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DOI | 10.1029/2019GL084123 |
Ross Ice shelf Icequakes Associated With Ocean Gravity Wave Activity | |
Chen, Z.1; Bromirski, P. D.1; Gerstoft, P.1; Stephen, R. A.2; Lee, W. S.3; Yun, S.3; Olinger, S. D.4; Aster, R. C.5; Wiens, D. A.6; Nyblade, A. A.7 | |
2019-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:15页码:8893-8902 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; South Korea |
英文摘要 | Gravity waves impacting ice shelves illicit a suite of responses that can affect ice shelf integrity. Broadband seismometers deployed on the Ross Ice Shelf, complemented by a near-icefront seafloor hydrophone, establish the association of strong icequake activity with ocean gravity wave amplitudes (A(G)) below 0.04 Hz. The Ross Ice Shelf-front seismic vertical displacement amplitudes (A(SV)) are well correlated with A(G), allowing estimating the frequency-dependent transfer function from gravity wave amplitude to icefront vertical displacement amplitude (T-GSV(f)). T-GSV(f) is 0.6-0.7 at 0.001-0.01 Hz but decreases rapidly at higher frequencies. Seismicity of strong icequakes exhibits spatial and seasonal associations with different gravity wave frequency bands, with the strongest icequakes observed at the icefront primarily during the austral summer when sea ice is minimal and swell impacts are strongest. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000483812500032 |
WOS关键词 | RIFT PROPAGATION ; TSUNAMI |
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/186038 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 2.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA; 3.Korea Polar Res Inst, Incheon, South Korea; 4.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 5.Colorado State Univ, Dept Geosci, Ft Collins, CO 80523 USA; 6.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA; 7.Penn State Univ, Dept Geosci, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Chen, Z.,Bromirski, P. D.,Gerstoft, P.,et al. Ross Ice shelf Icequakes Associated With Ocean Gravity Wave Activity[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(15):8893-8902. |
APA | Chen, Z..,Bromirski, P. D..,Gerstoft, P..,Stephen, R. A..,Lee, W. S..,...&Nyblade, A. A..(2019).Ross Ice shelf Icequakes Associated With Ocean Gravity Wave Activity.GEOPHYSICAL RESEARCH LETTERS,46(15),8893-8902. |
MLA | Chen, Z.,et al."Ross Ice shelf Icequakes Associated With Ocean Gravity Wave Activity".GEOPHYSICAL RESEARCH LETTERS 46.15(2019):8893-8902. |
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