2016年5月
Heterogeneous rheology controlled postseismic deformation of the 2011 Tohoku-Oki earthquake
GEOPHYSICAL RESEARCH LETTERS
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- 巻
- 43
- 号
- 10
- 開始ページ
- 4971
- 終了ページ
- 4978
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/2016GL068113
- 出版者・発行元
- AMER GEOPHYSICAL UNION
Using two-dimensional finite element modeling, we reproduced the observed postseismic deformation of the 2011 Tohoku-Oki earthquake. Our model, which accounts for the lithosphere-asthenosphere boundary and weak zones beneath volcanoes, was able to reproduce small-scale (<20km) perturbations in postseismic deformation observed by the dense geodetic network, such as local subsidence around Quaternary volcanoes. The inverted afterslip has a peak at the downdip limit of the main rupture region on the subducting plate interface, consistent with physical predictions. The combination of afterslip and viscoelastic relaxation in a heterogeneous rheology model explains the observations well, even on small scales.
- リンク情報
- ID情報
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- DOI : 10.1002/2016GL068113
- ISSN : 0094-8276
- eISSN : 1944-8007
- ORCIDのPut Code : 24227064
- Web of Science ID : WOS:000378347500039