Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada
ABSTRACTThe development of retrogressive thaw slumps (RTS) is known to be strongly influenced by relief-related parameters, permafrost characteristics, and climatic triggers. To deepen the understanding of RTS, this study examines the subsurface characteristics in the vicinity of an active thaw slum...
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2023
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ftdoajarticles:oai:doaj.org/article:52ba4124770342f08f0cab1fc29324cf 2024-01-28T09:57:54+01:00 Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada Julius Kunz T. Ullmann C. Kneisel R. Baumhauer 2023-12-01T00:00:00Z https://doi.org/10.1080/15230430.2023.2167358 https://doaj.org/article/52ba4124770342f08f0cab1fc29324cf EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2023.2167358 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2023.2167358 1938-4246 1523-0430 https://doaj.org/article/52ba4124770342f08f0cab1fc29324cf Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023) Retrogressive thaw slump permafrost spatiotemporal slump development near-surface geophysics remote sensing Environmental sciences GE1-350 Ecology QH540-549.5 article 2023 ftdoajarticles https://doi.org/10.1080/15230430.2023.2167358 2023-12-31T01:42:29Z ABSTRACTThe development of retrogressive thaw slumps (RTS) is known to be strongly influenced by relief-related parameters, permafrost characteristics, and climatic triggers. To deepen the understanding of RTS, this study examines the subsurface characteristics in the vicinity of an active thaw slump, located in the Richardson Mountains (Western Canadian Arctic). The investigations aim to identify relationships between the spatiotemporal slump development and the influence of subsurface structures. Information on these were gained by means of electrical resistivity tomography (ERT) and ground-penetrating radar (GPR). The spatiotemporal development of the slump was revealed by high-resolution satellite imagery and unmanned aerial vehicle–based digital elevation models (DEMs). The analysis indicated an acceleration of slump expansion, especially since 2018. The comparison of the DEMs enabled the detailed balancing of erosion and accumulation within the slump area between August 2018 and August 2019. In addition, manual frost probing and GPR revealed a strong relationship between the active layer thickness, surface morphology, and hydrology. Detected furrows in permafrost table topography seem to affect the active layer hydrology and cause a canalization of runoff toward the slump. The three-dimensional ERT data revealed a partly unfrozen layer underlying a heterogeneous permafrost body. This may influence the local hydrology and affect the development of the RTS. The results highlight the complex relationships between slump development, subsurface structure, and hydrology and indicate a distinct research need for other RTSs. Article in Journal/Newspaper Active layer thickness Antarctic and Alpine Research Arctic Arctic Northwest Territories permafrost Directory of Open Access Journals: DOAJ Articles Arctic Canada Northwest Territories Richardson Mountains ENVELOPE(-136.171,-136.171,67.000,67.000) Arctic, Antarctic, and Alpine Research 55 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Retrogressive thaw slump permafrost spatiotemporal slump development near-surface geophysics remote sensing Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Retrogressive thaw slump permafrost spatiotemporal slump development near-surface geophysics remote sensing Environmental sciences GE1-350 Ecology QH540-549.5 Julius Kunz T. Ullmann C. Kneisel R. Baumhauer Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada |
topic_facet |
Retrogressive thaw slump permafrost spatiotemporal slump development near-surface geophysics remote sensing Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
ABSTRACTThe development of retrogressive thaw slumps (RTS) is known to be strongly influenced by relief-related parameters, permafrost characteristics, and climatic triggers. To deepen the understanding of RTS, this study examines the subsurface characteristics in the vicinity of an active thaw slump, located in the Richardson Mountains (Western Canadian Arctic). The investigations aim to identify relationships between the spatiotemporal slump development and the influence of subsurface structures. Information on these were gained by means of electrical resistivity tomography (ERT) and ground-penetrating radar (GPR). The spatiotemporal development of the slump was revealed by high-resolution satellite imagery and unmanned aerial vehicle–based digital elevation models (DEMs). The analysis indicated an acceleration of slump expansion, especially since 2018. The comparison of the DEMs enabled the detailed balancing of erosion and accumulation within the slump area between August 2018 and August 2019. In addition, manual frost probing and GPR revealed a strong relationship between the active layer thickness, surface morphology, and hydrology. Detected furrows in permafrost table topography seem to affect the active layer hydrology and cause a canalization of runoff toward the slump. The three-dimensional ERT data revealed a partly unfrozen layer underlying a heterogeneous permafrost body. This may influence the local hydrology and affect the development of the RTS. The results highlight the complex relationships between slump development, subsurface structure, and hydrology and indicate a distinct research need for other RTSs. |
format |
Article in Journal/Newspaper |
author |
Julius Kunz T. Ullmann C. Kneisel R. Baumhauer |
author_facet |
Julius Kunz T. Ullmann C. Kneisel R. Baumhauer |
author_sort |
Julius Kunz |
title |
Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada |
title_short |
Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada |
title_full |
Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada |
title_fullStr |
Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada |
title_full_unstemmed |
Three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the Richardson Mountains, Northwest Territories, Canada |
title_sort |
three-dimensional subsurface architecture and its influence on the spatiotemporal development of a retrogressive thaw slump in the richardson mountains, northwest territories, canada |
publisher |
Taylor & Francis Group |
publishDate |
2023 |
url |
https://doi.org/10.1080/15230430.2023.2167358 https://doaj.org/article/52ba4124770342f08f0cab1fc29324cf |
long_lat |
ENVELOPE(-136.171,-136.171,67.000,67.000) |
geographic |
Arctic Canada Northwest Territories Richardson Mountains |
geographic_facet |
Arctic Canada Northwest Territories Richardson Mountains |
genre |
Active layer thickness Antarctic and Alpine Research Arctic Arctic Northwest Territories permafrost |
genre_facet |
Active layer thickness Antarctic and Alpine Research Arctic Arctic Northwest Territories permafrost |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2023.2167358 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2023.2167358 1938-4246 1523-0430 https://doaj.org/article/52ba4124770342f08f0cab1fc29324cf |
op_doi |
https://doi.org/10.1080/15230430.2023.2167358 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
55 |
container_issue |
1 |
_version_ |
1789329490981158912 |