Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska
This dataset contains spatially averaged estimates of ice content (volume percent) for two-dimensional cross-sectional profiles (from trough center to trough center to a depth of 3 meters) of low- and flat-centered ice-wedge polygons (three of each type) located near Utqiagvik, Alaska. A combination...
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ftosti:oai:osti.gov:1876898 2023-07-30T03:55:27+02:00 Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska Jastrow, Julie Matamala, Roser Ping, Chien-Lu Michaelson, Gary Vugteveen, Timothy Lederhouse, Jeremy 2023-04-10 application/pdf http://www.osti.gov/servlets/purl/1876898 https://www.osti.gov/biblio/1876898 https://doi.org/10.15485/1876898 unknown http://www.osti.gov/servlets/purl/1876898 https://www.osti.gov/biblio/1876898 https://doi.org/10.15485/1876898 doi:10.15485/1876898 54 ENVIRONMENTAL SCIENCES 2023 ftosti https://doi.org/10.15485/1876898 2023-07-11T10:13:36Z This dataset contains spatially averaged estimates of ice content (volume percent) for two-dimensional cross-sectional profiles (from trough center to trough center to a depth of 3 meters) of low- and flat-centered ice-wedge polygons (three of each type) located near Utqiagvik, Alaska. A combination of soil pits, trenches, and cores were used to describe, sample, and map the cross-section stratigraphy of soil horizons and ice wedges for each polygon at 6 depth intervals. Observed soil horizons were assigned to four types with increasing amounts of organic components (mineral, mineral/organic, organic/mineral, and organic). The average ice contents of each soil horizon type below the permafrost boundary and wedge ice were weighted by their cross-sectional area fractions to calculate spatially averaged estimates of ice content for each polygon. In the active layer, spatially averaged estimates of volumetric water contents were similarly determined and reported here as “ice” content to enable estimates of the soil’s structurally competent porosity and excess ice in permafrost layers. In this dataset, the file AK13_ice_contents.csv includes cross-sectional area fractions and spatially averaged ice contents for soil layers and horizon types at the six depth intervals. The file AK13_permafrost_ice_fractions.csv contains the calculated partitioning of ice contents into pore ice and excess ice fractions for the three permafrost-dominated depth intervals. In addition, there is a data dictionary file for each of these data files and a file-level metadata file. These data were generated by the Department of Energy’s Soil Carbon Response to Environmental Change Scientific Focus Area and were used as inputs to model simulations examining the consequences of thaw-affected subsidence and microtopography change on active layer thickness of low-relief polygonal tundra landscapes in a warming Arctic. Other/Unknown Material Active layer thickness Arctic Ice permafrost Tundra wedge* Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES |
spellingShingle |
54 ENVIRONMENTAL SCIENCES Jastrow, Julie Matamala, Roser Ping, Chien-Lu Michaelson, Gary Vugteveen, Timothy Lederhouse, Jeremy Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
This dataset contains spatially averaged estimates of ice content (volume percent) for two-dimensional cross-sectional profiles (from trough center to trough center to a depth of 3 meters) of low- and flat-centered ice-wedge polygons (three of each type) located near Utqiagvik, Alaska. A combination of soil pits, trenches, and cores were used to describe, sample, and map the cross-section stratigraphy of soil horizons and ice wedges for each polygon at 6 depth intervals. Observed soil horizons were assigned to four types with increasing amounts of organic components (mineral, mineral/organic, organic/mineral, and organic). The average ice contents of each soil horizon type below the permafrost boundary and wedge ice were weighted by their cross-sectional area fractions to calculate spatially averaged estimates of ice content for each polygon. In the active layer, spatially averaged estimates of volumetric water contents were similarly determined and reported here as “ice” content to enable estimates of the soil’s structurally competent porosity and excess ice in permafrost layers. In this dataset, the file AK13_ice_contents.csv includes cross-sectional area fractions and spatially averaged ice contents for soil layers and horizon types at the six depth intervals. The file AK13_permafrost_ice_fractions.csv contains the calculated partitioning of ice contents into pore ice and excess ice fractions for the three permafrost-dominated depth intervals. In addition, there is a data dictionary file for each of these data files and a file-level metadata file. These data were generated by the Department of Energy’s Soil Carbon Response to Environmental Change Scientific Focus Area and were used as inputs to model simulations examining the consequences of thaw-affected subsidence and microtopography change on active layer thickness of low-relief polygonal tundra landscapes in a warming Arctic. |
author |
Jastrow, Julie Matamala, Roser Ping, Chien-Lu Michaelson, Gary Vugteveen, Timothy Lederhouse, Jeremy |
author_facet |
Jastrow, Julie Matamala, Roser Ping, Chien-Lu Michaelson, Gary Vugteveen, Timothy Lederhouse, Jeremy |
author_sort |
Jastrow, Julie |
title |
Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska |
title_short |
Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska |
title_full |
Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska |
title_fullStr |
Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska |
title_full_unstemmed |
Spatially Averaged Ice Contents of Ice-Wedge Polygon Cross-Sections to 3-m Depth, July 2013, Utqiagvik, Alaska |
title_sort |
spatially averaged ice contents of ice-wedge polygon cross-sections to 3-m depth, july 2013, utqiagvik, alaska |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1876898 https://www.osti.gov/biblio/1876898 https://doi.org/10.15485/1876898 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Active layer thickness Arctic Ice permafrost Tundra wedge* Alaska |
genre_facet |
Active layer thickness Arctic Ice permafrost Tundra wedge* Alaska |
op_relation |
http://www.osti.gov/servlets/purl/1876898 https://www.osti.gov/biblio/1876898 https://doi.org/10.15485/1876898 doi:10.15485/1876898 |
op_doi |
https://doi.org/10.15485/1876898 |
_version_ |
1772812850931171328 |