文章基本信息

标题：Crustal Deformation Caused by the 2016 Kumamoto Earthquake Revealed by GEONET
本地全文：下载
作者：Satoshi KAWAMOTO, Yohei HIYAMA, Reiko KAI, Fumio SUGA, Kazunori YAMAGUCHI, Tomoaki FURUYA, Satoshi ABE ; Naofumi TAKAMATSU
期刊名称：Bulletin of the Geographical Survey Institute
印刷版ISSN：0373-7160
出版年度：2016
卷号：64
页码：27-33
出版社：Geographical Survey Institute / Ministry of Land, Infrastructure and Transport
摘要：GNSS observation over the area of the 2016 Kumamoto Earthquake (April 14-16, 2016) reveals coseismicdeformations of over 10 centimeters caused by the two large foreshocks and of ~ 1 meter caused by the mainshock aswell as a postseismic deformation of up to a few centimeters. Large displacements are concentrated around Futagawa-Hinagu fault zone which is a known active fault in Kyushu Island. Kinematic positioning results imply the two largeforeshocks initiated a rupture on the northern part of the Hinagu fault segment, then a rupture neighboring thesouthern part of the segment. The postseismic deformations that followed seem to be similar to the pattern of coseismicdeformation, however, they are widely distributed. The sequence of earthquakes caused significant distortion in theJapanese geodetic datum around the focal area, but GEONET observation enabled a rapid response. Furthermore,it is believed the observation data provided by GEONET will make a significant contribution to understand the faultproperty along the active fault zone