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(Article of periodic en Anglais - 2014)

Document title

Moderate seismic activity affects contemporary sediment yields

Authors(s) and Affiliation(s)

VANMAERCKE M. (1) ; KETTNER A.J. (2) ; VAN DEN EECKHAUT M. (3) ; POESEN J. (4) ; MAMALIGA A. (4) ; VERSTRAETEN G. (4) ; RÃDOANE M. (5) ; OBREJA F. (5) ; UPTON P. (6) ; SYVITSKI J.P.M. (2) ; GOVERS G. (4) ;
(1) Katholieke Universiteit; Research Foundation Flanders (FWO), Leuven, BELGIQUE
(2) INSTAAR, Univ. of Colorado, ETATS-UNIS
(3) Climate Risk Management Unit, Inst. for Environment and Sustainability Joint Research Centre (IRC), Ispra, ITALIE
(4) Katholieke Universiteit, Leuven, BELGIQUE
(5) Univ., Suceava, ROUMANIE
(6) GNS Science, NOUVELLE-ZELANDE

Abstract

The AA. analyse the relation between sediment yield (SY) and seismic activity, a component of tectonic processes. Results show a spatial correlation between SY and seismic activity expressed as the estimated peak ground acceleration (PGA) with a 10% exceedance probability in 50 years. PGA has a significant impact on the spatial variation of SY, even after correcting for cross-correlations with topography, lithology or other factors that may influence SY. Based on 3 distinct data sets, the AA. demonstrate that this effect is significant both for small catchments in Europe and for large river systems worldwide and that seismic activity may be even more important for explaining regional variation in SY than land use or many other commonly considered factors (e.g. catchment area, climate). It is shown that explicitly considering seismic activity may lead to SY-estimates that easily deviate a factor 2 or more compared to estimates that do not consider seismic activity

Source

Article of periodic

published at : Progress in physical geography / ISSN 0309-1333 / CODEN PPGEEC

Editor : Sage Publications, London - ROYAUME-UNI (1977)

Millesime : 2014, vol. 38, no2 [pp. 145-172]

Bibliographic references : 6 p.

Collation : 11 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 14648 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1177/0309133313516160

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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