A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations
We present results of a regional comparative study of surface mass changes from 2004 to 2008 based on Gravity Recovery and Climate Experiment (GRACE), The Ice, Cloud and Land Elevation Satellite (ICESat) and CHINARE observations over the Lambert Glacier/Amery Ice Shelf system (LAS). Estimation of th...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2016-10-01
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| Series: | Journal of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0022143016000769/type/journal_article |
| _version_ | 1811155883763171328 |
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| author | HUAN XIE RONGXING LI XIAOHUA TONG XIAOLEI JU JUN LIU YUNZHONG SHEN LEI CHEN SHIJIE LIU BO SUN XIANGBIN CUI YIXIANG TIAN WENKAI YE |
| author_facet | HUAN XIE RONGXING LI XIAOHUA TONG XIAOLEI JU JUN LIU YUNZHONG SHEN LEI CHEN SHIJIE LIU BO SUN XIANGBIN CUI YIXIANG TIAN WENKAI YE |
| author_sort | HUAN XIE |
| collection | DOAJ |
| description | We present results of a regional comparative study of surface mass changes from 2004 to 2008 based on Gravity Recovery and Climate Experiment (GRACE), The Ice, Cloud and Land Elevation Satellite (ICESat) and CHINARE observations over the Lambert Glacier/Amery Ice Shelf system (LAS). Estimation of the ICESat mass change rates benefitted from the density measurements along the CHINARE traverse and a spatial density adjustment method for reducing the effect of spatial density variations. In the high-elevation inland region, a positive trend was estimated from both ICESat and GRACE data, which is in line with the CHINARE accumulation measurements. In the coastal region, there were areas with high level accumulations in both ICESat and GRACE trend maps. In many high flow-speed glacier areas, negative mass change rates may be caused by dynamic ice flow discharges that have surpassed the snow accumulation. Overall, the mass change rate estimate in the LAS of 2004–2008 from the GRACE, ICESat and CHINARE data is 5.41 ± 4.59 Gt a−1, indicating a balanced to slightly positive mass trend. Along with other published results, this suggests that a longer-term positive mass trend in the LAS may have slowed in recent years. |
| first_indexed | 2024-04-10T04:42:09Z |
| format | Article |
| id | doaj.art-c1a3bd6d73fe4f52a50fe1bd3006bd56 |
| institution | Directory Open Access Journal |
| issn | 0022-1430 1727-5652 |
| language | English |
| last_indexed | 2024-04-10T04:42:09Z |
| publishDate | 2016-10-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Journal of Glaciology |
| spelling | doaj.art-c1a3bd6d73fe4f52a50fe1bd3006bd562023-03-09T12:40:17ZengCambridge University PressJournal of Glaciology0022-14301727-56522016-10-016288890410.1017/jog.2016.76A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observationsHUAN XIE0RONGXING LI1XIAOHUA TONG2XIAOLEI JU3JUN LIU4YUNZHONG SHEN5LEI CHEN6SHIJIE LIU7BO SUN8XIANGBIN CUI9YIXIANG TIAN10WENKAI YE11Center for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaPolar Research Institute of China, 451 Jinqiao Road, Shanghai 200136, ChinaPolar Research Institute of China, 451 Jinqiao Road, Shanghai 200136, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaCenter for Spatial Information Science and Sustainable Development, Tongji University, 1239 Siping Road, Shanghai 200092, China College of Surveying and Geo-Informatics, Tongji University, 1239 Siping Road, Shanghai 200092, ChinaWe present results of a regional comparative study of surface mass changes from 2004 to 2008 based on Gravity Recovery and Climate Experiment (GRACE), The Ice, Cloud and Land Elevation Satellite (ICESat) and CHINARE observations over the Lambert Glacier/Amery Ice Shelf system (LAS). Estimation of the ICESat mass change rates benefitted from the density measurements along the CHINARE traverse and a spatial density adjustment method for reducing the effect of spatial density variations. In the high-elevation inland region, a positive trend was estimated from both ICESat and GRACE data, which is in line with the CHINARE accumulation measurements. In the coastal region, there were areas with high level accumulations in both ICESat and GRACE trend maps. In many high flow-speed glacier areas, negative mass change rates may be caused by dynamic ice flow discharges that have surpassed the snow accumulation. Overall, the mass change rate estimate in the LAS of 2004–2008 from the GRACE, ICESat and CHINARE data is 5.41 ± 4.59 Gt a−1, indicating a balanced to slightly positive mass trend. Along with other published results, this suggests that a longer-term positive mass trend in the LAS may have slowed in recent years.https://www.cambridge.org/core/product/identifier/S0022143016000769/type/journal_articleGRACEICESatLambert-Amery Systemmass changes |
| spellingShingle | HUAN XIE RONGXING LI XIAOHUA TONG XIAOLEI JU JUN LIU YUNZHONG SHEN LEI CHEN SHIJIE LIU BO SUN XIANGBIN CUI YIXIANG TIAN WENKAI YE A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations Journal of Glaciology GRACE ICESat Lambert-Amery System mass changes |
| title | A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations |
| title_full | A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations |
| title_fullStr | A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations |
| title_full_unstemmed | A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations |
| title_short | A comparative study of changes in the Lambert Glacier/Amery Ice Shelf system, East Antarctica, during 2004–2008 using gravity and surface elevation observations |
| title_sort | comparative study of changes in the lambert glacier amery ice shelf system east antarctica during 2004 2008 using gravity and surface elevation observations |
| topic | GRACE ICESat Lambert-Amery System mass changes |
| url | https://www.cambridge.org/core/product/identifier/S0022143016000769/type/journal_article |
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