Catchment T2 - Vadose zone journal N2 - Many processes in a developing catchment can only be fully understood if the spatial heterogeneity is adequately described. Process-based modeling allows reproducing specific key structural elements of catchments. Constructed catchments are ideal test objects because of the well-known spatial conditions. In our study, we (i) modeled the entire process chain of catchment construction, (ii) established a consistent sediment mass/ volume balance between the excavated outcrop and the generated catchment model, and (iii) provided consistent three-dimensional distributions of texture and bulk density for deriving soil hydraulic properties. Data are from the 6 ha Hühnerwasser catchment (Chicken Creek, Lower Lusatia, Germany), which was constructed from overburden sediments in an open-cast lignite mine. Uncertainty about the parent material origin was captured in a multiscenario approach based on a geological model of the outcrop site and the simulation of excavation procedures. Generated distributions are incorporated in a gridded threedimensional volume model (GOCAD), and results were evaluated by semivariogram analysis and by quantifying point-to-point deviations. Filling and compaction are modeled based on three-dimensional volume analysis and mass balances of dumped sediments. Heterogeneities reflect both the batch-wise sediment variation and the succession of excavated geological units. The scale of the generated spatial models can be adjusted for three-dimensional hydrological catchment modeling while three-dimensional sediment mass balances can be used for analyzing soil and ecosystem development processes. Y1 - 2013 U6 - https://doi.org/10.2136/vzj2013.02.0047 SN - 1539-1663 VL - 12 IS - 4 ER - TY - GEN A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Schneider, Anna T1 - A Three-Dimensional Structure and Process Model for Integrated Hydro-Geo-Pedologic Analysis of a Constructed Hydrological Catchment T2 - Vadose zone journal N2 - A structure model describes the boundary geometries and the three-dimensional solid phase distributions of the catchment. In contrast to an established ecosystem, feedback relations can be assumed for an initial geosystem between the development of spatial structures and the water and element fluxes. The objective was to develop a hydrological catchment model as a three-dimensional spatial database of the solid phase that allows an integrative analysis, a periodical mass balance, and the generation of distributed model parameters for the developing system. Data were from the constructed catchment “Chicken Creek.” The initial texture and bulk density distributions were generated by imitating sediment dumping, segregation, and compaction. Boundary geometries and changes in surface topography due to erosion and sedimentation processes were quantified on the basis of digital elevation models (DEMs) derived from aerial photographs. The catchment was visualized with the three-dimensional software GoCad; the “emergence” of the water table and other structures (e.g., soil horizons, root zone) could be spatially assigned and quantified to identify regions with specific processes. A combination of three-dimensional catchment with time-dependent two-dimensional surface models allowed generating the development of spatially distributed erosion–deposition patterns that formed new initial surfaces. The three-dimensional distributed solid phase structure of the catchment allowed for a more direct comparison with observations using minimal invasive methods. The mass balance of the solids could be related with pedologic development and transfer to other geopedologic systems achieved by adapting sediment transport and deposition in the descriptions of the model. This model may help improve the integrative analysis of hydrological catchments. Y1 - 2013 U6 - https://doi.org/10.2136/vzj2013.02.0040 SN - 1539-1663 VL - 12 IS - 4 ER - TY - GEN A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Nenov, Rossen T1 - Initial hydro-geomorphic development and rill network evolution in an artificial catchment T2 - Earth Surface Processes and Landforms N2 - The formation of erosion rills and gullies is a critical step in land surface development, but possibilities to study initial unaffected surface development under natural conditions and with well-defined initial and boundary conditions are rare. The objective of this study was to characterize rill network development from ’point zero’ in the artificially-created catchment ‘Hühnerwasser’. To ensure unaffected development, the study was largely restricted to the analysis of remotely-sensed data. We analyzed a series of photogrammetry-based digital elevation models (DEMs) for 10 points in time, over a period of five years and beginning with the initial state. The evolving erosion rill network was quantitatively described based on mapping from aerial photographs. DEMs and rill network maps were combined to specifically analyze the development of morphometry for different parts of the network and to characterize energy dissipation and connectivity. The restriction to remote-sensing data did not allow for analyzing specific processes governing rill network development, nevertheless, two major development phases could be characterized. We observed a phase of growth of the rill network along with variations in drainage patterns during the first two years of development and a subsequent phase of reduction of its area along with comparably stable patterns. Region-specific analysis of morphometry indicates that, besides effects of changing sediment characteristics and vegetation cover development, locally evolving hydro-geomorphic feedback cycles influenced this development. Results show an increasing similarity of overall statistical characteristics (e.g. drainage density) for two parts of the catchment, but a persistent influence of initial conditions on specific rill geometry. The observed development towards higher orderliness and increased connectivity is consistent with experiments and concepts on drainage network evolution across scales; however, we did not observe major influences of rill piracy and cross grading or a reduction of energy dissipation with network development. Y1 - 2013 U6 - https://doi.org/10.1002/esp.3384 SN - 1096-9837 VL - 38 IS - 13 SP - 1496 EP - 1512 ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - Modelling the initial structure dynamics of soil and sediment exemplified for a constructed hydrological catchment T2 - European Geosciences