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4 results for “glacier terminus position”
Width-averaged terminus position of Helheim Glacier, 2002-2019
<p>Terminus position of Helheim Glacier (2002-2019) in terms of a width-averaged distance [km] from an upstream flux gate. Positions are identified from satellite imagery---primarily Moderate Imaging Spectroradiometer (MODIS) imagery, but incorporating Landsat and Sentinel-2 imagery when available. Terminus positions are derived manually until 2010 (Schild & Hamilton, 2013) and using a semi-automated technique thereafter (Foga, Stearns & van der Veen, 2014). </p>
Alaska Tidewater Glacier Terminus Positions, Version 1
This data set contains Alaska tidewater glacier terminus positions digitized from USGS topographic maps and Landsat images.
MEaSUREs Annual Greenland Outlet Glacier Terminus Positions from SAR Mosaics V002
This data set, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) program, consists of annual, digitized (polyline) ice front positions for 239 outlet glaciers in Greenland. Ice front positions are derived from Sentinel-1A, Sentinel-1B, and RADARSAT-1 synthetic aperture radar (SAR) mosaics, plus imagery from Landsat 1 through Landsat 5 and Landsat 7 and Landsat 8. Although temporal coverage varies by glacier, data are available for the winter seasons 1972–1973 through 2020–2021. Data are provided as shapefiles. See <a href="http://nsidc.org/data/measures/gimp">Greenland Ice Mapping Project (GrIMP)</a> for related data.
MEaSUREs Weekly to Monthly Greenland Outlet Glacier Terminus Positions from Sentinel-1 Mosaics V001
This data set consists of sub-seasonal, digitized (polyline) ice front positions for 219 outlet glaciers in Greenland. For 199 glaciers, ice front positions are digitized at a monthly resolution. For 20 glaciers in northwestern Greenland, ice front positions are digitized at a 6-12 day resolution, depending on the availability of satellite imagery. Ice front positions are derived from Sentinel-1A and Sentinel-1B synthetic aperture radar (SAR) mosaics.
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