Modelling woody material transport and deposition in alpine rivers

Mazzorana, B.; Hübl, J.; Zischg, Andreas Paul; Largiader, A. (2011). Modelling woody material transport and deposition in alpine rivers. Natural Hazards, 56(2), pp. 425-449. Springer 10.1007/s11069-009-9492-y

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Recent flood events in Switzerland and Western Austria in 2005 were characterised by an increase in impacts and associated losses due to the transport of woody material. As a consequence, protection measures and bridges suffered considerable damages. Furthermore, cross-sectional obstructions due to woody material entrapment caused unexpected flood plain inundations resulting in severe damage to elements at risk. Until now, the transport of woody material is neither sufficiently taken into account nor systematically considered, leading to prediction inaccuracies during the procedure of hazard mapping. To close this gap, we propose a modelling approach that (1) allows the estimation of woody material recruitment from wood-covered banks and flood plains; (2) allows the evaluation of the disposition for woody material entrainment and transport to selected critical configurations along the stream and that (3) enables the delineation of hazard process patterns at these critical configurations. Results from a case study suggest the general applicability of the concept. This contribution to woody material transport analysis refines flood hazard assessments due to the consideration of woody material transport scenarios.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography
06 Faculty of Humanities > Other Institutions > Walter Benjamin Kolleg (WBKolleg) > Center for Global Studies (CGS)

UniBE Contributor:

Zischg, Andreas Paul

Subjects:

500 Science > 550 Earth sciences & geology
900 History > 910 Geography & travel
500 Science

ISSN:

0921-030X

Publisher:

Springer

Language:

English

Submitter:

Mirjam Stawicki

Date Deposited:

01 Sep 2015 10:40

Last Modified:

06 Feb 2018 16:23

Publisher DOI:

10.1007/s11069-009-9492-y

BORIS DOI:

10.7892/boris.71339

URI:

https://boris.unibe.ch/id/eprint/71339

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