Monthly GRACE detection of coseismic gravity change associated with 2011 Tohoku-Oki earthquake using northern gradient approach
文献类型：期刊论文
| 作者 | Li, Jin1,2 ; Shen, Wen-Bin1,3
|
| 刊名 | EARTH PLANETS AND SPACE
 |
| 出版日期 | 2015-02-24 |
| 卷号 | 67期号:1页码:29 |
| 关键词 | Monthly GRACE solution Coseismic gravity change Northern gravity gradient Dislocation model Tohoku-Oki earthquake |
| 英文摘要 | We demonstrate that the coseismic gravitational changes due to the 2011 M-w = 9.0 Tohoku-Oki earthquake are detectable by GRACE with only 1-month data after the earthquake, which is also supported by a simulation test using the seismic-signal-contained observations synthesized with the signals of a dislocation model prediction. The commonly used destriping to filter correlated errors in GRACE coefficients tends to distort the true coseismic signals in both amplitude and spatial pattern. In order to better retrieve coseismic gravitational signals, we apply a northern gravity gradient approach with the filter of spatial averaging and without destriping. The coseismic northern gravity gradient changes of Tohoku-Oki earthquake are extracted from the monthly data of April 2011, which reveal a positive-negative-positive spatial pattern and agree with the model prediction. The northern gradient approach provides an efficient means to detect coseismic signals and potentially constrain fault slip models with large-scale gravitational changes using limited time span of monthly GRACE solutions. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geosciences, Multidisciplinary |
| 研究领域[WOS] | Geology |
| 关键词[WOS] | SUMATRA-ANDAMAN EARTHQUAKE ; PACIFIC COAST ; VISCOELASTIC RELAXATION ; EARTHS OBLATENESS ; GPS DATA ; DEFORMATION ; SURFACE ; SLIP ; DISLOCATION ; HYPOCENTER |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000351347500001 |
| 公开日期 | 2015-08-18 |
| 源URL | [http://119.78.226.72/handle/331011/18221]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Wuhan Univ, Sch Geodesy & Geomat, Dept Geophys, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jin,Shen, Wen-Bin. Monthly GRACE detection of coseismic gravity change associated with 2011 Tohoku-Oki earthquake using northern gradient approach[J]. EARTH PLANETS AND SPACE,2015,67(1):29. |
| APA | Li, Jin,&Shen, Wen-Bin.(2015).Monthly GRACE detection of coseismic gravity change associated with 2011 Tohoku-Oki earthquake using northern gradient approach.EARTH PLANETS AND SPACE,67(1),29. |
| MLA | Li, Jin,et al."Monthly GRACE detection of coseismic gravity change associated with 2011 Tohoku-Oki earthquake using northern gradient approach".EARTH PLANETS AND SPACE 67.1(2015):29. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。