Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes
Thermokarst lakes are prevalent in Arctic coastal lowland regions and sublake permafrost degradation and talik development contributes to greenhouse gas emissions by tapping the large permafrost carbon pool. Whereas lateral thermokarst lake expansion is readily apparent through remote sensing and sh...
Published in: | Journal of Geophysical Research: Solid Earth |
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Online Access: | https://epic.awi.de/id/eprint/49565/ https://hdl.handle.net/10013/epic.e48a9344-458b-4308-8660-0ff02968f9af |
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ftawi:oai:epic.awi.de:49565 2023-05-15T14:58:36+02:00 Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes Creighton, Andrea Lauren-Taylor Parsekian, Andrew D. Angelopoulos, Michael Jones, Benjamin M. Bondurant, Allen C. Engram, Melanie Lenz, Josefine Overduin, Paul Grosse, Guido Babcock, Esther L. Arp, Christopher D. 2018-11-21 https://epic.awi.de/id/eprint/49565/ https://hdl.handle.net/10013/epic.e48a9344-458b-4308-8660-0ff02968f9af unknown Wiley Creighton, A. L. T. orcid:0000-0003-3183-5396 , Parsekian, A. D. orcid:0000-0001-5072-9818 , Angelopoulos, M. orcid:0000-0003-2574-5108 , Jones, B. M. orcid:0000-0002-1517-4711 , Bondurant, A. C. , Engram, M. orcid:0000-0002-1144-1827 , Lenz, J. orcid:0000-0002-4050-3169 , Overduin, P. orcid:0000-0001-9849-4712 , Grosse, G. orcid:0000-0001-5895-2141 , Babcock, E. L. and Arp, C. D. orcid:0000-0002-6485-6225 (2018) Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes , Journal of Geophysical Research-Solid Earth, 123 (11), pp. 9310-9323 . doi:10.1029/2018JB016121 <https://doi.org/10.1029/2018JB016121> , hdl:10013/epic.e48a9344-458b-4308-8660-0ff02968f9af EPIC3Journal of Geophysical Research-Solid Earth, Wiley, 123(11), pp. 9310-9323, ISSN: 0148-0227 Article isiRev info:eu-repo/semantics/article 2018 ftawi https://doi.org/10.1029/2018JB016121 2021-12-24T15:44:42Z Thermokarst lakes are prevalent in Arctic coastal lowland regions and sublake permafrost degradation and talik development contributes to greenhouse gas emissions by tapping the large permafrost carbon pool. Whereas lateral thermokarst lake expansion is readily apparent through remote sensing and shoreline measurements, sublake thawed sediment conditions and talik growth are difficult to measure. Here we combine transient electromagnetic surveys with thermal modeling, backed up by measured permafrost properties and radiocarbon ages, to reveal closed‐talik geometry associated with a thermokarst lake in continuous permafrost. To improve access to talik geometry data, we conducted surveys along three transient electromagnetic transects perpendicular to lakeshores with different decadal‐scale expansion rates of 0.16, 0.38, and 0.58 m/year. We modeled thermal development of the talik using boundary conditions based on field data from the lake, surrounding permafrost and a borehole, independent of the transient electromagnetics. A talik depth of 91 m was determined from analysis of the transient electromagnetic surveys. Using a lake initiation age of 1400 years before present and available subsurface properties the results from thermal modeling of the lake center arrived at a best estimate talk depth of 80 m, which is on the same order of magnitude as the results from the transient electromagnetic survey. Our approach has provided a noninvasive estimate of talik geometry suitable for comparable settings throughout circum‐Arctic coastal lowland regions. Article in Journal/Newspaper Arctic permafrost Thermokarst Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Talik ENVELOPE(146.601,146.601,59.667,59.667) Journal of Geophysical Research: Solid Earth 123 11 9310 9323 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Thermokarst lakes are prevalent in Arctic coastal lowland regions and sublake permafrost degradation and talik development contributes to greenhouse gas emissions by tapping the large permafrost carbon pool. Whereas lateral thermokarst lake expansion is readily