Union, General Assembly 2016, Vienna, Austria N2 - The structure of a hydrological catchment is determined by the geometry of the boundaries and the spatial distribution of soil and sediment properties. Models of the 3D subsurface structure and the soil heterogeneity have often been built based on geostatistical approaches and conditional simulations for spatial interpolation between measurements. Here, an alternative model was proposed that generated 3D subsurface structures by imitating basic structures resulting from mass distribution processes. Instead of directly assuming stochastic variations of the subsurface structure, the present approach assumed stochastic variations in parameters of the process-based algorithms of the generator models. The constructed hydrological catchment “Hühnerwasser” located in the Lower Lusatia region of Brandenburg, Germany, was used as an example for the development of such a 3D structure generator model. Boundary geometries and changes in the surface topography due to erosion and sedimentation processes were quantified on the basis of digital elevation models (DEMs) derived from aerial photographs and terrestrial laser scanning information. Basic sediment properties came i) from a geological model of the parent material at the outcrop site, ii) from actual soil sample measurements on-site, and iii) based on stochastic texture variations. Sediment distributions were generated according to construction processes such as sediment dumping, particle segregation, and soil compaction. The resulting internal structures reflect the formation of spoil cones and surface compaction by machinery. The simulated 3D model scenarios of soil texture and bulk density distributions were incorporated in a gridded 3D volume model using the 3D software tool GoCAD (Paradigm Ltd.). This 3D distributed solid phase structure of the catchment allowed for a more direct comparison with observations using minimal invasive methods. By including structural changes over time (e.g., derived from DEM’s), spatially-distributed solid mass balances can be inferred based on the comparison of 3D structure models for subsequent time steps, which is a basic information for studying soil development. The 3D structure model as spatial database of the solid phase allows an integrative analysis, a periodical mass balance, and a mechanistic process-based generation of complex realizations of distributed hydraulic model parameters for the exemplary catchment. Y1 - 2016 UR - http://meetingorganizer.copernicus.org/EGU2016/EGU2016-6219.pdf N1 - EGU2016-6219 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Caviedes-Voullième, Daniel A1 - Hinz, Christoph A1 - Gerke, Horst H. T1 - Dynamik der initialen (öko-) hydrologischen Entwicklung – Modellierung von Anfangsbedingungen und Wasserflüssen in einem exemplarischen Einzugsgebiet T2 - Abstract-Sammlung zu Posterbeiträgen, eingereicht zum Tag der Hydrologie in Trier 2017, 23. 03. – 24. 03. 2017 Y1 - 2017 UR - https://www.uni-trier.de/fileadmin/fb6/prof/PHY/PDF-Dateien/TdH2017_4Abstracts_Poster.pdf SP - S. 20 ER - TY - CHAP A1 - Maurer, Thomas A1 - Pohle, Ina A1 - Oeser, Anne A1 - Sieber, André A1 - Hinz, Christoph T1 - Investigating the interrelations between throughfall, meteorological variables and vegetation structure in a developing hydrological catchment T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 N2 - In landscapes with heterogeneous vegetation structure, interception and throughfall patterns produce spatiotemporal variability of soil moisture. This variability is important for eco-hydrological processes, in particular on small spatial scales up to the catchment scale. Throughfall depends on vegetation structure, whereas vegetation development is presumably co-determined by the spatio-temporal distribution of throughfall itself. In addition to vegetation structure, meteorological factors like wind speed and rainfall intensity also have an impact on throughfall. The objective of this study is to quantify the influence of vegetation structure and meteorological variables on spatial (and in the long run the temporal) variability of throughfall. For that purpose, we developed an approach combining field methods, image analysis and multivariate statistics. The 6-ha constructed catchment ‚Hühnerwasser‘ (aka Chicken Creek, southern Brandenburg, Germany) offers ideal conditions for the investigation of eco-hydrological feedback processes. After more than 10 years of development, vegetation structure on the catchment is spatially heterogeneous and evolves through natural succession. Furthermore, complementary meteorological data are available on-site. Throughfall was measured using 50 tipping-bucket rain gauges, which are aligned along two transects in 0.5 and 1 m heights, covering the dominating vegetation types on the catchment (e.g., robinia, sallow thorn, reed, reedgrass, herbs). The spatial distribution of vegetation structures around each measurement site was recorded with hemispheric photographs, which were subsequently analyzed using image processing techniques. Two weather stations provide reference values for precipitation and relevant meteorological variables for wind speed and direction, air humidity, temperature and irradiation. The amount and distribution of precipitation measured in scarcely vegetated areas of the catchment widely correspond with values from the reference weather stations. Under dense vegetation, very heterogeneous values were recorded, which can be explained by i) canopy interception, and ii) fetching effects. The results of this study can serve as basis for interception models and may also contribute to complex eco-hydrological models. Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-7391.pdf N1 - EGU2017-7391 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Caviedes-Voullième, Daniel A1 - Hinz, Christoph A1 - Gerke, Horst H. T1 - Flow processes on the catchment scale – modeling of initial structural states and hydrological behavior in an artificial exemplary catchment T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 N2 - Landscapes that are heavily disturbed or newly formed by either natural processes or human activity are in a state of disequilibrium. Their initial development is thus characterized by highly dynamic processes under all climatic conditions. The primary distribution and structure of the solid phase (i.e. mineral particles forming the pore space) is one of the decisive factors for the development of hydrological behavior of the eco-hydrological system and therefore (co-) determining for its – more or less – stable final state. The artificially constructed ‚Hühnerwasser‘ catchment (a 6 ha area located in the open-cast lignite mine Welzow-Süd, southern Brandenburg, Germany) is a landscape laboratory where the initial eco-hydrological development is observed since 2005. The specific formation (or construction) processes generated characteristic sediment structures and distributions, resulting in a spatially heterogeneous initial state of the catchment. We developed a structure generator that simulates the characteristic distribution of the solid phase for such constructed landscapes. The program is able to generate quasi-realistic structures and sediment compositions on multiple spatial levels (1 cm up to ∼ 100 m scale). The generated structures can be i) conditioned to actual measurement values (e.g., soil texture and bulk distribution); ii) stochastically generated, and iii) calculated deterministically according to the geology and technical processes at the excavation site. Results are visualized using the GOCAD software package and the free software Paraview. Based on the 3D-spatial sediment distributions, effective hydraulic van-Genuchten parameters are calculated using pedotransfer functions. The hydraulic behavior of different sediment distribution (i.e. versions or variations of the catchment’s porous body) is calculated using a numerical model developed by one of us (Caviedes-Voullième). Observation data are available from catchment monitoring are available for i) determining the boundary conditions (e.g., precipitation), and ii) the calibration / validation of the model (catchment discharge, ground water). The analysis of multiple sediment distribution scenarios should allow to approximately determine the influx of starting conditions on initial development of hydrological behavior. We present first flow modeling results for a reference (conditioned) catchment model and variations thereof. We will also give an outlook on further methodical development of our approach. Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-6639.pdf N1 - EGU2017-6639 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Pohle, Ina A1 - Hu, Yuzhu A1 - Schaaf, Wolfgang A1 - Gerwin, Werner A1 - Maurer, Thomas A1 - Hinz, Christoph T1 - Hydrogeochemische Signaturen der Einzugsgebietsentwicklung – die Rolle der Calcium- und Sulfatfreisetzung im Hühnerwassereinzugsgebiet T2 - Abstract-Sammlung zu Posterbeiträgen, eingereicht zum Tag der Hydrologie in Trier 2017, 23. 03. – 24. 03. 2017 Y1 - 2017 UR - https://www.uni-trier.de/fileadmin/fb6/prof/PHY/PDF-Dateien/TdH2017_4Abstracts_Poster.pdf SP - S. 5 ER - TY - CHAP A1 - Pohle, Ina A1 - Niebisch, Michael A1 - Zha, Tingting A1 - Schümberg, Sabine A1 - Müller, Hannes A1 - Maurer, Thomas A1 - Hinz, Christoph T1 - A stochastical event-based continuous time step rainfall generator based on Poisson rectangular pulse and microcanonical random cascade models T2 - European Geosciences Union General Assembly 2017 Vienna, Austria, 23–28 April 2017 N2 - Rainfall variability within a storm is of major importance for fast hydrological processes, e.g. surface runoff, erosion and solute dissipation from surface soils. To investigate and simulate the impacts of within-storm variabilities on these processes, long time series of rainfall with high resolution are required. Yet, observed precipitation records of hourly or higher resolution are in most cases available only for a small number of stations and only for a few years. To obtain long time series of alternating rainfall events and interstorm periods while conserving the statistics of observed rainfall events, the Poisson model can be used. Multiplicative microcanonical random cascades have been widely applied to disaggregate rainfall time series from coarse to fine temporal resolution. We present a new coupling approach of the Poisson rectangular pulse model and the multiplicative microcanonical random cascade model that preserves the characteristics of rainfall events as well as inter-storm periods. In the first step, a Poisson rectangular pulse model is applied to generate discrete rainfall events (duration and mean intensity) and inter-storm periods (duration). The rainfall events are subsequently disaggregated to high-resolution time series (user-specified, e.g. 10 min resolution) by a multiplicative microcanonical random cascade model. One of the challenges of coupling these models is to parameterize the cascade model for the event durations generated by the Poisson model. In fact, the cascade model is best suited to downscale rainfall data with constant time step such as daily precipitation data. Without starting from a fixed time step duration (e.g. daily), the disaggregation of events requires some modifications of the multiplicative microcanonical random cascade model proposed by Olsson (1998): Firstly, the parameterization of the cascade model for events of different durations requires continuous functions for the probabilities of the multiplicative weights, which we implemented through sigmoid functions. Secondly, the branching of the first and last box is constrained to preserve the rainfall event durations generated by the Poisson rectangular pulse model. The event-based continuous time step rainfall generator has been developed and tested using 10 min and hourly rainfall data of four stations in North-Eastern Germany. The model performs well in comparison to observed rainfall in terms of event durations and mean event intensities as well as wet spell and dry spell durations. It is currently being tested using data from other stations across Germany and in different climate zones. Furthermore, the rainfall event generator is being applied in modelling approaches aimed at understanding the impact of rainfall variability on hydrological processes. Y1 - 2017 UR - http://meetingorganizer.copernicus.org/EGU2017/EGU2017-9648.pdf N1 - EGU2017-9648 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Pohle, Ina A1 - Oeser, Anne A1 - Sieber, André A1 - Hinz, Christoph T1 - Bestimmung der Zusammenhänge zwischen Bestandsniederschlag, meteorologischen Variablen und Vegetationsstruktur in einem sich entwickelnden Einzugsgebiet T2 - Abstract-Sammlung zu Posterbeiträgen, eingereicht zum Tag der Hydrologie in Trier 2017, 23. 03. – 24. 03. 