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2014GL061735.pdf | 1.6 MB | Adobe PDF | 見る/開く |
タイトル: | Afterslip and viscoelastic relaxation following the 2011 Tohoku-oki earthquake (Mw9.0) inferred from inland GPS and seafloor GPS/Acoustic data |
著者: | Yamagiwa, Shuji Miyazaki, Shin'ichi Hirahara, Kazuro Fukahata, Yukitoshi https://orcid.org/0000-0002-1009-7366 (unconfirmed) |
著者名の別形: | 宮崎, 真一 |
発行日: | 14-Jan-2015 |
出版者: | American Geophysical Union |
誌名: | Geophysical Research Letters |
巻: | 42 |
号: | 1 |
開始ページ: | 66 |
終了ページ: | 73 |
抄録: | We simultaneously estimate 2.5 years of afterslip and viscoelastic relaxation, as well as coseismic slip, for the 2011 Tohoku-oki earthquake. Displacements at inland GPS and seafloor GPS/Acoustic stations are inverted using viscoelastic Green's functions for a model with an upper elastic layer and lower viscoelastic substrate. The result shows that afterslip is isolated from the rupture area and possibly asperities of historical earthquakes and has almost decayed by 10 September 2013, 2.5 years after the main shock. The inversion result also suggests that observed landward postseismic displacements at the seafloor GPS/Acoustic stations are caused by the viscoelastic relaxation, whereas trenchward displacements at inland stations are mainly an elastic response to afterslip. |
著作権等: | ©2014. American Geophysical Union. 許諾条件により本文ファイルは2015-07-14に公開. |
URI: | http://hdl.handle.net/2433/198595 |
DOI(出版社版): | 10.1002/2014GL061735 |
出現コレクション: | 学術雑誌掲載論文等 |
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