Lacroix Pascal auteur aut IRD Perfettini Hugo auteur aut IRD Taipe E. auteur aut IRD Guillier Bertrand auteur aut IRD text journalArticle eng text/pdf born digital access We document the first time series of a landslide reactivation by an earthquake using continuous GPS measurements over the Maca landslide (Peru). Our survey shows a coseismic response of the landslide of about 2 cm, followed by a relaxation period of 5 weeks during which postseismic slip is 3 times greater than the coseismic displacement itself. Our results confirm the coseismic activation of landslides and provide the first observation of a postseismic displacement. These observations are consistent with a mechanical model where slip on the landslide basal interface is governed by rate and state friction, analogous to the mechanics of creeping tectonic faults, opening new perspectives to study the mechanics of landslides and active faults. specialized SEISME GLISSEMENT DE TERRAIN TELEDETECTION SPATIALE FAILLE PLUIE MODELISATION GPS.SYSTEME DE POSITIONNEMENT GLOBAL PEROU ANDES 066SISMO 41 9 6676–6680 2014 1944-8007 https://www.documentation.ird.fr/hor/fdi:010063228 10.1002/2014GL061170 1944-8007 [F B010063228] https://www.documentation.ird.fr/hor/fdi:010063228 https://www.documentation.ird.fr/intranet/publi/depot/2014-11-26/010063228.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-11-25 2015-04-23 fdi:010063228 fre