Mechanism of landslide induced by glacier-retreat on the Tungnakvíslarjökull area, Iceland

• Main Authors: Lacroix, Pascal, Belart, Joaquín M.C., Berthier, Etienne, Sæmundsson, Þorsteinn, Jónsdóttir, Kristín
• Format: Dataset
• Language: English
• Published: 2022
• Subjects: Slope instability; Remote Sensing; Iceland; Tungnakvíslarjökull; Lacroix; Mýrdalsjökull; glacier
• Online Access: https://zenodo.org/record/6397629; https://doi.org/10.5281/zenodo.6397629

Introduction This repository contains the data used for the study of the slope instability of Tungnakvíslarjökull, Iceland, described in Lacroix et al. (submitted). Specifically, the repository contains three time series in Tungnakvíslarjökull: Time series of Digital Elevation Models (DEMs) from ASTER, 2000-2020. Time series of horizontal ground displacements, 1999-2019. Time series of earthquakes, 1995-2019. Finally, we provide the map of the rate of elevation difference and the map of horizontal ground displacements for the whole period 2000-2019, as shown in Figure 1 of Lacroix et al. (submitted). The data and methods used for the elaboration of this data repository are described in detail in Lacroix et al. (submitted). In this repository we also provide a short summary and overview of the data and methods used. Data A total of 160 ASTER scenes were used to produce the time series of DEMs. A series of images from SPOT1, Landsat-7, ASTER and Landsat-8 was used in order to produce the horizontal ground displacements maps. The South-Iceland Lowlands (SIL) network (Jóndsdóttir et al., 2007) was obtained from Veðurstofan Íslands (www.vedur.is). Table 1 provides an overview of these data. Table1: Data used for the creation of this repository Application Platforms Acquisition dates DEM ASTER 160 scenes from 2000-10-16 to 2020-08-27. Format for the date is YYYYMMDD Horizontal ground displacement SPOT1 1987-08-05 Landsat-7 1999-07-26, 2000-08-20, 2001-09-24, 2002-07-09 ASTER 2003-08-04, 2004-09-18, 2007-08-15, 2011-08-10, 2013-07-24, 2014-08-18, 2016-08-07 Landsat-8 2014-08-12, 2015-09-16, 2016-08-24, 2017-08-20, 2018-09-14, 2019-08-10 Seismicity SIL network 370491 events recorded between 1995-2019 in the Mýrdalsjökull (S-Iceland) area and surroundings Methods The DEMs were created using the Ames StereoPipeline (ASP, Shean et al., 2016) with the same setup as used in Brun et al., (2017). Each DEM was then co-registered to a lidar DEM acquired in 2010 (Jóhannesson et al., 2013), using the co-registration methods from ...