Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086178 |
Glacial Earthquakes and Precursory Seismicity Associated With Thwaites Glacier Calving | |
Winberry, J. Paul1; Huerta, Audrey D.1; Anandakrishnan, Sridhar2; Aster, Richard C.3; Nyblade, Andrew A.2; Wiens, Douglas A.4 | |
2020-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We observe two (similar to M-S 3) long-period (10-30 s) seismic events that originate from the terminus of Thwaites Glacier, Antarctica. Serendipitous acquisition of satellite images confirm that the seismic events were glacial earthquakes generated during the capsizing of icebergs. The glacial earthquakes were preceded by 6 days of discrete high-frequency seismic events that can be observed at distances exceeding 250 km. The high-frequency seismicity displays an increasing rate of occurrence, culminating in several hours of sustained tremor coeval with the long-period events. A series of satellite images collected during this precursory time period show that the high-frequency events and tremor are the result of accelerating growth of ancillary fractures prior to the culminating calving event. This study indicates that seismic data have the potential to elucidate the processes by which Thwaites Glacier discharges into the ocean, thus improving our ability to constrain future sea level rise. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529107400028 |
WOS关键词 | AMUNDSEN SEA EMBAYMENT ; ICE ; ANTARCTICA ; MOTION ; GREENLAND ; BAND |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/279613 |
专题 | 气候变化 |
作者单位 | 1.Cent Washington Univ, Dept Geol Sci, Ellensburg, WA 98926 USA; 2.Penn State Univ, Dept Geosci, University Pk, PA 16802 USA; 3.Colorado State Univ, Dept Geosci, Ft Collins, CO 80523 USA; 4.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63110 USA |
推荐引用方式 GB/T 7714 | Winberry, J. Paul,Huerta, Audrey D.,Anandakrishnan, Sridhar,et al. Glacial Earthquakes and Precursory Seismicity Associated With Thwaites Glacier Calving[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(3). |
APA | Winberry, J. Paul,Huerta, Audrey D.,Anandakrishnan, Sridhar,Aster, Richard C.,Nyblade, Andrew A.,&Wiens, Douglas A..(2020).Glacial Earthquakes and Precursory Seismicity Associated With Thwaites Glacier Calving.GEOPHYSICAL RESEARCH LETTERS,47(3). |
MLA | Winberry, J. Paul,et al."Glacial Earthquakes and Precursory Seismicity Associated With Thwaites Glacier Calving".GEOPHYSICAL RESEARCH LETTERS 47.3(2020). |
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