Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard
Quantifying the unfrozen water content of permafrost is critical for assessing impacts of surface warming on the reactivation of groundwater flow and release of greenhouse gasses from degrading permafrost. Unfrozen water content was determined along an ~12-km transect in the Adventdalen valley in Sv...
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Rutgers University
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ftdatacite:10.7282/t3sb490x 2023-05-15T13:05:36+02:00 Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard Christiansen, Hanne H. Keating, Kristina Binley, Andrew Bense, Victor Van Dam, Remke L. 2018 https://dx.doi.org/10.7282/t3sb490x https://scholarship.libraries.rutgers.edu/esploro/outputs/acceptedManuscript/991031549967204646 en eng Rutgers University Open Permafrost SNMR CSAMT Svalbard Norway article-journal ScholarlyArticle Text Accepted manuscript 2018 ftdatacite https://doi.org/10.7282/t3sb490x 2022-03-10T10:59:16Z Quantifying the unfrozen water content of permafrost is critical for assessing impacts of surface warming on the reactivation of groundwater flow and release of greenhouse gasses from degrading permafrost. Unfrozen water content was determined along an ~12-km transect in the Adventdalen valley in Svalbard, an area with continuous permafrost, using surface nuclear magnetic resonance and controlled source audio-magnetotelluric data. This combination of measurements allowed for differentiation of saline from fresh pore water, and frozen from unfrozen pore water. Above the limit of Holocene marine transgression, no unfrozen water was detected, associated with high electrical resistivity. Below the marine limit, within several kilometers of the coast, up to ~10% unfrozen water content was detected, associated with low resistivity values indicating saline pore water. These results provide evidence for unfrozen water within continuous, thick permafrost in coastal settings, which has implications for groundwater flow and greenhouse gas release in similar Arctic environments. Text Adventdalen Arctic permafrost Svalbard DataCite Metadata Store (German National Library of Science and Technology) Arctic Svalbard Norway Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Permafrost SNMR CSAMT Svalbard Norway |
spellingShingle |
Permafrost SNMR CSAMT Svalbard Norway Christiansen, Hanne H. Keating, Kristina Binley, Andrew Bense, Victor Van Dam, Remke L. Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard |
topic_facet |
Permafrost SNMR CSAMT Svalbard Norway |
description |
Quantifying the unfrozen water content of permafrost is critical for assessing impacts of surface warming on the reactivation of groundwater flow and release of greenhouse gasses from degrading permafrost. Unfrozen water content was determined along an ~12-km transect in the Adventdalen valley in Svalbard, an area with continuous permafrost, using surface nuclear magnetic resonance and controlled source audio-magnetotelluric data. This combination of measurements allowed for differentiation of saline from fresh pore water, and frozen from unfrozen pore water. Above the limit of Holocene marine transgression, no unfrozen water was detected, associated with high electrical resistivity. Below the marine limit, within several kilometers of the coast, up to ~10% unfrozen water content was detected, associated with low resistivity values indicating saline pore water. These results provide evidence for unfrozen water within continuous, thick permafrost in coastal settings, which has implications for groundwater flow and greenhouse gas release in similar Arctic environments. |
format |
Text |
author |
Christiansen, Hanne H. Keating, Kristina Binley, Andrew Bense, Victor Van Dam, Remke L. |
author_facet |
Christiansen, Hanne H. Keating, Kristina Binley, Andrew Bense, Victor Van Dam, Remke L. |
author_sort |
Christiansen, Hanne H. |
title |
Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard |
title_short |
Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard |
title_full |
Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard |
title_fullStr |
Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard |
title_full_unstemmed |
Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard |
title_sort |
combined geophysical measurements provide evidence for unfrozen water in permafrost in the adventdalen valley in svalbard |
publisher |
Rutgers University |
publishDate |
2018 |
url |
https://dx.doi.org/10.7282/t3sb490x https://scholarship.libraries.rutgers.edu/esploro/outputs/acceptedManuscript/991031549967204646 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Arctic Svalbard Norway Adventdalen |
geographic_facet |
Arctic Svalbard Norway Adventdalen |
genre |
Adventdalen Arctic permafrost Svalbard |
genre_facet |
Adventdalen Arctic permafrost Svalbard |
op_rights |
Open |
op_doi |
https://doi.org/10.7282/t3sb490x |
_version_ |
1766388828734488576 |