Universität zu Köln

Gabarrou, Sylvain, Le Cozannet, Goneri, Parteli, Eric J. R., Pedreros, Rodrigo, Guerber, Etienne, Millescamps, Bastien, Mallet, Cyril and Oliveros, Carlos (2018). Modelling the Retreat of a Coastal Dune under Changing Winds. J. Coast. Res.. S. 166 - 171. COCONUT CREEK: COASTAL EDUCATION & RESEARCH FOUNDATION. ISSN 1551-5036

Full text not available from this repository.

Abstract

Coastal dunes can move in response to winds and cause serious hazard to human assets. Changes in wind patterns, potentially occurring as a consequence of climate change or variability, could affect rates of aeolian transport and migration velocity of coastal dunes. However, most of previous modeling studies were conducted assuming that aeolian bedforms are subject to constant wind velocities. This article presents a modeling of the mobility of the Dune du Pilat in Aquitaine, a coastal transverse dune exposed to winds of varying intensity. It applies well-established models and empirical formula for aeolian dune migration, including a model previously validated against measurements of real profiles of desert and coastal dunes. The average migration velocity of Pilat dune predicted by the models is about 3m/year, which is in good agreement with in-situ measurements. To test the response of transverse dune mobility to changing winds, virtual wind time series are generated using a stochastic model. Modelling experiments suggest that more frequent storms have less impacts than more intense winds. Due to the size of the Pilat Dune (altitude of about 100m), these result in moderate changes in the average dune velocity. This study shows that the approach of combining a stochastic model for winds with a morphodynamic dune model can provide valuable insight into how aeolian bedforms respond to changes in flow conditions potentially caused by climate change.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Gabarrou, Sylvain UNSPECIFIED UNSPECIFIED UNSPECIFIED Le Cozannet, Goneri UNSPECIFIED UNSPECIFIED UNSPECIFIED Parteli, Eric J. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pedreros, Rodrigo UNSPECIFIED UNSPECIFIED UNSPECIFIED Guerber, Etienne UNSPECIFIED UNSPECIFIED UNSPECIFIED Millescamps, Bastien UNSPECIFIED UNSPECIFIED UNSPECIFIED Mallet, Cyril UNSPECIFIED UNSPECIFIED UNSPECIFIED Oliveros, Carlos UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-187350
DOI:	10.2112/SI85-034.1
Journal or Publication Title:	J. Coast. Res.
Page Range:	S. 166 - 171
Date:	2018
Publisher:	COASTAL EDUCATION & RESEARCH FOUNDATION
Place of Publication:	COCONUT CREEK
ISSN:	1551-5036
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TIME-SERIES; SAND DUNES Multiple languages Environmental Sciences; Geography, Physical; Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18735