Complex Ruptures of the 11 April 2011 Mw 6.6 Iwaki Earthquake Triggered by the 11 March 2011 Mw 9.0 Tohoku Earthquake, Japan
Complex Ruptures of the 11 April 2011 Mw 6.6 Iwaki Earthquake Triggered by the 11 March 2011 Mw 9.0 Tohoku Earthquake, Japan
复制标题
2011 年 4 月 11 日日本东北 9.0 级地震引发的 2011 年 4 月 11 日 6.6 级磐城地震的复杂破裂
DOI:
10.1785/0120120140
复制
发表时间:
2013
影响因子:
3
通讯作者:
M. Hashimoto
中科院分区:
文献类型:
--
作者:
Y. Fukushima;Y. Takada;M. Hashimoto
Abstract After the 11 March 2011 M w 9.0 Tohoku earthquake, Japan, a swarm of shallow normal‐faulting earthquakes was triggered in a localized region beneath the border between Fukushima and Ibaraki prefectures in eastern Honshu. Here we examine the coseismic displacement field and a fault model of the largest event of the swarm, the 11 April 2011 M w 6.6 Iwaki earthquake. Radar interferometry applied to data of the Japanese ALOS satellite reveals complex ruptures associated with the Iwaki earthquake. In particular, the interferogram clearly shows multiple surface ruptures along each of the subparallel Yunodake and Itozawa faults. The slip distributions on these faults, as estimated by inverting the interferogram, suggest that the faults dip 60°–70° westward and that slip on the Itozawa fault extended to a splay fault at depths shallower than about 5 km. Our results indicate that the highland area west of the Itozawa fault was downthrown by up to 2.4 m during the Iwaki earthquake. Online Material: Original and de‐trended interferograms over a wider area.
登录
查看更多内容
DOI:
10.5047/eps.2011.06.014
发表时间:
2011-09
期刊:
Earth, Planets and Space
影响因子:
--
作者:
A. Kato;S. Sakai;K. Obara
通讯作者:
A. Kato;S. Sakai;K. Obara
影响因子:
5.2
作者:
S. Toda;R. Stein;Jian Lin
通讯作者:
S. Toda;R. Stein;Jian Lin
DOI:
--
发表时间:
2008
期刊:
Earth Planets. & Space 60
影响因子:
--
作者:
Aoki;Y.;M. Furuya;T. Kato
通讯作者:
T. Kato
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Choong Geun Lee;V. G. Moshnyaga and K. Hashimoto;宮田康治
通讯作者:
宮田康治