地震学报2018，Vol.40Issue(1)：13-23,11.DOI:10.11939/jass.20170097
2016年日本熊本地震破裂时空过程联合反演
Joint inversion of teleseismic and co-seismic InSAR data for the rupture process of the 2016 Kumamoto earthquake in Japan
摘要
Abstract
On April 15,2016,a disastrous earthquake struck Kumamoto county in Japan.Aiming to further understand the complexity of the earthquake rupture in detail,we conduct a joint inversion of teleseismic waveforms and co-seismic InSAR data for the spatio-temporal rupture process of this earthquake.The results show that,the whole process lasted for about 25 s and released scalar moment up to 6.03 × 1019 N· m,corresponding to moment magnitude MW7.1.The major co-seismic slip distribution was centered in shallow region,and it was dominated by dextral strike.But the rupture had strong normal characteristics in the range of 0-5 km along the dip direction.The maximum co-seismic slip is about 4.9 m,and the major rupture patch was about 5-10 km away from the initial rupture point opposite to the strike direction.In the early stage (0-7 s),it ruptured toward to the shallow region along the dip direction,and ruptured bilaterally along strike direction;about 7 slater,it ruptured to ward to the northeast opposite to the strike direction.The joint inversion results suggest that the Kumamoto earthquake may rupture to the earth surface.关键词
2016年熊本地震/远场体波/同震InSAR资料/地震破裂过程/联合反演Key words
2016 Kumamoto earthquake/teleseismic body waveforms/co-seismic InSAR data/earthquake rupture process/joint inversion分类
天文与地球科学引用本文复制引用
蒋生淼,易磊,张旭,温扬茂..2016年日本熊本地震破裂时空过程联合反演[J].地震学报,2018,40(1):13-23,11.基金项目
中央公益类科研院所基本科研业务专项(DQJB16B17)资助. （DQJB16B17）