2017 Y1 - 2017 UR - https://www.uni-trier.de/fileadmin/fb6/prof/PHY/PDF-Dateien/TdH2017_4Abstracts_Poster.pdf SP - S. 34 ER - TY - CHAP A1 - Maurer, Thomas A1 - Brück, Yasemine A1 - Hinz, Christoph A1 - Gerke, Horst H. T1 - Modeling 3D soil and sediment distributions for assessing catchment structure and hydrological feedbacks T2 - European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015 Y1 - 2015 UR - http://meetingorganizer.copernicus.org/EGU2015/EGU2015-12519.pdf N1 - EGU2015-12519 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Trujillo Siliézar, Carlos Gustavos A1 - Oeser, Anne A1 - Pohle, Ina A1 - Hinz, Christoph T1 - A methodology for investigating interdependencies between measured throughfall, meteorological variables and canopy structure on a small catchment T2 - European Geosciences Union, General Assembly 2016, Vienna, Austria N2 - In evolving initial landscapes, vegetation development depends on a variety of feedback effects. One of the less understood feedback loops is the interaction between throughfall and plant canopy development. The amount of throughfall is governed by the characteristics of the vegetation canopy, whereas vegetation pattern evolution may in turn depend on the spatio-temporal distribution of throughfall. Meteorological factors that may influence throughfall, while at the same time interacting with the canopy, are e.g. wind speed, wind direction and rainfall intensity. Our objective is to investigate how throughfall, vegetation canopy and meteorological variables interact in an exemplary eco-hydrological system in its initial development phase, in which the canopy is very heterogeneous and rapidly changing. For that purpose, we developed a methodological approach combining field methods, raster image analysis and multivariate statistics. The research area for this study is the Hühnerwasser (‘Chicken Creek’) catchment in Lower Lusatia, Brandenburg, Germany, where after eight years of succession, the spatial distribution of plant species is highly heterogeneous, leading to increasingly differentiated throughfall patterns. The constructed 6-ha catchment offers ideal conditions for our study due to the rapidly changing vegetation structure and the availability of complementary monitoring data.Throughfall data were obtained by 50 tipping bucket rain gauges arranged in two transects and connected via a wireless sensor network that cover the predominant vegetation types on the catchment (locust copses, dense sallow thorn bushes and reeds, base herbaceous and medium-rise small-reed vegetation, and open areas covered by moss and lichens). The spatial configuration of the vegetation canopy for each measurement site was described via digital image analysis of hemispheric photographs of the canopy using the ArcGIS Spatial Analyst, GapLight and ImageJ software. Meteorological data from two on-site weather stations (wind direction, wind speed, air temperature, air humidity, insolation, soil temperature, precipitation) were provided by the ‘Research Platform Chicken Creek’. Data were combined and multivariate statistical analysis (PCA, cluster analysis, regression trees) were conducted using the R-software to i) obtain statistical indices describing the relevant characteristics of the data and ii) to identify the determining factors for throughfall intensity. The methodology is currently tested and results will be presented. Preliminary evaluation of the image analysis approach showed only marginal, systematic deviation of results for the different software tools applied, which makes the developed workflow a viable tool for canopy characterization. Results from this study will have a broad spectrum of possible applications, for instance the development / calibration of rainfall interception models, the incorporation into eco-hydrological models, or to test the fault tolerance of wireless rainfall sensor networks. Y1 - 2016 UR - http://meetingorganizer.copernicus.org/EGU2016/EGU2016-4729-1.pdf N1 - EGU2016-4729-1 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Maurer, Thomas A1 - Caviedes-Voullième, Daniel A1 - Gerke, Horst H. A1 - Hinz, Christoph T1 - A 3D-spatial approach for modeling soil hydraulic property distributions on the artificial Huehnerwasser catchment T2 - Geophysical Research Abstracts N2 - Knowledge of catchment 3D spatial heterogeneity is crucial for the assessment and modeling of eco-hydrological processes. Especially during the initial development phase of a hydro-geo-system, the primary structural properties have the potential to determine further development pathways. Small-scale heterogeneity (cm to m scale) may have significant effects on processes on larger spatial scales, but is difficult to measure and quantify. The Hühnerwasser (Chicken Creek) catchment offers the unique opportunity to study early ecosystem development within an initial structural setup that is well-known, from the plot up to the catchment scale. Based on information on the open-cast mining technology, catchment boundaries and sediment properties, we developed a structure generator program for the process-based modeling of specific dumping structures and sediment property distributions on the catchment. The structure generator reproduces the trajectories of spoil ridges and can be conditioned to reproduce actual sediment distributions according to remote sensing and soil sampling data. Alternatively, sediment distribution scenarios can be generated based on geological data from the excavation site, or can be distributed stochastically. Using pedotransfer functions, the effective hydraulic van-Genuchten parameters are then calculated from sediment texture and bulk density. The main application of the 3D catchment model is to provide detailed 3D-distributed flow domain information for hydrological flow modeling. Observation data are available from catchment monitoring are available for determining the boundary conditions (e.g., precipitation), and the calibration / validation of the model (catchment discharge, ground water). The analysis of multiple sediment distribution scenarios allows to evaluate the effect of initial conditions on hydrological behavior development. Generally, the modeling approach can be used to pinpoint the influx of specific soil structural features on ecohydrological processes across spatial scales. Y1 - 2019 UR - https://meetingorganizer.copernicus.org/EGU2019/EGU2019-5378.pdf VL - 21 ER - TY - GEN A1 - Pohle, Ina A1 - Niebisch, Michael A1 - Müller, Hannes A1 - Schümberg, Sabine A1 - Zha, Tingting A1 - Maurer, Thomas A1 - Hinz, Christoph T1 - Coupling Poisson rectangular pulse and multiplicative microcanonical random cascade models to generate subdaily precipitation time series T2 - Journal of Hydrology N2 - To simulate the impacts of