Authors
Han Yue, Zachary E Ross, Cunren Liang, Sylvain Michel, Heresh Fattahi, Eric Fielding, Angelyn Moore, Zhen Liu, Bo Jia
Publication date
2017/11
Journal
Journal of Geophysical Research: Solid Earth
Volume
122
Issue
11
Pages
9166-9183
Description
The 2016 Kumamoto earthquake sequence occurred on the Futagawa–Hinagu fault zone near the Aso volcano on Kyushu island. The sequence was initiated with two major (Mw  6.0) foreshocks, and the mainshock (Mw) occurred 25 h after the second major foreshock. We combine GPS, strong motion, synthetic aperture radar images, and surface offset data in a joint inversion to resolve the kinematic rupture process of the mainshock and coseismic displacement of the foreshocks. The joint inversion results reveal a unilateral rupture process for the mainshock involving sequential rupture of four major asperities. The slip area of the foreshocks and mainshock and the aftershock loci form a detailed complementary pattern. The mainshock rupture terminates near the rim of the caldera, leaving a ~10 km long gap of aftershocks. This area is characterized by high temperature and low shear wave velocity, density …
Total citations
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Scholar articles
H Yue, ZE Ross, C Liang, S Michel, H Fattahi… - Journal of Geophysical Research: Solid Earth, 2017