Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020
Pine Island Glacier (PIG) is one of the largest contributors to sea level rise in Antarctica. Continuous thinning and frequent calving imply significant destabilization of Pine Island Glacier Ice Shelf (PIGIS). To understand the mechanism of its accelerated disintegration and its future development,...
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Online Access: | https://doi.org/10.3390/jmse10070976 |
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ftmdpi:oai:mdpi.com:/2077-1312/10/7/976/ 2023-08-20T04:01:38+02:00 Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 Shijie Liu Shu Su Yuan Cheng Xiaohua Tong Rongxing Li agris 2022-07-16 application/pdf https://doi.org/10.3390/jmse10070976 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/jmse10070976 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 10; Issue 7; Pages: 976 Pine Island Glacier Ice Shelf ice flow velocity ocean water temperature ice shelf disintegration multi-source remote sensing Text 2022 ftmdpi https://doi.org/10.3390/jmse10070976 2023-08-01T05:43:59Z Pine Island Glacier (PIG) is one of the largest contributors to sea level rise in Antarctica. Continuous thinning and frequent calving imply significant destabilization of Pine Island Glacier Ice Shelf (PIGIS). To understand the mechanism of its accelerated disintegration and its future development, we conducted a long-term monitoring and comprehensive analysis of PIGIS, including ice flow velocity, ice shelf fronts, ocean water temperature, rifts, and surface strain rates, based on multi-source satellite observations during 1973–2020. The results reveal that: (1) ice flow velocities of PIGIS increased from 2.3 km/yr in 1973 to 4.5 km/yr in 2020, with two rapid acceleration periods of 1995–2009 and 2017–2020, and its change was highly correlated to the ocean water temperature variation. (2) At least 13 calving events occurred during 1973–2020, with four unprecedented successive retreats in 2015, 2017, 2018, and 2020. (3) The acceleration of ice shelf rifting and calving may correlate to the destruction of shear margins, while this damage was likely a response to the warming of bottom seawater. The weakening southern shear margin may continue to recede, indicating that the instability of PIGIS will continue. Text Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier MDPI Open Access Publishing Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) Journal of Marine Science and Engineering 10 7 976 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Pine Island Glacier Ice Shelf ice flow velocity ocean water temperature ice shelf disintegration multi-source remote sensing |
spellingShingle |
Pine Island Glacier Ice Shelf ice flow velocity ocean water temperature ice shelf disintegration multi-source remote sensing Shijie Liu Shu Su Yuan Cheng Xiaohua Tong Rongxing Li Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 |
topic_facet |
Pine Island Glacier Ice Shelf ice flow velocity ocean water temperature ice shelf disintegration multi-source remote sensing |
description |
Pine Island Glacier (PIG) is one of the largest contributors to sea level rise in Antarctica. Continuous thinning and frequent calving imply significant destabilization of Pine Island Glacier Ice Shelf (PIGIS). To understand the mechanism of its accelerated disintegration and its future development, we conducted a long-term monitoring and comprehensive analysis of PIGIS, including ice flow velocity, ice shelf fronts, ocean water temperature, rifts, and surface strain rates, based on multi-source satellite observations during 1973–2020. The results reveal that: (1) ice flow velocities of PIGIS increased from 2.3 km/yr in 1973 to 4.5 km/yr in 2020, with two rapid acceleration periods of 1995–2009 and 2017–2020, and its change was highly correlated to the ocean water temperature variation. (2) At least 13 calving events occurred during 1973–2020, with four unprecedented successive retreats in 2015, 2017, 2018, and 2020. (3) The acceleration of ice shelf rifting and calving may correlate to the destruction of shear margins, while this damage was likely a response to the warming of bottom seawater. The weakening southern shear margin may continue to recede, indicating that the instability of PIGIS will continue. |
format |
Text |
author |
Shijie Liu Shu Su Yuan Cheng Xiaohua Tong Rongxing Li |
author_facet |
Shijie Liu Shu Su Yuan Cheng Xiaohua Tong Rongxing Li |
author_sort |
Shijie Liu |
title |
Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 |
title_short |
Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 |
title_full |
Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 |
title_fullStr |
Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 |
title_full_unstemmed |
Long-Term Monitoring and Change Analysis of Pine Island Ice Shelf Based on Multi-Source Satellite Observations during 1973–2020 |
title_sort |
long-term monitoring and change analysis of pine island ice shelf based on multi-source satellite observations during 1973–2020 |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/jmse10070976 |
op_coverage |
agris |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Pine Island Glacier |
geographic_facet |
Pine Island Glacier |
genre |
Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier |
genre_facet |
Antarc* Antarctica Ice Shelf Pine Island Pine Island Glacier |
op_source |
Journal of Marine Science and Engineering; Volume 10; Issue 7; Pages: 976 |
op_relation |
https://dx.doi.org/10.3390/jmse10070976 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse10070976 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
7 |
container_start_page |
976 |
_version_ |
1774724884339884032 |