within-storm rainfall variabilities on fast hydrological processes, long precipi-tation time series with high temporal resolution are required. Due to limited availability of observed data such time series are typically obtained from stochastic models. However, most existing rainfall models are limited in their ability to conserve rainfall event statistics which are relevant for hydrological pro-cesses. Poisson rectangular pulse models are widely applied to generate long time series of alternating precipitation events durations and mean intensities as well as interstorm period durations. Multiplicative microcanonical random cascade (MRC) models are used to disaggregate precipitation time series from coarse to fine temporal resolution. To overcome the inconsistencies between the temporal structure of the Poisson rectangular pulse model and the MRC model, we developed a new coupling approach by introducing two modifications to the MRC model. These modifications comprise (a) a modified cascade model (“constrained cascade”) which preserves the event durations generated by the Poisson rectangular model by constraining the first and last interval of a precipitation event to contain precipitation and (b) continuous sigmoid func-tions of the multiplicative weights to consider the scale-dependency in the disaggregation of precipita-tion events of different durations. The constrained cascade model was evaluated in its ability to dis-aggregate observed precipitation events in comparison to existing MRC models. For that, we used a 20-year record of hourly precipitation at six stations across Germany. The constrained cascade model showed a pronounced better agreement with the observed data in terms of both the temporal pattern of the precipitation time series (e.g. the dry and wet spell durations and autocorrelations) and event char-acteristics (e.g. intra-event intermittency and intensity fluctuation within events). The constrained cas-cade model also slightly outperformed the other MRC models with respect to the intensity-frequency relationship. To assess the performance of the coupled Poisson rectangular pulse and constrained cascade model, precipitation events were stochastically generated by the Poisson rectangular pulse model and then disaggregated by the constrained cascade model. We found that the coupled model performs satisfac-torily in terms of the temporal pattern of the precipitation time series, event characteristics and the in-tensity-frequency relationship. KW - Rainfall generator KW - Disaggregation KW - Precipitation event KW - Autocorrelation KW - Within-event variability KW - Intra-event intermittency Y1 - 2018 U6 - https://doi.org/10.1016/j.jhydrol.2018.04.063 SN - 0022-1694 VL - 562 SP - 50 EP - 70 ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - Modelling the initial structure dynamics of soil and sediment exemplified for a constructed hydrological catchment T2 - European Geosciences Union, General Assembly 2014, Vienna, Austria, 27 April – 02 May 2014 N2 - Knowledge about spatial heterogeneity is of essential for the analysis of the hydrological catchment behavior. Heterogeneity is directly related to the distribution of the solid phase, and in initial hydrological systems, the solid phase is mainly composed of mineral particles. In artificial catchments, such sediment structures relate to the applied construction technology. It is supposed that the development of catchment ecosystems is strongly influenced by such specific initial spatial distributions of the solid phase. Moreover, during the initial development period, the primary structures in a catchment are altered rapidly by translocation processes, thereby subdividing the initial system in different compartments. Questions are: How does initial sediment distribution affect further structural development? How is catchment hydrology influenced by the initial structural development? What structures have a relevant impact on catchment-scale hydrological behavior? Y1 - 2014 UR - http://meetingorganizer.copernicus.org/EGU2014/EGU2014-12462-1.pdf N1 - EGU2014-12462-1 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Schapp, Andrea A1 - Büchner, Steffen A1 - Menzel, Hannes A1 - Hinz, Christoph T1 - Measurement of rainfall distribution on a small catchment for the evaluation of canopy interception effects T2 - European Geosciences Union, General Assembly 2014, Vienna, Austria, 27 April – 02 May 2014 N2 - Variability of rainfall and throughfall is an essential characteristic of the water balance at spatial scales ranging from meters to hundreds of meters or even kilometers. The amount of throughfall is governed by the characteristics of the vegetation canopy and the involved interception and stemflow effects. In initial, developing ecosystems, distinct patterns of the growing vegetation (e.g. patchiness) supposedly govern the spatial distribution of water in the system, thereby initiating and supporting hydro-ecological feedback processes. Questions are i) is the spatial variability of vegetation relevant for the system as a whole, and ii) how does the distribution of the effective precipitation (i.e. the infiltration) change over time in dependency of vegetation succession? We present the first results of a spatially distributed measurement approach of surface-near precipitation on the constructed catchment “Hühnerwasser” (“Chicken Creek”). The 6-ha site is located in the recultivation area of the lignite open-cast mine “Welzow-Süd” in Lower Lusatia, Brandenburg, Germany. Here, the free development of an initial ecosystem is investigated since September 2005. After eight years of succession, the spatial distribution of plant species is highly heterogeneous, and gains increasing influence on throughfall patterns, thus impacting the distribution of soil humidity and possibly even surface runoff. For spatially distributed precipitation measurement, 47 tipping bucket rain gauges were installed in heights of 0.5 m and 1.0 m along two transects on the catchment. Rain gauge data were collected by a wireless sensor node network provided by the Sens4U joint research project. The transects run NW-SE and NE-SW and cover the range of plant communities presently existing in the ecosystem: locust copses, dense sallow thorn bushes and reeds, base herbaceous and medium-rise small-reed vegetation, and open areas covered by moss and lichens. The raw measurement data were temporally aggregated using a VBA script in order to characterize interception for various types of precipitation events on different time