| DOI: | 10.1002/2016GL067773
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| 论文题名: | Ongoing deformation of Antarctica following recent Great Earthquakes |
| 作者: | King M.A.; Santamariá-Gómez A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9312
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| EISSN: | 1944-9043
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| 出版年: | 2016
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| 卷: | 43, 期:5 | | 起始页码: | 1918
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| 结束页码: | 1927
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| 语种: | 英语
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| 英文关键词: | DORIS
; glacial isostatic adjustment
; GPS
; postseismic deformation
; viscoelastic deformation
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| Scopus关键词: | Earthquakes
; Geodesy
; Geophysics
; Glacial geology
; Global positioning system
; Viscoelasticity
; DORIS
; Further deformations
; Glacial isostatic adjustment
; Glacial Isostatic Adjustments
; Intraplate earthquakes
; Postseismic deformation
; Three-dimensional deformations
; Viscoelastic deformation
; Deformation
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| 英文摘要: | Antarctica's secular motion is thought to be almost everywhere governed by horizontal rigid plate rotation plus three-dimensional deformations due to past and present changes in ice ocean loading, known as glacial isostatic adjustment (GIA). We use geodetic data to investigate deformation following the 1998 M ~8.2 Antarctic intraplate Earthquake and show sustained three-dimensional deformation along East Antarctica's coastline, 600 km from the rupture location. Using a model of viscoelastic deformation, we are able to match observed northward velocity changes, and either east or height, but not all three directions simultaneously, apparently partly due to lateral variations in mantle rheology. Our modeling predicts that much of Antarctica may still be deforming, with further deformation possible from the 2004 M 8 Macquarie Ridge Earthquake. This previously unconsidered mode of Antarctic deformation affects geodetic estimates of plate motion and GIA; its viscous nature raises the prospect of further present-day deformation due to earlier Great Earthquakes. © 2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959906336&doi=10.1002%2f2016GL067773&partnerID=40&md5=a6907798b5f810d16f194390a71e63d0
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/10275
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Surveying and Spatial Sciences, School of Land and Food, University of Tasmania, Hobart, Tasmania, Australia
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| Recommended Citation: | |
King M.A.,Santamariá-Gómez A.. Ongoing deformation of Antarctica following recent Great Earthquakes[J]. Geophysical Research Letters,2016-01-01,43(5).
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