Hornsund area extracted from different archive data. Detailed description of the source data and accuracy data for glaciers from hydrological basin of Hornsund can be found in: Błaszczyk M., Jania J.A., Kolondra L., 2013: Fluctuations of tidewater glaciers in Hornsund Fiord (Southern Svalbard) since the beginning of the 20th century. Polish Polar Research, 34( 4): 327-352. http://journals.pan.pl/dlibra/publication/114504/edition/99557/content

High resolution orthophoto images from Geoeye, WorldView-2 and Pléaides processed in OrthoEngine module of PCI Geomatica. Data format: grid, UTM 33X / EGM 2008. Spatial resolution: 0.5 m (panchromatic and pansharpened) and 2 m (multispectral).

Dataset contains evolution of the snow temperature within seasonal snowpack on Hansbreen. Fieldwork has been performed with several thermistors located at different levels (from snow surface to the bottom, on glacier ice) from April to July 2010 (during period of early and intensive surface melting). Study has been repeated in 2015, at the same location. Acknowledgements: Research Council of Norway, Arctic Field Grant 2013: Spatial distribution of snow cover and drainage systems on the glaciers on Wedel Jarlsberg Land (RiS ID: 6158); the National Science Centre PRELUDIUM 4: Role of meltwater from snow cover for supplying drainage systems of the Spitsbergen glaciers (2012/07/N/ST10/03784) References: Laska M., Luks B., Budzik T., 2016. Influence of snowpack internal structure on snow metamorphism and melting intensity on Hansbreen, Svalbard. Polish Polar Research, 37(2): 193–218. doi:10.1515/popore-2016-0012

Inventory of tidewater and landbased glaciers delineated from archival satellite images (ASTER, Landsat) for Southern Spitsbergen. Tidewater glaciers are delineated based on satellite data from 2010. Landbased glacier are extracted from different satellite data (2005-2010). Shapefiles have basic information in the attribute table (name, ID, area, type of glaciers). Detailed description of the source data and accuracy data for glaciers from hydrological basin of Hornsund can be found in: Błaszczyk M., Jania J.A., Kolondra L., 2013: Fluctuations of tidewater glaciers in Hornsund Fiord (Southern Svalbard) since the beginning of the 20th century. Polish Polar Research, 34( 4): 327-352.http://journals.pan.pl/dlibra/publication/114504/edition/99557/content

Dataset contains results of GPR survey performed with 800 MHz antennas for snow depth calculation. Fieldwork has been done during peak of accumulation, along repeated profiles on several glaciers in the region of Hornsund, Svalbard: Amundsenisen (2013) Werenskioldbreen (2013, 2014, 2015) Nannbreen (2013) Ariebreen (2014) Flatbreen (2018) Storbreen (2018) Acknowledgements: Research Council of Norway, Arctic Field Grant 2013: Spatial distribution of snow cover and drainage systems on the glaciers on Wedel Jarlsberg Land (RiS ID: 6158); the National Science Centre PRELUDIUM 4: Role of meltwater from snow cover for supplying drainage systems of the Spitsbergen glaciers (2012/07/N/ST10/03784); References: LASKA M.,GRABIEC M.,IGNATIUK D.,BUDZIK T.,2017. Snow deposition patterns on southern Spitsbergen glaciers, Svalbard, in relation to recent meteorological conditions and local topography. Geografiska Annaler, Series A: Physical Geography, 99(3): 262–287. doi:10.1080/04353676.2017.1327321

The files in this daaset include: (1) AEV_FGPR.txt - time series of normalised absolute extreme values (AEV) calculated from the 21 traces of the GPR profiles, determined in accordance with the procedure described in Grabiec:'Field and Simulated Ground Penetrating Radar (GPR) Data for Improved Snow Structure Analysis on Arctic Glacier'section 3.3. Input GPR signal amplitude sequences equal to 50 ns were analysed for the moment of the first significant waveform amplitude drift from values close to 0, which was given the value TWTT=0 ns. This moment was individual for each profile. The elimination of the pre-existing data resulted in the strings being shorter than the originals and of different lengths. In the case of the GPR profiles 2011_hansIIItest4 and 2011_hans3test5, they were taken at TW<50 ns and their length was not changed. Values are given as averages for segments equal to 1 ns. Hence, e.g. 1 AEV related to TWTT=1 means AEV_FGPR values averaged over the range 1 - 1.999 ns. AEV values for the range 0 - 1 ns have been omitted from the series, as in most cases no local maximum of the signal amplitude value has been recorded in this range. (2) AEV_SGPR.txt - time series of normalised absolute extreme values (AEV) calculated from the synthetic signal obtained in the gprMAX software and further processed according to the procedure described in the Grabiec:'Field and Simulated Ground Penetrating Radar (GPR) Data for Improved Snow Structure Analysis on Arctic Glacier'section 3.3. For consistency of the time series, the TWTT length of AEV_SGPR was adjusted to that of AEV_FGPR. Values are given as averages for segments equal to 1 ns. Hence, e.g. 1 AEV related to TWTT=1 means AEV_SGPR values averaged over the range 1 - 1.999 ns. AEV values for the range 0 - 1 ns have been omitted from the series, as in most cases no local maximum of the signal amplitude value has been recorded in this range.

The data contains excerpts from GPR profiles located near snowpits performed on Hansbreen during the spring seasons of 2008, 2011, 2016, 2018, and 2019. (see Grabiec: ‘Synthetic and Actual GPR Data for Improved Snow Structure Analysis on Arctic Glacier’, Fig.1., Tab.1). The GPR profiles consist of 21 traces pre-trimmed to a time window TW=50 ns (TWTT). Profiles 2011_hansIIItest4 and 2011_hansIIItest5 were not pruned due to the original TW<50 ns. The files presented in the collection have not been further processed. A single GPR profile consists of a set of files with the same name and extension: .rad, .rd3, .utm (UTM coordinates), .rep, rad.vm (Mala Geoscience format)

TBD

Glacier velocities are derived from the displacements of stakes installed close to the front of Hansbreen. Measurements of stakes position were conducted in 2008-2009, 2010-2011, 2013-2014 and 2015, with precise dGPS receiver (Leica 1230, accuracy ±5cm) and with time intervals from 3 hours to a few days.

Radar satellite (SAR) images for Hornsund: ERS-1, ERS-2, ENVISAT, ALOS Palsar, TerraSAR-X, TandemX-1, acquired between 1992 and 2014. 210 archival SAR data were provided at the SLC level, so that both radiometric and geometric corrections were applied using the same methods, and with the same digital elevation model (2008 DEM SPOT developed by the IPY-SPIRIT Project; Korona et al., 2009). The SAR data were processed in BEAM (http://www.brockmann-consult.de/cms/web/beam).