scales. First results from the measurement period 17th July – 3rd September 2013 widely exhibit a good accordance with reference data from on-site weather stations for sites on open ground, while canopy sites show more heterogeneous values, either due to interception or due to canopy collection effects. However, it was found that the explanation of the differences between comparable sites requires an additional inclusion of other relevant parameters, e.g. wind speed and direction, screening effects, and specific canopy characteristics. Moreover, extreme precipitation events sometimes seemed to lead to incorrect measurements either by the sensor and / or node, which required supplementary quality controls of equipment and data. Results from future long-term measurements on the “Hühnerwasser” catchment will be used to identify possible plant-soil feedback mechanisms and to parameterize models that simulate the behavior of initial eco-hydrological systems Y1 - 2014 N1 - EGU2014-12176 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - Modelling of a aeolian sediment translocation on the soil surface of a small area using WEPS T2 - EGU General Assembly 2008, Wien Y1 - 2008 N1 - EGU2008-A-03636 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - Processes and modeling of initial landscape development – a review T2 - Vadose Zone Journal N2 - The development pathway of a landscape depends to a degree on the initial spatial distributions of mineral and organic components. The interaction between structures and ecohydrological processes during the critical initial development period is scarcely understood and often difficult to observe. While viable modeling approaches exist for most aspects of initial development (e.g., landscape evolution, vegetation succession), a deeper understanding of the prevailing feedback mechanisms requires a comprehensive, integrated modeling approach. We present a review of the current literature regarding the description of initial structures, the state-of-the-art of research on structure-forming processes and their interaction with existing and newly emerging structures, as well as the corresponding modeling efforts. The most relevant aspects are (i) sediment translocation processes and initial evolution of topography, (ii) surface crusting, (iii) vegetation succession, and (iv) the evolution of the soil pore space. Based on existing conceptions for integrated modeling of the coevolution of structures and ecohydrological behavior, we outline an integrative modeling framework that is based on a three-dimensional spatial structural model of initial sediment distributions, which can be used to: (i) analyze the spatiotemporal development dynamics depending on initial structures; and (ii) relate the simulated structural development to available observations of initial ecohydrological development. We discuss possible validation and generalization strategies of modeling results, and propose to define three-dimensional spatial functional catchment units (process domains) characterized by specific structural dynamics and the dominant ecohydrological processes. Y1 - 2016 UR - http://vzj.geoscienceworld.org/content/15/12/vzj2016.05.0048.full U6 - https://doi.org/10.2136/vzj2016.05.0048 SN - 1539-1663 VL - 15 IS - 12 ER - TY - CHAP A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - Bilanzierung der Sedimentmassen eines künstlichen Wassereinzugsgebiets mit einem 3D-Strukturmodell T2 - Böden - eine endliche Ressource, 5. - 13. September 2009, Bonn, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft Y1 - 2009 UR - http://eprints.dbges.de/252/1/SchneiderMaurerGerke_DBG2009.pdf PB - Deutsche Bodenkundliche Gesellschaft (Selbstverlag) CY - Bonn ER - TY - CHAP A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - Quantification of initial 3D sediment mass balance components in an artificially-created hydrologic catchment using GOCAD T2 - EGU General Assembly 2009, Vienna, Austria, 19 – 24 April 2009 Y1 - 2009 N1 - EGU2009-8700-3 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. ED - Ukonmaanaho, Liisa ED - Nieminen, Tiina Maileena ED - Starr, Michael T1 - A 3D structutre model of an artificially constructed soil-geo-system T2 - 6th International Symposium on Ecosystem Behaviour BIOGEOMON 2009 Y1 - 2009 UR - http://www.metla.fi/julkaisut/workingpapers/2009/mwp128.pdf SN - 978-951-40-2177-0 SP - S. 65 PB - Finnish Forest Research Institute CY - Vantaa, Finland ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. T1 - A 3D model describing the initial structure of an artificial hydrological catchment T2 - EGU General Assembly 2009, Vienna, Austria, 19 – 24 April 2009 Y1 - 2009 N1 - EGU2009-4877 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Dusek, J. A1 - Gerke, Horst H. A1 - Vogel, T. A1 - Maurer, Thomas A1 - Buczko, Uwe T1 - 2D dual permeability modeling of flow and transport in a two-scale structural lignitic mine soil T2 - EGU General Assembly 2009, Vienna, Austria, 19 – 24 April 2009 Y1 - 2009 N1 - EGU2009-10890 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Maurer, Thomas A1 - Bartsch, R. A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - A sediment structure model for describing the 3D spatial distribution of soil hydraulic properties of an artificial catchment using pedotransfer functions T2 - EGU General Assembly 2012, held 22-27 April, 2012 in Vienna Y1 - 2012 N1 - EGU2012-9785 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Maurer, Thomas A1 - Bartsch, R. A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - Modeling the initial 3D distribution of sediment structures of an artificial hydrological catchment T2 - EGU General Assembly 2012, held 22-27 April, 2012 in Vienna Y1 - 2012 N1 - EGU 2012-9828 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - A structure generator for modelling the initial sediment distribution of an artificial hydrologic catchment T2 - Hydrology and earth system sciences discussions Y1 - 2011 SN - 1812-2116 VL - 8 IS - 3 SP - 4641 EP - 4699 ER - TY - GEN A1 - Rösch, Janina J. A1 - Seidlitz, Holger A1 - Pfeifer, Robin A1 - Burlefinger, Hubert A1 - Maurer, Thomas T1 - Preform joints in embroidered fabrics – influence on the mechanical properties T2 - Advanced Composite Materials N2 - Preforms with large complex geometry, for example, body parts for the automotive industry, are consisted into multiple elements – so-called sub-preforms. Hereby the sub-preforms can be adjusted to different local load cases but joining of these sub-preforms also raises challenges. The preform joints are