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A Structure Generator for Modelling the Initial Sediment Distribution of an Artificial Hydrologic Catchment : Volume 8, Issue 3 (09/05/2011)

By Maurer, T.

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Book Id: WPLBN0004012914
Format Type: PDF Article :
File Size: Pages 59
Reproduction Date: 2015

Title: A Structure Generator for Modelling the Initial Sediment Distribution of an Artificial Hydrologic Catchment : Volume 8, Issue 3 (09/05/2011)  
Author: Maurer, T.
Volume: Vol. 8, Issue 3
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Gerke, H. H., Schneider, A., & Maurer, T. (2011). A Structure Generator for Modelling the Initial Sediment Distribution of an Artificial Hydrologic Catchment : Volume 8, Issue 3 (09/05/2011). Retrieved from http://www.hawaiilibrary.net/


Description
Description: Research Centre Landscape Development and Mining Landscapes, Brandenburg University of Technology, Cottbus, Germany. Artificially-created hydrological catchments are characterized by sediment structures from technological construction processes that can potentially be important for modelling of flow and transport and for understanding initial soil and ecosystem development. The subsurface spatial structures of such catchments have not yet been sufficiently explored and described. Our objective was to develop a structure generator programme for modelling the 3-D spatial sediment distribution patterns depending on the technical earth-moving and deposition processes. For the development, the artificially-constructed hydrological catchment Chicken Creek located in Lower Lusatia, Germany, served as an example. The structure generator describes 3-D technological sediment distributions at two scales: (i) for a 2-D-vertical cross-section, texture and bulk density distributions are generated within individual spoil cones that result from mass dumping, particle segregation, and compaction and (ii) for the whole catchment area, the spoil cones are horizontally arranged along trajectories of mass dumping controlled by the belt stacker-machine relative to the catchment's clay layer topography. The generated 3-D texture and bulk density distributions are interpolated and visualized as a gridded 3-D-volume body using 3-D computer-aided design software. The generated subsurface sediment distribution for the Chicken Creek catchment was found to correspond to observed patterns although still without any calibration. Spatial aggregation and interpolation in the gridded volume body modified the generated distributions towards more uniform (unimodal) distributions and lower values of the standard deviations. After incorporating variations and pedotransfer approaches, generated sediment distributions can be used for deriving realizations of the 3-D hydraulic catchment structure.

Summary
A structure generator for modelling the initial sediment distribution of an artificial hydrologic catchment

Excerpt
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