Lacroix Pascal auteur aut IRD Belart J. M. C. auteur aut IRD Berthier E. auteur aut IRD Saemundsson T. auteur aut IRD Jonsdottir K. auteur aut IRD text journalArticle eng text/pdf reformatted digital access The massive worldwide deglaciation leads to more frequent slope instabilities in mountainous terrains. The physical processes leading to such destabilizations are poorly constrained due to little monitoring of dynamic parameters at the local scale. Here we study a very large slow-moving landslide (similar to 0.8 km(2)), on the flank of Tungnakvislarjokull glacier in Iceland. Based on a combination of remote sensing images, we monitor the landslide and glacier kinematics over 75 years, with a focus over the period 1999-2019 when rapid glacier wastage has been observed. The landslide accelerates from 2 to 45 m/yr in the 6 years following a sudden increase in glacier mass loss. This acceleration coincides with intense quake activity (Ml < 2.8), recorded by a regional seismic network. We show that this seismicity is caused by the landslide sliding on a rough surface. The evolution of the quake magnitudes suggests a progressive segmentation of the landslide mass during its acceleration. specialized landslide glacier-retreat remote-sensing kinematics seismology asperity ISLANDE 062 064 066 126 49 14 e2022GL098302 [11 ] 2022 0094-8276 https://www.documentation.ird.fr/hor/fdi:010085868 10.1029/2022gl098302 0094-8276 [F B010085868] https://www.documentation.ird.fr/hor/fdi:010085868 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2022-09/010085868.pdf IRD - Base Horizon / Pleins textes 2022-09-28 2025-02-24 fdi:010085868 fre