Thermo-erosional valleys and streams in ice-rich permafrost lowlands from Landsat, 2000, Hexagon, 1975, Cape Mamontov Klyk, Laptev and East Siberian Sea Region (RU)

Morgenstern, Anne; Grosse, Guido; Arcos, David Rico; Günther, Frank; Overduin, Pier Paul; Grigoriev, Mikhail N; Ulrich, Mathias; Spröte, Roland; Sandakov, Alexander

The published dataset provides an inventory of thermo-erosional landforms and streams in three lowland areas underlain by ice-rich permafrost of the Yedoma-type Ice Complex at the Siberian Laptev Sea coast. It consists of two shapefiles per study region: one shapefile for the digitized thermo-erosional landforms and streams, one for the study area extent. Thermo-erosional landforms were manually digitized from topographic maps and satellite data as line features and subsequently analyzed in a Geographic Information System (GIS) using ArcGIS 10.0. The mapping included in particular thermo-erosional gullies and valleys as well as streams and rivers, since development of all of these features potentially involved thermo-erosional processes.

For the Cape Mamontov Klyk site, data from Grosse et al. [2006], which had been digitized from 1:100000 topographic map sheets, were clipped to the Ice Complex extent of Cape Mamontov Klyk, which excludes the hill range in the southwest with outcropping bedrock and rocky slope debris, coastal barrens, and a large sandy floodplain area in the southeast. The mapped features (streams, intermittent streams) were then visually compared with panchromatic Landsat-7 ETM+ satellite data (4 August 2000, 15 m spatial resolution) and panchromatic Hexagon data (14 July 1975, 10 m spatial resolution). Smaller valleys and gullies not captured in the maps were subsequently digitized from the satellite data. The criterion for the mapping of linear features as thermo-erosional valleys and gullies was their clear incision into the surface with visible slopes.

This data set is part of a thematic data collection.

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Contact

Morgenstern, Anne

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Data and Resources

Additional Info

Field Value
Identifier DOI:10.1594/PANGAEA.833958
Project(s)
Institute AWI Alfred-Wegener-Institute Helmholtz-Centre for Polar- and Marine Research
Source https://doi.pangaea.de/10.1594/PANGAEA.833958
Publication Date 2014-07-11
Version 1.0
Product group
Product Thermo-erosional valleys and streams
Sensor Landsat-7 ETM+, Hexagon
Files
  • streams
  • study areas (ice complexes)
Variables [Units]
  • name of ice complex [name]
Region Laptev and East Siberian Sea Region
Spatial Reference EPSG:28420 Pulkovo 1942 / Gauss-Kruger zone 20
Spatial Resolution 10 m - 15 m
Spatial Coverage Latitude 73.33 to 73.67, Longitude 116.00 to 118.75
Temporal Coverage 2000-08-04, 1975-07-14
Temporal Resolution
Format Shapefile
Related to Grosse, Guido; Schirrmeister, Lutz; Malthus, Timothy J M (2006): Application of Landsat-7 satellite data and a DEM for the quantification of thermokarst-affected terrain types in the periglacial Lena–Anabar coastal lowland. Polar Research, 25(1), 51-67, https://doi.org/10.1111/j.1751-8369.2006.tb00150.x

Dataset extent

Map data © OpenStreetMap contributors