Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp
Shallow lakes are common across the entire Arctic. They play an important role as methane sources and wildlife habitats, and they are also associated with thermokarst processes which are characteristic of permafrost environments. Many lakes freeze to the ground along their rims and often over the en...
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Online Access: | https://dx.doi.org/10.1594/pangaea.873674 https://doi.pangaea.de/10.1594/PANGAEA.873674 |
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ftdatacite:10.1594/pangaea.873674 2023-05-15T15:01:49+02:00 Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp Bartsch, Annett Pointner, Georg Leibman, Marina O Dvornikov, Yury Khomutov, Artem V Trofaier, Anna Maria 2017 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.873674 https://doi.pangaea.de/10.1594/PANGAEA.873674 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.3389/feart.2017.00012 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY File name File format File size Uniform resource locator/link to file Dataset dataset Supplementary Dataset 2017 ftdatacite https://doi.org/10.1594/pangaea.873674 https://doi.org/10.3389/feart.2017.00012 2022-02-09T13:38:16Z Shallow lakes are common across the entire Arctic. They play an important role as methane sources and wildlife habitats, and they are also associated with thermokarst processes which are characteristic of permafrost environments. Many lakes freeze to the ground along their rims and often over the entire extent during winter time. Knowledge on the spatial patterns of ground-fast and floating ice is important as it relates to methane release, talik formation and hydrological processes, but no circumpolar account of this phenomenon is currently available. Previous studies have shown that ground-fast ice can easily be detected using C-band Synthetic Aperture Radar (SAR) backscatter intensity data acquired from satellites. A major challenge is that backscatter intensity varies across the satellite scenes due to incidence angle effects. Circumpolar application therefore requires the inclusion of incidence angle dependencies into the detection algorithm. An approach using ENVISAT ASAR Wide Swath data (approximately 120 m spatial resolution) has therefore been developed supported by bathymetric measurements for lakes in Siberia. This approach was then further applied across the entire Arctic for late winter 2008. Analyses of lake depth measurements from several sites suggest that the used method yields the potential to utilize ground-fast lake ice information over larger areas with respect to landscape development, but results need to be treated with care, specifically for larger lakes and along river courses. Lakes like the Great Slave Lake, Great Bear Lake and lakes located in the proximity of the Putorana Plateau were excluded from the analyses. Dataset Arctic Great Bear Lake Great Slave Lake Ice permafrost Thermokarst Siberia DataCite Metadata Store (German National Library of Science and Technology) Arctic Great Slave Lake ENVELOPE(-114.001,-114.001,61.500,61.500) Talik ENVELOPE(146.601,146.601,59.667,59.667) Asar ENVELOPE(134.033,134.033,68.667,68.667) Great Bear Lake ENVELOPE(-120.753,-120.753,65.834,65.834) Fast Lake ENVELOPE(-108.251,-108.251,59.983,59.983) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
File name File format File size Uniform resource locator/link to file |
spellingShingle |
File name File format File size Uniform resource locator/link to file Bartsch, Annett Pointner, Georg Leibman, Marina O Dvornikov, Yury Khomutov, Artem V Trofaier, Anna Maria Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp |
topic_facet |
File name File format File size Uniform resource locator/link to file |
description |
Shallow lakes are common across the entire Arctic. They play an important role as methane sources and wildlife habitats, and they are also associated with thermokarst processes which are characteristic of permafrost environments. Many lakes freeze to the ground along their rims and often over the entire extent during winter time. Knowledge on the spatial patterns of ground-fast and floating ice is important as it relates to methane release, talik formation and hydrological processes, but no circumpolar account of this phenomenon is currently available. Previous studies have shown that ground-fast ice can easily be detected using C-band Synthetic Aperture Radar (SAR) backscatter intensity data acquired from satellites. A major challenge is that backscatter intensity varies across the satellite scenes due to incidence angle effects. Circumpolar application therefore requires the inclusion of incidence angle dependencies into the detection algorithm. An approach using ENVISAT ASAR Wide Swath data (approximately 120 m spatial resolution) has therefore been developed supported by bathymetric measurements for lakes in Siberia. This approach was then further applied across the entire Arctic for late winter 2008. Analyses of lake depth measurements from several sites suggest that the used method yields the potential to utilize ground-fast lake ice information over larger areas with respect to landscape development, but results need to be treated with care, specifically for larger lakes and along river courses. Lakes like the Great Slave Lake, Great Bear Lake and lakes located in the proximity of the Putorana Plateau were excluded from the analyses. |
format |
Dataset |
author |
Bartsch, Annett Pointner, Georg Leibman, Marina O Dvornikov, Yury Khomutov, Artem V Trofaier, Anna Maria |
author_facet |
Bartsch, Annett Pointner, Georg Leibman, Marina O Dvornikov, Yury Khomutov, Artem V Trofaier, Anna Maria |
author_sort |
Bartsch, Annett |
title |
Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp |
title_short |
Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp |
title_full |
Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp |
title_fullStr |
Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp |
title_full_unstemmed |
Circumpolar ground-fast lake ice fraction by lake from ENVISAT ASAR late winter 2008, links to Shapfiles, supplement to: Bartsch, Annett; Pointner, Georg; Leibman, Marina O; Dvornikov, Yury; Khomutov, Artem V; Trofaier, Anna Maria (2017): Circumpolar Mapping of Ground-Fast Lake Ice. Frontiers in Earth Science, 5(12), 16 pp |
title_sort |
circumpolar ground-fast lake ice fraction by lake from envisat asar late winter 2008, links to shapfiles, supplement to: bartsch, annett; pointner, georg; leibman, marina o; dvornikov, yury; khomutov, artem v; trofaier, anna maria (2017): circumpolar mapping of ground-fast lake ice. frontiers in earth science, 5(12), 16 pp |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2017 |
url |
https://dx.doi.org/10.1594/pangaea.873674 https://doi.pangaea.de/10.1594/PANGAEA.873674 |
long_lat |
ENVELOPE(-114.001,-114.001,61.500,61.500) ENVELOPE(146.601,146.601,59.667,59.667) ENVELOPE(134.033,134.033,68.667,68.667) ENVELOPE(-120.753,-120.753,65.834,65.834) ENVELOPE(-108.251,-108.251,59.983,59.983) |
geographic |
Arctic Great Slave Lake Talik Asar Great Bear Lake Fast Lake |
geographic_facet |
Arctic Great Slave Lake Talik Asar Great Bear Lake Fast Lake |
genre |
Arctic Great Bear Lake Great Slave Lake Ice permafrost Thermokarst Siberia |
genre_facet |
Arctic Great Bear Lake Great Slave Lake Ice permafrost Thermokarst Siberia |
op_relation |
https://dx.doi.org/10.3389/feart.2017.00012 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.873674 https://doi.org/10.3389/feart.2017.00012 |
_version_ |
1766333823169069056 |