apparent through remote sensing and shoreline measurements, sublake thawed sediment conditions and talik growth are difficult to measure. Here we combine transient electromagnetic surveys with thermal modeling, backed up by measured permafrost properties and radiocarbon ages, to reveal closed‐talik geometry associated with a thermokarst lake in continuous permafrost. To improve access to talik geometry data, we conducted surveys along three transient electromagnetic transects perpendicular to lakeshores with different decadal‐scale expansion rates of 0.16, 0.38, and 0.58 m/year. We modeled thermal development of the talik using boundary conditions based on field data from the lake, surrounding permafrost and a borehole, independent of the transient electromagnetics. A talik depth of 91 m was determined from analysis of the transient electromagnetic surveys. Using a lake initiation age of 1400 years before present and available subsurface properties the results from thermal modeling of the lake center arrived at a best estimate talk depth of 80 m, which is on the same order of magnitude as the results from the transient electromagnetic survey. Our approach has provided a noninvasive estimate of talik geometry suitable for comparable settings throughout circum‐Arctic coastal lowland regions. |
format |
Article in Journal/Newspaper |
author |
Creighton, Andrea Lauren-Taylor Parsekian, Andrew D. Angelopoulos, Michael Jones, Benjamin M. Bondurant, Allen C. Engram, Melanie Lenz, Josefine Overduin, Paul Grosse, Guido Babcock, Esther L. Arp, Christopher D. |
spellingShingle |
Creighton, Andrea Lauren-Taylor Parsekian, Andrew D. Angelopoulos, Michael Jones, Benjamin M. Bondurant, Allen C. Engram, Melanie Lenz, Josefine Overduin, Paul Grosse, Guido Babcock, Esther L. Arp, Christopher D. Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes |
author_facet |
Creighton, Andrea Lauren-Taylor Parsekian, Andrew D. Angelopoulos, Michael Jones, Benjamin M. Bondurant, Allen C. Engram, Melanie Lenz, Josefine Overduin, Paul Grosse, Guido Babcock, Esther L. Arp, Christopher D. |
author_sort |
Creighton, Andrea Lauren-Taylor |
title |
Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes |
title_short |
Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes |
title_full |
Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes |
title_fullStr |
Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes |
title_full_unstemmed |
Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes |
title_sort |
transient electromagnetic surveys for the determination of talik depth and geometry beneath thermokarst lakes |
publisher |
Wiley |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/49565/ https://hdl.handle.net/10013/epic.e48a9344-458b-4308-8660-0ff02968f9af |
long_lat |
ENVELOPE(146.601,146.601,59.667,59.667) |
geographic |
Arctic Talik |
geographic_facet |
Arctic Talik |
genre |
Arctic permafrost Thermokarst |
genre_facet |
Arctic permafrost Thermokarst |
op_source |
EPIC3Journal of Geophysical Research-Solid Earth, Wiley, 123(11), pp. 9310-9323, ISSN: 0148-0227 |
op_relation |
Creighton, A. L. T. orcid:0000-0003-3183-5396 , Parsekian, A. D. orcid:0000-0001-5072-9818 , Angelopoulos, M. orcid:0000-0003-2574-5108 , Jones, B. M. orcid:0000-0002-1517-4711 , Bondurant, A. C. , Engram, M. orcid:0000-0002-1144-1827 , Lenz, J. orcid:0000-0002-4050-3169 , Overduin, P. orcid:0000-0001-9849-4712 , Grosse, G. orcid:0000-0001-5895-2141 , Babcock, E. L. and Arp, C. D. orcid:0000-0002-6485-6225 (2018) Transient Electromagnetic Surveys for the Determination of Talik Depth and Geometry Beneath Thermokarst Lakes , Journal of Geophysical Research-Solid Earth, 123 (11), pp. 9310-9323 . doi:10.1029/2018JB016121 <https://doi.org/10.1029/2018JB016121> , hdl:10013/epic.e48a9344-458b-4308-8660-0ff02968f9af |
op_doi |
https://doi.org/10.1029/2018JB016121 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
123 |
container_issue |
11 |
container_start_page |
9310 |
op_container_end_page |
9323 |
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1766330737184735232 |