Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard)
Abstract Two seismic field surveys were organized in the Fuglebekken coastal catchment of Hornsund, Spitsbergen, Svalbard, to map frozen and unfrozen ground and assess the spatial and temporal state of the permafrost. Surveys were conducted during maximum thawing in September and maximum freezing in...
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Online Access: | http://dx.doi.org/10.1002/ppp.2147 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2147 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2147 |
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crwiley:10.1002/ppp.2147 2024-05-19T07:41:41+00:00 Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) Majdański, Mariusz Dobiński, Wojciech Marciniak, Artur Owoc, Bartosz Glazer, Michał Osuch, Marzena Wawrzyniak, Tomasz Narodowe Centrum Nauki 2022 http://dx.doi.org/10.1002/ppp.2147 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2147 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2147 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 33, issue 3, page 264-276 ISSN 1045-6740 1099-1530 Earth-Surface Processes journal-article 2022 crwiley https://doi.org/10.1002/ppp.2147 2024-04-22T07:33:28Z Abstract Two seismic field surveys were organized in the Fuglebekken coastal catchment of Hornsund, Spitsbergen, Svalbard, to map frozen and unfrozen ground and assess the spatial and temporal state of the permafrost. Surveys were conducted during maximum thawing in September and maximum freezing in April of the following year. The obtained seismic wavefields were interpreted using three methods: the dispersion of surface waves, seismic refraction, and travel time tomography. The seismic experiments were supported by nearby boreholes with continuous thermal monitoring. In the frozen survey, a gradual increase in ice content of water‐filled sediments was found, farther from the coast. In September the shallow sensors in the boreholes validated positive ground temperatures down to 3.0 m depth, with below‐zero temperatures at greater depths. However, seismic tomography indicated that the ground was unfrozen down to 30 m. The ground probably remained unfrozen due to intrusion of high‐salinity seawater, even though it had been below 0°C. In April, in the area 300 m and farther from the coast, the ground below 3 m depth was frozen, except for a 19‐m‐deep open talik identified in a borehole at the slope of Fugle Mountain. We attribute the complex spatial extent, form, and condition of permafrost in the Fuglebekken coastal catchment to multiple factors, including variable solar energy, snow and ground cover, thermal and humidity properties of the soil, subsurface water flow, and seawater intrusion. The presented combination of seismic methods provides a new robust and precise approach to assess the spatial variability of permafrost in a coastal environment. The proposed interpretation shows deep percolation of subsurface flow into permafrost and its seasonal unfreezing at a depth of 30 m in both the zone of saltwater intrusion and the slope area. Article in Journal/Newspaper Hornsund Ice permafrost Permafrost and Periglacial Processes Svalbard Spitsbergen Wiley Online Library Permafrost and Periglacial Processes 33 3 264 276 |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Earth-Surface Processes |
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Earth-Surface Processes Majdański, Mariusz Dobiński, Wojciech Marciniak, Artur Owoc, Bartosz Glazer, Michał Osuch, Marzena Wawrzyniak, Tomasz Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) |
topic_facet |
Earth-Surface Processes |
description |
Abstract Two seismic field surveys were organized in the Fuglebekken coastal catchment of Hornsund, Spitsbergen, Svalbard, to map frozen and unfrozen ground and assess the spatial and temporal state of the permafrost. Surveys were conducted during maximum thawing in September and maximum freezing in April of the following year. The obtained seismic wavefields were interpreted using three methods: the dispersion of surface waves, seismic refraction, and travel time tomography. The seismic experiments were supported by nearby boreholes with continuous thermal monitoring. In the frozen survey, a gradual increase in ice content of water‐filled sediments was found, farther from the coast. In September the shallow sensors in the boreholes validated positive ground temperatures down to 3.0 m depth, with below‐zero temperatures at greater depths. However, seismic tomography indicated that the ground was unfrozen down to 30 m. The ground probably remained unfrozen due to intrusion of high‐salinity seawater, even though it had been below 0°C. In April, in the area 300 m and farther from the coast, the ground below 3 m depth was frozen, except for a 19‐m‐deep open talik identified in a borehole at the slope of Fugle Mountain. We attribute the complex spatial extent, form, and condition of permafrost in the Fuglebekken coastal catchment to multiple factors, including variable solar energy, snow and ground cover, thermal and humidity properties of the soil, subsurface water flow, and seawater intrusion. The presented combination of seismic methods provides a new robust and precise approach to assess the spatial variability of permafrost in a coastal environment. The proposed interpretation shows deep percolation of subsurface flow into permafrost and its seasonal unfreezing at a depth of 30 m in both the zone of saltwater intrusion and the slope area. |
author2 |
Narodowe Centrum Nauki |
format |
Article in Journal/Newspaper |
author |
Majdański, Mariusz Dobiński, Wojciech Marciniak, Artur Owoc, Bartosz Glazer, Michał Osuch, Marzena Wawrzyniak, Tomasz |
author_facet |
Majdański, Mariusz Dobiński, Wojciech Marciniak, Artur Owoc, Bartosz Glazer, Michał Osuch, Marzena Wawrzyniak, Tomasz |
author_sort |
Majdański, Mariusz |
title |
Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) |
title_short |
Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) |
title_full |
Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) |
title_fullStr |
Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) |
title_full_unstemmed |
Variations of permafrost under freezing and thawing conditions in the coastal catchment Fuglebekken (Hornsund, Spitsbergen, Svalbard) |
title_sort |
variations of permafrost under freezing and thawing conditions in the coastal catchment fuglebekken (hornsund, spitsbergen, svalbard) |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ppp.2147 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2147 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2147 |
genre |
Hornsund Ice permafrost Permafrost and Periglacial Processes Svalbard Spitsbergen |
genre_facet |
Hornsund Ice permafrost Permafrost and Periglacial Processes Svalbard Spitsbergen |
op_source |
Permafrost and Periglacial Processes volume 33, issue 3, page 264-276 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2147 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
33 |
container_issue |
3 |
container_start_page |
264 |
op_container_end_page |
276 |
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1799481296593879040 |