decisive to the mechanical properties of the final component. The state-of-the-art joint, a single lap, results in a variation of wall thickness with local redirection of fibre orientation. In this paper, the influence of alternative joints of embroidered fabrics is analysed regarding the resulting mechanical properties of the part. The built test specimen contains different preform joints with different process-relevant parameters. Such as gaps between the sub-preforms, to analyse the influence on the mechanical performance. To reveal the various defects like voids, air pockets and to validate the fibre orientation, computer tomography (CT) investigation was performed on the built plates. In addition, the influence in mechanical properties was also analysed. The overlapping is analysed with tensile strength test according to DIN EN ISO 527-4. Y1 - 2020 UR - https://www.tandfonline.com/doi/abs/10.1080/09243046.2020.1744345 SP - 1 EP - 16 ER - TY - CHAP A1 - Schaaf, Wolfgang A1 - Pohle, Ina A1 - Maurer, Thomas A1 - Gerwin, Werner A1 - Hinz, Christoph A1 - Badorreck, Annika T1 - Water balance dynamics of the constructed Chicken Creek catchment as influenced by 12 years of ecological development T2 - European Geosciences Union, General Assembly 2018, Vienna, Austria N2 - Experimental catchments with well-known boundaries and characteristics may contribute valuable data to hydrological, critical zone and landscape evolution research. One of the most well-established and largest constructed catchments is the Chicken Creek catchment (6 ha area including a 0.4 ha pond, Brandenburg, Germany) representing an initial ecosystem undergoing a highly dynamic ecological development starting from clearly defined starting conditions. The water balance dynamics of the catchment was calculated using a simple mass balance approach to reveal the impact of ecological development during 12 years. Water storage in the catchment was calculated from a 3D-model of groundwater volumes, soil moisture measurements and water level recordings of the pond. The catchment water balance equation was resolved for evapotranspiration, the only part that was not measured directly. Due to the known boundary conditions and the inner structure of the catchment, we were able to quantify the different storage compartments and their role in hydrologic response. Our results indicate that for small catchments with a highly dynamic ecological development like the Chicken Creek, the knowledge about saturated and unsaturated storage volumes enables a good estimate and closure of the water balance using a rather simple approach, at least in annual resolution. We found a significant relationship between vegetation cover in the catchment and calculated ET. Time series of meteorological, hydrological, soil and vegetation data over 12 years enabled us to characterize the transient development of the catchment and to evaluate the effect of different feedback mechanisms on catchment hydrology. The dataset from the Chicken Creek catchment indicate at least three phases in ecosystem development, where initial abiotic feedbacks (e.g. erosion) were followed by more and more biotic controls (e.g. biological soil crusts, vegetation succession and growth). Data from Chicken Creek in high spatial and temporal resolution provide a valuable database underlining the high importance of abiotic/biotic feedback effects that change the hydrologic functioning and response of the catchment more than the water balance itself revealed and thus have to be included in catchment models. Y1 - 2018 UR - https://meetingorganizer.copernicus.org/EGU2018/EGU2018-11977.pdf N1 - EGU2018-11977 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Nenov, Rossen A1 - Seifert, Stefan T1 - Quantification of initial sediment redistribution in an artificially-created catchment using a time series of digital elevation models T2 - European Geosciences Union General Assembly 2011, Vienna, Austria, 03 – 08 April 2011 Y1 - 2011 UR - http://meetingorganizer.copernicus.org/EGU2011/EGU2011-4686.pdf N1 - EGU2011-4686 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - BOOK A1 - Gerwin, Werner A1 - Schaaf, Wolfgang A1 - Biemelt, Detlef A1 - Elmer, Michael A1 - Maurer, Thomas A1 - Schneider, Anna T1 - The artificial catchment Hühnerwasser (Chicken Creek): Construction and initial properties Y1 - 2010 UR - http://opus.kobv.de/btu/volltexte/2011/2072/pdf/Ecol_Dev_Vol_1_2010.pdf PB - FZLB CY - Cottbus ER - TY - GEN A1 - Hofer, Markus A1 - Lehmann, Peter A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Stähli, Manfred A1 - Krafczyk, Manfred T1 - Modelling the emergence of surface erosion rills in an artificial catchment T2 - Structures and processes of the initial ecosystem development, 1st International Conference assoc. with 4th Meeting of Young Researchers in Earth Sciences (MYRES), 20-24 Sept. 2010, Cottbus, Germany Y1 - 2010 SP - S. 53 PB - BTU CY - Cottbus ER - TY - CHAP A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Klauke, A. A1 - Dominik, R. A1 - Dimitrov, M. A1 - Biemelt, Detlef A1 - Badorreck, Annika T1 - Modelling the initial 3D sediment structure of an artificially constructed hydrological catchment T2 - EGU General Assembly 2008, Wien Y1 - 2008 N1 - EGU2008-A-08558 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Dusek, J. A1 - Klauke, A. A1 - Badorreck, Annika ED - Blum, Winfried E. H. ED - Gerzabek, Martin H. ED - Vodrazka, Martin T1 - A 3D structural model of a lignitic mine soil based on classification and interpolation of profile images T2 - EUROSOIL 2008, Book of Abstracts, 25.