Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic
The terrestrial Arctic is warming rapidly, causing changes in the degree of freezing of the upper sediments, which the mechanical properties of unconsolidated sediments strongly depend upon. This study investigates the potential of using time-lapse surface seismics to monitor thawing of currently (p...
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ftmdpi:oai:mdpi.com:/2076-3417/10/5/1875/ 2023-08-20T04:03:52+02:00 Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic Helene Meling Stemland Tor Arne Johansen Bent Ole Ruud agris 2020-03-09 application/pdf https://doi.org/10.3390/app10051875 EN eng Multidisciplinary Digital Publishing Institute Acoustics and Vibrations https://dx.doi.org/10.3390/app10051875 https://creativecommons.org/licenses/by/4.0/ Applied Sciences; Volume 10; Issue 5; Pages: 1875 geophysics permafrost rayleigh wave heat flux modeling seismic modeling rock physics modeling seismic experiments frozen ground saline Text 2020 ftmdpi https://doi.org/10.3390/app10051875 2023-07-31T23:12:54Z The terrestrial Arctic is warming rapidly, causing changes in the degree of freezing of the upper sediments, which the mechanical properties of unconsolidated sediments strongly depend upon. This study investigates the potential of using time-lapse surface seismics to monitor thawing of currently (partly) frozen ground utilizing synthetic and real seismic data. First, we construct a simple geological model having an initial temperature of −5 °C, and infer constant surface temperatures of −5 °C, +1 °C, +5 °C, and +10 °C for four years to this model. The geological models inferred by the various thermal regimes are converted to seismic models using rock physics modeling and subsequently seismic modeling based on wavenumber integration. Real seismic data reflecting altered surface temperatures were acquired by repeated experiments in the Norwegian Arctic during early autumn to mid-winter. Comparison of the surface wave characteristics of both synthetic and real seismic data reveals time-lapse effects that are related to thawing caused by varying surface temperatures. In particular, the surface wave dispersion is sensitive to the degree of freezing in unconsolidated sediments. This demonstrates the potential of using surface seismics for Arctic climate monitoring, but inversion of dispersion curves and knowledge of the local near-surface geology is important for such studies to be conclusive. Text Arctic permafrost MDPI Open Access Publishing Arctic Applied Sciences 10 5 1875 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
geophysics permafrost rayleigh wave heat flux modeling seismic modeling rock physics modeling seismic experiments frozen ground saline |
spellingShingle |
geophysics permafrost rayleigh wave heat flux modeling seismic modeling rock physics modeling seismic experiments frozen ground saline Helene Meling Stemland Tor Arne Johansen Bent Ole Ruud Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic |
topic_facet |
geophysics permafrost rayleigh wave heat flux modeling seismic modeling rock physics modeling seismic experiments frozen ground saline |
description |
The terrestrial Arctic is warming rapidly, causing changes in the degree of freezing of the upper sediments, which the mechanical properties of unconsolidated sediments strongly depend upon. This study investigates the potential of using time-lapse surface seismics to monitor thawing of currently (partly) frozen ground utilizing synthetic and real seismic data. First, we construct a simple geological model having an initial temperature of −5 °C, and infer constant surface temperatures of −5 °C, +1 °C, +5 °C, and +10 °C for four years to this model. The geological models inferred by the various thermal regimes are converted to seismic models using rock physics modeling and subsequently seismic modeling based on wavenumber integration. Real seismic data reflecting altered surface temperatures were acquired by repeated experiments in the Norwegian Arctic during early autumn to mid-winter. Comparison of the surface wave characteristics of both synthetic and real seismic data reveals time-lapse effects that are related to thawing caused by varying surface temperatures. In particular, the surface wave dispersion is sensitive to the degree of freezing in unconsolidated sediments. This demonstrates the potential of using surface seismics for Arctic climate monitoring, but inversion of dispersion curves and knowledge of the local near-surface geology is important for such studies to be conclusive. |
format |
Text |
author |
Helene Meling Stemland Tor Arne Johansen Bent Ole Ruud |
author_facet |
Helene Meling Stemland Tor Arne Johansen Bent Ole Ruud |
author_sort |
Helene Meling Stemland |
title |
Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic |
title_short |
Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic |
title_full |
Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic |
title_fullStr |
Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic |
title_full_unstemmed |
Potential Use of Time-Lapse Surface Seismics for Monitoring Thawing of the Terrestrial Arctic |
title_sort |
potential use of time-lapse surface seismics for monitoring thawing of the terrestrial arctic |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/app10051875 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Applied Sciences; Volume 10; Issue 5; Pages: 1875 |
op_relation |
Acoustics and Vibrations https://dx.doi.org/10.3390/app10051875 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/app10051875 |
container_title |
Applied Sciences |
container_volume |
10 |
container_issue |
5 |
container_start_page |
1875 |
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1774714293398274048 |