Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data
Permafrost is widely distributed in the Tibetan Plateau. Seasonal freeze−thaw cycles of permafrost result in upward and downward surface displacement. Multitemporal interferometric synthetic aperture radar (MT-InSAR) observations provide an effective method for monitoring permafrost displacement und...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2019
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs11091000 https://doaj.org/article/950dc225533c4d838a5a12fb187e4ec1 |
id |
ftdoajarticles:oai:doaj.org/article:950dc225533c4d838a5a12fb187e4ec1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:950dc225533c4d838a5a12fb187e4ec1 2023-05-15T17:57:05+02:00 Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data Xuefei Zhang Hong Zhang Chao Wang Yixian Tang Bo Zhang Fan Wu Jing Wang Zhengjia Zhang 2019-04-01T00:00:00Z https://doi.org/10.3390/rs11091000 https://doaj.org/article/950dc225533c4d838a5a12fb187e4ec1 EN eng MDPI AG https://www.mdpi.com/2072-4292/11/9/1000 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs11091000 https://doaj.org/article/950dc225533c4d838a5a12fb187e4ec1 Remote Sensing, Vol 11, Iss 9, p 1000 (2019) Tibetan Plateau MT-InSAR NSBAS seasonal displacements Science Q article 2019 ftdoajarticles https://doi.org/10.3390/rs11091000 2022-12-30T20:32:16Z Permafrost is widely distributed in the Tibetan Plateau. Seasonal freeze−thaw cycles of permafrost result in upward and downward surface displacement. Multitemporal interferometric synthetic aperture radar (MT-InSAR) observations provide an effective method for monitoring permafrost displacement under difficult terrain and climatic conditions. In this study, a seasonal sinusoidal model-based new small baselines subset (NSBAS) chain was adopted to obtain a deformation time series. An experimental study was carried out using 33 scenes of Sentinel-1 data (S-1) from 28 November 2017 to 29 December 2018 with frequent revisit (12 days) observations. The spatial and temporal characteristics of the surface displacements variation combined with different types of surface land cover, elevation and surface temperature factors were analyzed. The results revealed that the seasonal changes observed in the time series of ground movements, induced by freeze−thaw cycles were observed on flat surfaces of sedimentary basins and mountainous areas with gentle slopes. The estimated seasonal oscillations ranged from 2 mm to 30 mm, which were smaller in Alpine deserts than in Alpine meadows. In particular, there were significant systematic differences in seasonal surface deformation between areas near mountains and sedimentary basins. It was also found that the time series of deformation was consistent with the variation of surface temperature. Based on soil moisture active/passive (SMAP) L4 surface and root zone soil moisture data, the deformation analysis influenced by soil moisture factors was also carried out. The comprehensive analysis of deformation results and auxiliary data (elevation, soil moisture and surface temperature et al.) provides important insights for the monitoring of the seasonal freeze-thaw cycles in the Tibetan Plateau. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Remote Sensing 11 9 1000 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Tibetan Plateau MT-InSAR NSBAS seasonal displacements Science Q |
spellingShingle |
Tibetan Plateau MT-InSAR NSBAS seasonal displacements Science Q Xuefei Zhang Hong Zhang Chao Wang Yixian Tang Bo Zhang Fan Wu Jing Wang Zhengjia Zhang Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data |
topic_facet |
Tibetan Plateau MT-InSAR NSBAS seasonal displacements Science Q |
description |
Permafrost is widely distributed in the Tibetan Plateau. Seasonal freeze−thaw cycles of permafrost result in upward and downward surface displacement. Multitemporal interferometric synthetic aperture radar (MT-InSAR) observations provide an effective method for monitoring permafrost displacement under difficult terrain and climatic conditions. In this study, a seasonal sinusoidal model-based new small baselines subset (NSBAS) chain was adopted to obtain a deformation time series. An experimental study was carried out using 33 scenes of Sentinel-1 data (S-1) from 28 November 2017 to 29 December 2018 with frequent revisit (12 days) observations. The spatial and temporal characteristics of the surface displacements variation combined with different types of surface land cover, elevation and surface temperature factors were analyzed. The results revealed that the seasonal changes observed in the time series of ground movements, induced by freeze−thaw cycles were observed on flat surfaces of sedimentary basins and mountainous areas with gentle slopes. The estimated seasonal oscillations ranged from 2 mm to 30 mm, which were smaller in Alpine deserts than in Alpine meadows. In particular, there were significant systematic differences in seasonal surface deformation between areas near mountains and sedimentary basins. It was also found that the time series of deformation was consistent with the variation of surface temperature. Based on soil moisture active/passive (SMAP) L4 surface and root zone soil moisture data, the deformation analysis influenced by soil moisture factors was also carried out. The comprehensive analysis of deformation results and auxiliary data (elevation, soil moisture and surface temperature et al.) provides important insights for the monitoring of the seasonal freeze-thaw cycles in the Tibetan Plateau. |
format |
Article in Journal/Newspaper |
author |
Xuefei Zhang Hong Zhang Chao Wang Yixian Tang Bo Zhang Fan Wu Jing Wang Zhengjia Zhang |
author_facet |
Xuefei Zhang Hong Zhang Chao Wang Yixian Tang Bo Zhang Fan Wu Jing Wang Zhengjia Zhang |
author_sort |
Xuefei Zhang |
title |
Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data |
title_short |
Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data |
title_full |
Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data |
title_fullStr |
Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data |
title_full_unstemmed |
Time-Series InSAR Monitoring of Permafrost Freeze-Thaw Seasonal Displacement over Qinghai–Tibetan Plateau Using Sentinel-1 Data |
title_sort |
time-series insar monitoring of permafrost freeze-thaw seasonal displacement over qinghai–tibetan plateau using sentinel-1 data |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11091000 https://doaj.org/article/950dc225533c4d838a5a12fb187e4ec1 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Remote Sensing, Vol 11, Iss 9, p 1000 (2019) |
op_relation |
https://www.mdpi.com/2072-4292/11/9/1000 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs11091000 https://doaj.org/article/950dc225533c4d838a5a12fb187e4ec1 |
op_doi |
https://doi.org/10.3390/rs11091000 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
9 |
container_start_page |
1000 |
_version_ |
1766165446755614720 |