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 a ~12 km transect in the Adventdalen valley in Sva...
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ftdatacite:10.17605/osf.io/86ayg 2023-05-15T13:05:36+02:00 Combined geophysical measurements provide evidence for unfrozen water in permafrost in the Adventdalen valley in Svalbard Keating, Kristina Binley, Andrew Bense, Victor van Dam, Remke Christiansen, Hanne 2018 https://dx.doi.org/10.17605/osf.io/86ayg https://eartharxiv.org/86ayg/ unknown EarthArXiv https://dx.doi.org/10.1029/2017GL076508 CC0 1.0 Universal CC0 Physical Sciences and Mathematics Earth Sciences Other Earth Sciences FOS Earth and related environmental sciences Geophysics and Seismology Hydrology Preprint Text article-journal ScholarlyArticle 2018 ftdatacite https://doi.org/10.17605/osf.io/86ayg 2021-11-05T12:55:41Z 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 a ~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, 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. Report Adventdalen Arctic permafrost Svalbard DataCite Metadata Store (German National Library of Science and Technology) Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Svalbard |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Physical Sciences and Mathematics Earth Sciences Other Earth Sciences FOS Earth and related environmental sciences Geophysics and Seismology Hydrology |
spellingShingle |
Physical Sciences and Mathematics Earth Sciences Other Earth Sciences FOS Earth and related environmental sciences Geophysics and Seismology Hydrology Keating, Kristina Binley, Andrew Bense, Victor van Dam, Remke Christiansen, Hanne Combined geophysical measurements provide evidence for unfrozen water in permafrost in the Adventdalen valley in Svalbard |
topic_facet |
Physical Sciences and Mathematics Earth Sciences Other Earth Sciences FOS Earth and related environmental sciences Geophysics and Seismology Hydrology |
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 a ~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, 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 |
Report |
author |
Keating, Kristina Binley, Andrew Bense, Victor van Dam, Remke Christiansen, Hanne |
author_facet |
Keating, Kristina Binley, Andrew Bense, Victor van Dam, Remke Christiansen, Hanne |
author_sort |
Keating, Kristina |
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 |
EarthArXiv |
publishDate |
2018 |
url |
https://dx.doi.org/10.17605/osf.io/86ayg https://eartharxiv.org/86ayg/ |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Adventdalen Arctic Svalbard |
geographic_facet |
Adventdalen Arctic Svalbard |
genre |
Adventdalen Arctic permafrost Svalbard |
genre_facet |
Adventdalen Arctic permafrost Svalbard |
op_relation |
https://dx.doi.org/10.1029/2017GL076508 |
op_rights |
CC0 1.0 Universal |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.17605/osf.io/86ayg |
_version_ |
1766388986535739392 |