Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array
The study of seismic sources and wave propagation in ice plate is helpful to understand the structure, migration, fracture mechanics, mass balance and other processes. However, due to extreme environment, in-situ dense seismic observations are rare and the dynamic changes of the ice plate remain poo...
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ftcopernicus:oai:publications.copernicus.org:tcd109593 2023-05-15T16:41:54+02:00 Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array Xie, Jun Zeng, Xiangfang Liang, Chao Ni, Sidao Chu, Risheng Bao, Feng Lin, Rongbing Chi, Benxin Lv, Hao 2023-02-21 application/pdf https://doi.org/10.5194/tc-2023-26 https://tc.copernicus.org/preprints/tc-2023-26/ eng eng doi:10.5194/tc-2023-26 https://tc.copernicus.org/preprints/tc-2023-26/ eISSN: 1994-0424 Text 2023 ftcopernicus https://doi.org/10.5194/tc-2023-26 2023-02-27T17:22:58Z The study of seismic sources and wave propagation in ice plate is helpful to understand the structure, migration, fracture mechanics, mass balance and other processes. However, due to extreme environment, in-situ dense seismic observations are rare and the dynamic changes of the ice plate remain poorly understood. We conduct a seismic experiment with distributed acoustic sensing array on a frozen lake. We excite water vibrations by under-water airgun shots. With an artificial intelligence method, we detected seismic signals including high frequency icequakes and low frequency events. Icequakes cluster along the fractures and correlate with the local temperature variation. The flexural-gravity wave reveals the property of the ice plate. Our study demonstrates the utility of DAS array as an in-situ dense seismic network in illuminating the internal failure process and dynamic deformation of ice plate such as ice shelf, which contributes to understanding and prediction of disintegrations of ice shelves. Text Ice Shelf Ice Shelves Copernicus Publications: E-Journals Frozen Lake ENVELOPE(76.108,76.108,-69.415,-69.415) |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The study of seismic sources and wave propagation in ice plate is helpful to understand the structure, migration, fracture mechanics, mass balance and other processes. However, due to extreme environment, in-situ dense seismic observations are rare and the dynamic changes of the ice plate remain poorly understood. We conduct a seismic experiment with distributed acoustic sensing array on a frozen lake. We excite water vibrations by under-water airgun shots. With an artificial intelligence method, we detected seismic signals including high frequency icequakes and low frequency events. Icequakes cluster along the fractures and correlate with the local temperature variation. The flexural-gravity wave reveals the property of the ice plate. Our study demonstrates the utility of DAS array as an in-situ dense seismic network in illuminating the internal failure process and dynamic deformation of ice plate such as ice shelf, which contributes to understanding and prediction of disintegrations of ice shelves. |
format |
Text |
author |
Xie, Jun Zeng, Xiangfang Liang, Chao Ni, Sidao Chu, Risheng Bao, Feng Lin, Rongbing Chi, Benxin Lv, Hao |
spellingShingle |
Xie, Jun Zeng, Xiangfang Liang, Chao Ni, Sidao Chu, Risheng Bao, Feng Lin, Rongbing Chi, Benxin Lv, Hao Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
author_facet |
Xie, Jun Zeng, Xiangfang Liang, Chao Ni, Sidao Chu, Risheng Bao, Feng Lin, Rongbing Chi, Benxin Lv, Hao |
author_sort |
Xie, Jun |
title |
Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
title_short |
Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
title_full |
Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
title_fullStr |
Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
title_full_unstemmed |
Ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
title_sort |
ice plate deformation and cracking revealed by an in-situ distributed acoustic sensing array |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-2023-26 https://tc.copernicus.org/preprints/tc-2023-26/ |
long_lat |
ENVELOPE(76.108,76.108,-69.415,-69.415) |
geographic |
Frozen Lake |
geographic_facet |
Frozen Lake |
genre |
Ice Shelf Ice Shelves |
genre_facet |
Ice Shelf Ice Shelves |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-2023-26 https://tc.copernicus.org/preprints/tc-2023-26/ |
op_doi |
https://doi.org/10.5194/tc-2023-26 |
_version_ |
1766032363877302272 |