Recent Acceleration of the Ádjet Rock Glacier, Norway, Documented by 62 Years of Remote Sensing Observations

The contained data are a part of a manuscript entitled “Recent Acceleration of the Ádjet Rock Glacier, Norway, Documented by 62 Years of Remote Sensing Observations” by Harald Øverli Eriksen, Tom Rune Lauknes, Line Rouyet, Ivar Berthling, Ketil Isaksen, Heidi Hindberg, Yngvar Larsen and Geoffrey D. Corner, submitted to the journal Geophysical Research Letters.

Adjet_Rock_Glacier_Data.zip includes several zip-files:

Area_Used_for_Comparison.zip containing a shapefile of area used for comparison of mean yearly velocity from offset-tracking data, TRI data and orthophoto comparison.

Deformation_Data_extracted_from_Profile_AA_Fig2_Fig3.zip containing deformation data extracted from profile A–A’:

- 2D_Vectors_velocity_(length)_and_plunge_from_TSX_OT.csv containing 2D vector velocity and plunge of displacement from combined offset-tracking data from both TerraSAR-X ascending and descending geometries (2009–2014). Data are extracted using a 40 m buffer along profile A–A’.

- Deformation_Data_Clipped_from_Profile_AA.xlsx contains projections and calculations of velocity, strain rate, subsidence and uplift data used in Fig. 2 and Fig. 3.

- Extracted_Dem_and_Slope_Along_Profile_AA_10m_buffer.csv contains height and slope extracted from profile A–A’.

Deformation_Reference_Area.zip includes the area used to reference InSAR and TRI displacement data.

Displacement_From_Orthophotos.zip with shapefiles giving displacement made by comparing position of boulders identified in orthophotos (1954–1977, 1977–2006 and 2006–2014).

ERS_Tandem_19950723-19950722_2x8_mean_velocity.zip with a raster dataset of ERS-1/2 tandem interferogram from 22 to 23 July 1995 produced using a multilooking of 2 looks in range and 8 looks in azimuth, providing a ground resolution of ~40 x 30 m.

Front_and_Scree_Apron_From_Orthophotos.zip with shapefiles of rock glacier fronts (1954, 1977, 2006, and 2014) and out limit of scree aprons (2006 and 2014) interpreted from orthophotos.

Instrumentation_and_Meteorological_Data.zip with shapefiles of position of camera used to create time-lapse movie, loggers measuring air temperatures and loggers measuring temperatures in fractures and pore space in the rock glacier. The zip-file also contains excel-files with in-situ measurement of air temperatures, temperatures from pore spaces and modelled gridded climatic data (daily air temperature, daily precipitation and snow depth).

Profile_Line_AA.zip with the shapefile giving the extent of profile line A–A’

Surface_Deformation_From_Glens_Flow_Law.zip containing an Excel-sheet with calculation of surface creep using Glen’s flow law.

Terrestrial_Radar_Interferometry.zip with raster datasets of accumulated displacement (TRI_deformation), calculated mean yearly displacement based on campaigns (TRI_mean_yearly_vel), and mean coherence for the 2014 and 2015 campaigns.

TSX_InSAR_Desc_Orbit.zip with a raster dataset based on 75 TerraSAR-X StripMap snow-free scenes from descending geometry, 49 multilooked interferograms with a temporal baseline of 11 days were computed. A spatial multilooking of 4 looks in range and 3 looks in azimuth provides a ground resolution of ~6 x 6 m. Stratified atmosphere was removed using a phase delay elevation profile for each interferogram before phase unwrapping was performed.

TSX_OT_Descending_Orbit_Proj_Into_Horiz_Plan_(m_per_year).zip with raster datasets giving the displacement of the rock glacier projected into the horizontal plane using offset-tracking data from TerraSAR-X scenes acquired in descending orbit. Based on scenes from the snow free seasons mean yearly displacements in meters are given (Offs_total_vector_lenght) for the years 2009, 2010, 2011, 2012, 2013, 2014 and 2016, and the total timespan 2009–2016. Datasets for the azimuth direction in degrees (Offs_tot_azimuth), north component (Offs_north) and west-east component (Offs_horiz), both in meter per year, of the displacement are also included.