-29. August 2008, Vienna, Austria Y1 - 2008 SN - 978-3-902382-05-4 SP - S. 175 PB - University of Natural Resources and Applied Life Sciences (BOKU) CY - Wien ER - TY - CHAP A1 - Zaplata, Markus Klemens A1 - Maurer, Thomas A1 - Boldt-Burisch, Katja A1 - Schaaf, Wolfgang A1 - Hinz, Christoph T1 - An interactive survey panel regarding the effects of mice (Microtus spec.) on a young ecosystem T2 - European Geosciences Union, General Assembly 2015, Vienna, Austria, 13 April - 17 May 2015 KW - interactive survey panel Y1 - 2015 UR - http://meetingorganizer.copernicus.org/EGU2015/EGU2015-13818.pdf N1 - EGU2015-13818 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - Modelling 3D subsurface structures of an artificial hydrological catchment using gOcad T2 - Proceedings of the 31st GOCAD Meeting, June 7th-10th, Nancy, France Y1 - 2011 PB - Association Scientifique pour Ia Geologie et ses Applications CY - Vandoeuvre-lès-Nancy ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. T1 - Reproducing the initial internal structural heterogeneity of an artificially created catchment T2 - Structures and processes of the initial ecosystem development, 1st International Conference assoc. with 4th Meeting of Young Researchers in Earth Sciences (MYRES), 20-24 Sept. 2010, Cottbus, Germany Y1 - 2010 SP - 76 EP - 77 PB - BTU CY - Cottbus ER - TY - GEN A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas T1 - 3D initial sediment distribution and quantification of mass balances of an artificially-created hydrological catchment based on DEMs from aerial photographs using GOCAD T2 - Physics and Chemistry of the Earth Y1 - 2011 UR - http://www.sciencedirect.com/science/article/pii/S1474706510000380 U6 - https://doi.org/10.1016/j.pce.2010.03.023 SN - 1474-7065 VL - 36 IS - 1-4 SP - 87 EP - 100 ER - TY - GEN A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Gerke, Horst H. T1 - A structure generator for modelling the initial sediment distribution of an artificial hydrologic catchment T2 - Hydrology and earth system sciences Y1 - 2011 SN - 1607-7938 VL - 15 IS - 12 SP - 3617 EP - 3638 ER - TY - GEN A1 - Schaaf, Wolfgang A1 - Pohle, Ina A1 - Maurer, Thomas A1 - Gerwin, Werner A1 - Hinz, Christoph A1 - Badorreck, Annika T1 - Water Balance Dynamics during Ten Years of Ecological Development at Chicken Creek Catchment T2 - Vadose Zone Journal N2 - Difficulties in quantitatively closing the water balance of catchments arise when upscaling point measurements and from insufficient knowledge of the physical boundaries, inner structure, and storage volumes of natural catchments. In addition, there is a strong need for generalizing the relationship between catchment characteristics and hydrological response. Therefore, experimental catchments with well-known boundaries and conditions could contribute valuable data to hydrological and critical zone research. One of the most well-established and largest constructed catchments is the Chicken Creek catchment (6 ha including a pond, Brandenburg, Germany) representing an initial ecosystem undergoing highly dynamic ecological development starting from clearly defined starting conditions. Directly after completion of the construction, extensive monitoring equipment was installed to track the ecosystem development and to capture the spatiotemporal variability of meteorological, hydrological, ecological, and soil conditions and vegetation succession. In this study, we focused on the water balance dynamics of the Chicken Creek catchment for the period 2005 to 2015 as influenced by ecological development. Water storage in the catchment was calculated from a three-dimensional model of groundwater volumes, soil moisture measurements, and water level recordings of the pond. The catchment water balance equation was resolved for evapotranspiration, the only part that was not measured directly. Time series of meteorological, hydrological, and ecological data for 10 yr enabled us to characterize the transient development of the catchment and to evaluate the effect of different feedback mechanisms on catchment hydrology. Y1 - 2017 U6 - https://doi.org/10.2136/vzj2017.04.0074 SN - 1539-1663 VL - 16 IS - 11 ER - TY - CHAP A1 - Hüttl, Reinhard F. A1 - Flühler, Hannes A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Schneider, Anna ED - Hüttl, Reinhard F. ED - Kögel-Knabner, Ingrid ED - Schulin, Rainer ED - Gerwin, Werner T1 - Project C5 – Development of a structure and process model T2 - Structures and processes of the initial ecosystem development phase in an artificial water catchment (Final report CRC/TR 38) Y1 - 2013 UR - http://opus.kobv.de/btu/volltexte/2013/2865/ SP - 101 EP - 110 PB - BTU, Forschungszentrum Landschaftsentwicklung und Bergbaulandschaften (FZLB) CY - Cottbus ER - TY - CHAP A1 - Maurer, Thomas A1 - Bartsch, Robert A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. T1 - Modellierung der strukturellen Heterogenität in einem künstlichen Wassereinzugsgebiet und Ableitung von hydraulischen Eigenschaften mittels Pedotransferfunktionen T2 - Böden verstehen, Böden nutzen, Böden fit machen, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, 3. - 9. September 2011 Y1 - 2011 UR - http://eprints.dbges.de/705/ ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. T1 - Modelling the structural heterogeneity of an artificial hydrological catchment T2 - EGU General Assembly 2011, Vienna, Austria, 03 – 08 April 2011 Y1 - 2011 UR - http://meetingorganizer.copernicus.org/EGU2011/EGU2011-11803.pdf SP - 11803 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - 3D-räumliche Beschreibung initialer Sedimentumverteilung in einem künstlichen Einzugsgebiet T2 - Böden verstehen, Böden nutzen, Böden fit machen, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, 3. - 9. September 2011 Y1 - 2011 UR - http://eprints.dbges.de/546 ER - TY - CHAP A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Gerke, Horst H. ED - Elmer, Michael ED - Schaaf, Wolfgang ED - Biemelt, Detlef ED - Gerwin, Werner ED - Hüttl, Reinhard F. T1 - Aspects of initial surface development T2 - The artificial catchment Chicken Creek - initial ecosystem development 2005-2010 Y1 - 2011 SP - 11 EP - 32 PB - FZLB CY - Cottbus ER - TY - CHAP A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Gerke, Horst H. T1 - 3D sediment mass balance of an artificially-created catchment using multi-temporal digital elevation data and GOCAD T2 - EGU General Assembly 2010, held in Vienna, Austria, 02 – 07 May 2010 Y1 - 2010 N1 - EGU2010-2621-2 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Hofer, Markus A1 - Lehmann, Peter A1 - Schneider, Anna A1 - Maurer, Thomas A1 - Stähli, Manfred A1 - Krafczyk, Manfred T1 - Modelling the emergence of surface erosion rills in an artificial catchment T2 - EGU General Assembly 2010, held in Vienna, Austria, 02 – 07 May 2010 Y1 - 2010 N1 - EGU2010-2498 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. T1 - Ein 3D Modell zur Darstellung der Initialstruktur eines künstlichen Einzusgebiets T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, Böden - eine endliche Ressource, 5. - 13. September 2009 Bonn, Exkursionsführer Y1 - 2010 PB - Dt. Bodenkundliche Gesellschaft CY - Oldenbourg ER - TY - CHAP A1 - Maurer, Thomas A1 - Schneider, Anna A1 - Buczko, Uwe A1 - Gerke, Horst H. T1 - Generating the 3D internal sediment structure of an artificial catchment T2 - EGU General Assembly 2010, held in Vienna, Austria, 02 – 07 May 2010 Y1 - 2010 N1 - EGU2010-2656 PB - European Geophysical Society CY - Katlenburg-Lindau ER -