Hoffmann Thomas

Sedimenttransport durch Muren in natürlichen alpinen Systemen
Sediment transport in mountain geosystems


Project Number: CH-4814
Project Type: Master
Project Duration: 06/01/2012 - 12/31/2014 project completed
Funding Source: other ,
Project Leader: Dr. Thomas Hoffmann
Geomorphological & Environmental Research Unit
Dept. of Geography
University of Bonn
Meckenheimer Allee 166
DE-53115 Bonn
Germany
Phone: +49 (0)228 737 507
FAX: +49 (0)228 739 099
e-Mail: thomas.hoffmann(at)uni-bonn.de
http://gidimap.giub.uni-bonn.de:8080/persons/hoffmann
Metadata: https://www.parcs.ch/snp/mmd_fullentry.php?docu_id=10344

related to this project.
for which the project has a relevance.


Research Areas:
Landscape

Disciplines:
earth sciences
geochronology

Keywords:
sediment flux, alpine geosystems, debris flows

Abstract:
Sediment transport in high mountains is generally conditioned by steep topographic gradients that favor the mobilization, erosion, transport, and deposition of sediments by debris flows. Our understanding of the sediment flux and the spatial organization of geomorphic processes that feed debris flows and remobilize debris flow deposits is yet very limited. Thus the objectives of the proposed research are i) to explore the spatial organization of process domains in high mountains that are dominantly conditioned by debris flows, ii) to identify and quantify their sediment sources and sinks, iii) to evaluate the transport and erosion conditions along debris flow tracks.

Therefore, we intend to map geomorphic process domains and to establish Postglacial and recent sediment budgets in high mountain catchments in the European Alps that are characterized by limited human impact. Non-destructive geophysical methods will be applied to establish erosion rates based on sediment volumes in different headwater catchments. The analysis will be complemented by the geomorphometrical analysis of digital elevation models.

Leading questions:
How do debris flows control sediment flux from hillslopes to channels?
How do debris flow impact channel morphology and grain size?
What is the impact of debris flows on long-term landform evolution?

Publications:
Messenzehl K (2013): Alpine sediment cascades in the Swiss National Park, Graubuenden, Master Thesis, University of Bonn.
pdf Masterthesis


Last update: 3/29/18
Source of data: ProClim- Research InfoSystem (1993-2020)
Update the data of project: CH-4814

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