Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar
Multi-channel ground-penetrating radar is used to investigate the late-summer evolution of the thaw depth and the average soil water content of the thawed active layer at a high-arctic continuous permafrost site on Svalbard, Norway. Between mid of August and mid of September 2008, five surveys have...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746741 2023-05-15T15:18:54+02:00 Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar Westermann, Sebastian Wollschläger, Ute Boike, Julia MEDIAN LATITUDE: 78.922398 * MEDIAN LONGITUDE: 11.828865 * SOUTH-BOUND LATITUDE: 78.921220 * WEST-BOUND LONGITUDE: 11.825700 * NORTH-BOUND LATITUDE: 78.923770 * EAST-BOUND LONGITUDE: 11.832870 * DATE/TIME START: 2008-08-14T12:00:00 * DATE/TIME END: 2008-09-17T12:00:00 2010-10-22 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.746741 https://doi.org/10.1594/PANGAEA.746741 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746741 https://doi.org/10.1594/PANGAEA.746741 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Westermann, Sebastian; Wollschläger, Ute; Boike, Julia (2010): Monitoring of active layer dynamics at a permafrost site on Svalbard using multi-channel ground-penetrating radar. The Cryosphere, 4, 475-487, https://doi.org/10.5194/tc-4-475-2010 AWI_PerDyn AWIPEV GPR Ground-penetrating radar LH_Transect14 LH_Transect15 NYA_Meteorological_Obs Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI T14 T15 Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.746741 https://doi.org/10.5194/tc-4-475-2010 2023-01-20T07:31:57Z Multi-channel ground-penetrating radar is used to investigate the late-summer evolution of the thaw depth and the average soil water content of the thawed active layer at a high-arctic continuous permafrost site on Svalbard, Norway. Between mid of August and mid of September 2008, five surveys have been conducted over transect lengths of 130 and 175 m each. The maximum thaw depths range from 1.6 m to 2.0 m, so that they are among the deepest thaw depths recorded for Svalbard so far. The thaw depths increase by approximately 0.2 m between mid of August and beginning of September and subsequently remain constant until mid of September. The thaw rates are approximately constant over the entire length of the transects within the measurement accuracy of about 5 to 10 cm. The average volumetric soil water content of the thawed soil varies between 0.18 and 0.27 along the investigated transects. While the measurements do not show significant changes in soil water content over the first four weeks of the study, strong precipitation causes an increase in average soil water content of up to 0.04 during the last week. These values are in good agreement with evapotranspiration and precipitation rates measured in the vicinity of the the study site. While we cannot provide conclusive reasons for the detected spatial variability of the thaw depth at the study site, our measurements show that thaw depth and average soil water content are not directly correlated. The study demonstrates the potential of multi-channel ground-penetrating radar for mapping thaw depth in permafrost areas. The novel non-invasive technique is particularly useful when the thaw depth exceeds 1.5 m, so that it is hardly accessible by manual probing. In addition, multi-channel ground-penetrating radar holds potential for mapping the latent heat content of the active layer and for estimating weekly to monthly averages of the ground heat flux during the thaw period. Dataset Arctic Ny Ålesund Ny-Ålesund permafrost Svalbard The Cryosphere Spitsbergen PANGAEA - Data Publisher for Earth & Environmental Science Arctic Norway Ny-Ålesund Svalbard ENVELOPE(11.825700,11.832870,78.923770,78.921220) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn AWIPEV GPR Ground-penetrating radar LH_Transect14 LH_Transect15 NYA_Meteorological_Obs Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI T14 T15 |
spellingShingle |
AWI_PerDyn AWIPEV GPR Ground-penetrating radar LH_Transect14 LH_Transect15 NYA_Meteorological_Obs Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI T14 T15 Westermann, Sebastian Wollschläger, Ute Boike, Julia Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar |
topic_facet |
AWI_PerDyn AWIPEV GPR Ground-penetrating radar LH_Transect14 LH_Transect15 NYA_Meteorological_Obs Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI T14 T15 |
description |
Multi-channel ground-penetrating radar is used to investigate the late-summer evolution of the thaw depth and the average soil water content of the thawed active layer at a high-arctic continuous permafrost site on Svalbard, Norway. Between mid of August and mid of September 2008, five surveys have been conducted over transect lengths of 130 and 175 m each. The maximum thaw depths range from 1.6 m to 2.0 m, so that they are among the deepest thaw depths recorded for Svalbard so far. The thaw depths increase by approximately 0.2 m between mid of August and beginning of September and subsequently remain constant until mid of September. The thaw rates are approximately constant over the entire length of the transects within the measurement accuracy of about 5 to 10 cm. The average volumetric soil water content of the thawed soil varies between 0.18 and 0.27 along the investigated transects. While the measurements do not show significant changes in soil water content over the first four weeks of the study, strong precipitation causes an increase in average soil water content of up to 0.04 during the last week. These values are in good agreement with evapotranspiration and precipitation rates measured in the vicinity of the the study site. While we cannot provide conclusive reasons for the detected spatial variability of the thaw depth at the study site, our measurements show that thaw depth and average soil water content are not directly correlated. The study demonstrates the potential of multi-channel ground-penetrating radar for mapping thaw depth in permafrost areas. The novel non-invasive technique is particularly useful when the thaw depth exceeds 1.5 m, so that it is hardly accessible by manual probing. In addition, multi-channel ground-penetrating radar holds potential for mapping the latent heat content of the active layer and for estimating weekly to monthly averages of the ground heat flux during the thaw period. |
format |
Dataset |
author |
Westermann, Sebastian Wollschläger, Ute Boike, Julia |
author_facet |
Westermann, Sebastian Wollschläger, Ute Boike, Julia |
author_sort |
Westermann, Sebastian |
title |
Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar |
title_short |
Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar |
title_full |
Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar |
title_fullStr |
Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar |
title_full_unstemmed |
Monitoring of active layer dynamics at two transects on Svalbard using multi-channel ground-penetrating radar |
title_sort |
monitoring of active layer dynamics at two transects on svalbard using multi-channel ground-penetrating radar |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746741 https://doi.org/10.1594/PANGAEA.746741 |
op_coverage |
MEDIAN LATITUDE: 78.922398 * MEDIAN LONGITUDE: 11.828865 * SOUTH-BOUND LATITUDE: 78.921220 * WEST-BOUND LONGITUDE: 11.825700 * NORTH-BOUND LATITUDE: 78.923770 * EAST-BOUND LONGITUDE: 11.832870 * DATE/TIME START: 2008-08-14T12:00:00 * DATE/TIME END: 2008-09-17T12:00:00 |
long_lat |
ENVELOPE(11.825700,11.832870,78.923770,78.921220) |
geographic |
Arctic Norway Ny-Ålesund Svalbard |
geographic_facet |
Arctic Norway Ny-Ålesund Svalbard |
genre |
Arctic Ny Ålesund Ny-Ålesund permafrost Svalbard The Cryosphere Spitsbergen |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund permafrost Svalbard The Cryosphere Spitsbergen |
op_source |
Supplement to: Westermann, Sebastian; Wollschläger, Ute; Boike, Julia (2010): Monitoring of active layer dynamics at a permafrost site on Svalbard using multi-channel ground-penetrating radar. The Cryosphere, 4, 475-487, https://doi.org/10.5194/tc-4-475-2010 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746741 https://doi.org/10.1594/PANGAEA.746741 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.746741 https://doi.org/10.5194/tc-4-475-2010 |
_version_ |
1766349072210329600 |