Methods for the Quantitative Assessment of Channel Processes in Torrents (Steep Streams)

Methods for the Quantitative Assessment of Channel Processes in Torrents (Steep Streams)

by Dieter Rickenmann


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Product Details

ISBN-13: 9781138029613
Publisher: Taylor & Francis
Publication date: 04/04/2016
Series: IAHR Monographs Series
Pages: 152
Product dimensions: 6.80(w) x 9.80(h) x 0.50(d)

About the Author

Dieter Rickenmann is a senior research scientist at the Swiss Federal Research Institute WSL, Birmensdorf, Switzerland. He has a degree as Civil Engineer from ETH Zürich in Switzerland and a PhD degree from ETH Zürich. In 2002 he was appointed Professor for Alpine Natural Hazards at the University of Natural Resources and Applied Life Sciences (BOKU) in Vienna, Austria. Since 2007 he is back at the Swiss Federal Research Institute WSL, focusing mainly on sediment transport processes and debris flows in steep headwater catchments.

Table of Contents

1 Introduction
1.1 Torrent processes and hazard assessment
1.2 On the contents of the present publication
2 Flow resistance in gravel-bedded streams and torrents
2.1 Logarithmic flow law
2.2 Empirical flow resistance laws (power laws)
2.3 Variable power law
2.4 Partitioning of the flow resistance
3 Fluvial bedload transport
3.1 Characterization of torrents and mountain rivers
3.2 Sedimentological parameters
3.3 Determination of grain size distribution and of characteristic grain sizes
3.4 Bedload transport in steep channels
3.5 Driftwood in torrents and mountain rivers
3.6 Critical channel cross-sections and potential deposition
3.7 Numerical simulation models
4 Debris flows
4.1 Properties of debris flows
4.2 Important elements of the process and hazard assessment
4.3 Occurrence of debris flows
4.4 Empirical approaches to characterize the flow and deposition behavior
4.5 Models for the simulation of debris flows
4.6 Scenarios and deposition in the area of the fan
4.7 Final remarks
5 Magnitude and frequency of torrent events
5.1 Empirical approaches to estimate the magnitude of an event
5.2 Field-based estimate of the event magnitude
5.3 Combined method for estimating the event magnitude
5.4 Flood runoff and debris-flow occurrence
5.5 Frequency of torrent events
5.6 General remarks on the estimate of sediment loads in torrent catchments
6 General remarks on hazard assessment of channel processes in torrents
6.1 Reproducibility of the process analysis and hazard assessment
6.2 Procedure of hazard assessment and important aspects

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