Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab6b32 |
Detailed quantification of glacier elevation and mass changes in South Georgia | |
Farias-Barahona, David1; Sommer, Christian1; Sauter, Tobias1; Bannister, Daniel2,3; Seehaus, Thorsten C.1; Malz, Philipp1; Casassa, Gino4,5; Mayewski, Paul A.6; Turton, Jenny, V1; Braun, Matthias H.1 | |
2020-03-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2020 |
卷号 | 15期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; England; Chile; USA |
英文摘要 | Most glaciers in South America and on the Antarctic Peninsula are retreating and thinning. They are considered strong contributors to global sea level rise. However, there is a lack of glacier mass balance studies in other areas of the Southern Hemisphere, such as the surrounding Antarctic Islands. Here, we present a detailed quantification of the 21st century glacier elevation and mass changes for the entire South Georgia Island using bi-static synthetic aperture radar interferometry between 2000 and 2013. The results suggest a significant mass loss since the beginning of the present century. We calculate an average glacier mass balance of -1.04 0.09 m w.e.a(-1) and a mass loss rate of 2.28 0.19 Gt a(-1) (2000-2013), contributing 0.006 0.001 mm a(-1) to sea-level rise. Additionally, we calculate a subaqueous mass loss of 0.77 0.04 Gt a(-1) (2003-2016), with an area change at the marine and lake-terminating glacier fronts of -6.58 0.33 km(2) a(-1), corresponding to similar to 4% of the total glacier area. Overall, we observe negative mass balance rates in South Georgia, with the highest thinning and retreat rates at the large outlet glaciers located at the north-east coast. Although the spaceborne remote sensing dataset analysed in this research is a key contribution to better understanding of the glacier changes in South Georgia, more detailed field measurements, glacier dynamics studies or further long-term analysis with high-resolution regional climate models are required to precisely identify the forcing factors. |
英文关键词 | glacier mass balance elevation changes InSAR sub-antarctic glaciers |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000518644200001 |
WOS关键词 | NORTHERN PATAGONIAN ICEFIELD ; SEA-LEVEL RISE ; TANDEM-X ; ICE CAP ; BALANCE ; ANTARCTICA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279194 |
专题 | 气候变化 |
作者单位 | 1.Friedrich Alexander Univ Erlangen Nurnberg, Inst Geog, Erlangen, Germany; 2.British Antarctic Survey, Cambridge, England; 3.SATAVIA LTD, Cambridge, England; 4.Direcc Gen Aguas, Santiago, Chile; 5.Univ Magallanes, Punta Arenas, Chile; 6.Univ Maine, Climate Change Inst, Orono, ME USA |
推荐引用方式 GB/T 7714 | Farias-Barahona, David,Sommer, Christian,Sauter, Tobias,et al. Detailed quantification of glacier elevation and mass changes in South Georgia[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(3). |
APA | Farias-Barahona, David.,Sommer, Christian.,Sauter, Tobias.,Bannister, Daniel.,Seehaus, Thorsten C..,...&Braun, Matthias H..(2020).Detailed quantification of glacier elevation and mass changes in South Georgia.ENVIRONMENTAL RESEARCH LETTERS,15(3). |
MLA | Farias-Barahona, David,et al."Detailed quantification of glacier elevation and mass changes in South Georgia".ENVIRONMENTAL RESEARCH LETTERS 15.3(2020). |
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