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(Article of periodic en Anglais - 2014)

Document title

Impacts of post-glacial rebound on landslide spatial distribution at a regional scale in northern Iceland (Skagafjörður)

Authors(s) and Affiliation(s)

COSSART E. (1) ; MERCIER D. (2) ; DECAULNE A. (2) ; FEUILLET T. (2) ; PÁLL JÓNSSON H. (3) ; SÆMUNDSSON Þ. (3) ;
(1) UMR 8586 Prodig, CNRS, Univ. Paris 1 Panthéon-Sorbonne, Paris, FRANCE
(2) Géolittomer, Univ., Nantes, FRANCE
(3) Náttúrustofa Norðurlands Vestra, Geoscience, Sauðárkrókur, ISLANDE

Abstract

The AA. examine Skagafjörður area. They compare the role of para-glaciation (debuttressing, influence of post-glacial rebound) with that of classic factors (topography, lithology, etc.) in landslide occurrence and location, using a spatial analysis based on a chi-square test. On the one hand, the results highlight that landslides are over-represented in areas where post-glacial rebound was at its maximum, with a stronger concentration of landslides in the northern part of the fjord. On the other hand, the distribution of landslides did not show any clear relationship with the pattern of glacial debuttressing. Tschuprow coefficient highlights that the influence of post-glacial rebound on landslide location is higher than the combined influence of slope gradient, curvature or geological structure. This result is supported by the initial evidence for the timing of landslides in the area : most landslides occurred during the first half of the Holocene, and a period of hillslope instability was initiated when the post-glacial uplift was at its maximum. Finally, the mechanisms that link post-glacial rebound and landsliding as well as the geomorphic impacts of landslides, are discussed

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2014, vol. 39, no3 [pp. 336-350]

Bibliographic references : 3 p.

Collation : 14 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3450

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28518629 : Permanent link - XML version
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