Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau
Abstract The thawing of ice‐rich permafrost has attracted considerable attention in recent years. In this study, we analyzed both the ground surface deformation time series spanning 6 years, derived through the SBAS‐InSAR technique on the Qinghai‐Xizang (Tibet) Plateau (QTP), and the long‐term activ...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.2171 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2171 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2171 |
id |
crwiley:10.1002/ppp.2171 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.2171 2024-09-15T18:11:21+00:00 Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau Wang, Lingxiao Zhao, Lin Zhou, Huayun Liu, Shibo Hu, Guojie Li, Zhibin Wang, Chong Zhao, Jianting National Natural Science Foundation of China Major Basic Research Project of the Natural Science Foundation of the Jiangsu Higher Education Institutions 2022 http://dx.doi.org/10.1002/ppp.2171 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2171 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2171 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 34, issue 1, page 52-67 ISSN 1045-6740 1099-1530 journal-article 2022 crwiley https://doi.org/10.1002/ppp.2171 2024-08-27T04:25:51Z Abstract The thawing of ice‐rich permafrost has attracted considerable attention in recent years. In this study, we analyzed both the ground surface deformation time series spanning 6 years, derived through the SBAS‐InSAR technique on the Qinghai‐Xizang (Tibet) Plateau (QTP), and the long‐term active layer soil temperature and moisture in situ observations and their relationships. The results showed that long‐term subsidence velocity directly represents the melting of ground ice instead of the thickening rate of the active layer by a quantitative analysis of both terrain subsidence velocity and active layer thickening rate and the increase in liquid water at the bottom of the active layer. Ice‐poor permafrost thawing does not result in distinct subsidence, although the active layer deepening rate can be very high. The spatial analysis reveals that long‐term deformation velocities are large in the foothills and on gentle slopes (1–5 degrees) and are closely related to geomorphological conditions, which could regulate the soil properties and ground ice content. These findings improve the understanding of the thawing degradation of icy permafrost and promote method developments for the automated mapping of ground ice melting in permafrost environments. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 34 1 52 67 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The thawing of ice‐rich permafrost has attracted considerable attention in recent years. In this study, we analyzed both the ground surface deformation time series spanning 6 years, derived through the SBAS‐InSAR technique on the Qinghai‐Xizang (Tibet) Plateau (QTP), and the long‐term active layer soil temperature and moisture in situ observations and their relationships. The results showed that long‐term subsidence velocity directly represents the melting of ground ice instead of the thickening rate of the active layer by a quantitative analysis of both terrain subsidence velocity and active layer thickening rate and the increase in liquid water at the bottom of the active layer. Ice‐poor permafrost thawing does not result in distinct subsidence, although the active layer deepening rate can be very high. The spatial analysis reveals that long‐term deformation velocities are large in the foothills and on gentle slopes (1–5 degrees) and are closely related to geomorphological conditions, which could regulate the soil properties and ground ice content. These findings improve the understanding of the thawing degradation of icy permafrost and promote method developments for the automated mapping of ground ice melting in permafrost environments. |
author2 |
National Natural Science Foundation of China Major Basic Research Project of the Natural Science Foundation of the Jiangsu Higher Education Institutions |
format |
Article in Journal/Newspaper |
author |
Wang, Lingxiao Zhao, Lin Zhou, Huayun Liu, Shibo Hu, Guojie Li, Zhibin Wang, Chong Zhao, Jianting |
spellingShingle |
Wang, Lingxiao Zhao, Lin Zhou, Huayun Liu, Shibo Hu, Guojie Li, Zhibin Wang, Chong Zhao, Jianting Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau |
author_facet |
Wang, Lingxiao Zhao, Lin Zhou, Huayun Liu, Shibo Hu, Guojie Li, Zhibin Wang, Chong Zhao, Jianting |
author_sort |
Wang, Lingxiao |
title |
Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau |
title_short |
Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau |
title_full |
Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau |
title_fullStr |
Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau |
title_full_unstemmed |
Evidence of ground ice melting detected by InSAR and in situ monitoring over permafrost terrain on the Qinghai‐Xizang (Tibet) Plateau |
title_sort |
evidence of ground ice melting detected by insar and in situ monitoring over permafrost terrain on the qinghai‐xizang (tibet) plateau |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ppp.2171 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2171 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2171 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 34, issue 1, page 52-67 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2171 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
34 |
container_issue |
1 |
container_start_page |
52 |
op_container_end_page |
67 |
_version_ |
1810448939379326976 |