当前位置: X-MOL 学术Geomat Nat. Hazards Risk › 论文详情
Spatial and temporal b-value precursors preceding the 2008 Wenchuan, China, earthquake (Mw = 7.9): implications for earthquake prediction
Geomatics, Natural Hazards and Risk ( IF 3.333 ) Pub Date : 2020-06-29 , DOI: 10.1080/19475705.2020.1784297
Jie Chen; Shoubiao Zhu

Abstract The sudden and unexpected Wenchuan earthquake (Mw = 7.9) occurred on the Longmen Shan Fault without any definite precursors. Therefore, a new computing strategy of b-values was applied in the study area around the epicenter of the Wenchuan mainshock, which is divided into nine circular sub-regions with a radius of 50 km uniformly distributed in space, ignoring geological structures. Then the temporal mapping of b-values is performed at each sub-region. The simulated results show that, at one sub-region where the Wenchuan shock is located, the b-value increased to ∼1.25 in 2002 and was almost unchanged for over five years until 2007. But, the b-value dropped to ∼0.5 in Nov. 2007 and remained the same for about three months. Then, b-value increased again since March 2008, and on May 12, 2008, the Wenchuan mainshock occurred. Indeed, according to previous results, this pattern of b-variations is a typical precursor for major earthquakes, which has not been discovered by many retrospect studies for the Wenchuan earthquake. Therefore, this study, which may capture subtle precursors on b-variations for major earthquakes, is significant for earthquake prediction and seismic hazard assessment.
更新日期:2020-06-29

 

全部期刊列表>>
材料学研究精选
Springer Nature Live 产业与创新线上学术论坛
胸腔和胸部成像专题
自然科研论文编辑服务
ACS ES&T Engineering
ACS ES&T Water
屿渡论文,编辑服务
杨超勇
周一歌
华东师范大学
南京工业大学
清华大学
中科大
唐勇
跟Nature、Science文章学绘图
隐藏1h前已浏览文章
中洪博元
课题组网站
新版X-MOL期刊搜索和高级搜索功能介绍
ACS材料视界
x-mol收录
福州大学
南京大学
王杰
左智伟
湖南大学
清华大学
吴杰
赵延川
中山大学化学工程与技术学院
试剂库存
天合科研
down
wechat
bug