当前位置: X-MOL 学术Geochemistry, Geophys. Geosystems › 论文详情
A Transient in Surface Motions Dominated by Deep Afterslip Subsequent to a Shallow Supershear Earthquake: The 2018 Mw7.5 Palu Case
Geochemistry, Geophysics, Geosystems ( IF 3.275 ) Pub Date : 2021-03-06 , DOI: 10.1029/2020gc009491
N. Nijholt, W. J. F. Simons, J. Efendi, D. A. Sarsito, R. E. M. Riva

The 2018 urn:x-wiley:15252027:media:ggge22473:ggge22473-math-0003 Palu earthquake is a remarkable strike‐slip event due to its nature as a shallow supershear fault rupture across several segments and a destructive tsunami that followed coseismic deformation. GPS offsets in the wake of the 2018 earthquake display a transient in the surface motions of northwest Sulawesi. A Bayesian approach identifies (predominantly aseismic) deep afterslip on and below the coseismic rupture plane as the dominant physical mechanism causing the cumulative, postseismic, surface displacements whereas viscous relaxation of the lower crust and poro‐elastic rebound contribute negligibly. We confirm a correlation between shallow supershear rupture and postseismic surface transients with afterslip activity in the zone below an interseismically locked fault plane where the slip rate tapers from zero to creeping.

中文翻译:

浅层超剪切地震后深后滑为主的瞬态表面运动:2018年Mw7.5 Palu壳

2018年 骨灰盒:x-wiley:15252027:media:ggge22473:ggge22473-math-0003帕卢地震是一个非凡的走滑事件,因为它的性质是跨几个段的浅层超剪切断裂以及同震变形之后的破坏性海啸。2018年地震后的GPS偏移显示了苏拉威西西北部的地表运动是短暂的。贝叶斯方法将同震破裂平面上和下方的深层滑移(主要是抗震)识别为造成累积的,震后地表位移的主要物理机制,而下地壳的粘性松弛和孔隙弹性回弹的贡献可忽略不计。我们确认了浅超剪切断裂与地震后表面瞬变之间的相关性,其间滑移率从零到蠕变逐渐减小,位于间震锁定断层平面下方的区域中,具有后滑活动。
更新日期:2021-04-08
全部期刊列表>>
2021中国学者有奖调研
JACS
材料科学跨学科高质量前沿研究
中国作者高影响力研究精选
虚拟特刊
屿渡论文,编辑服务
何川
清华大学
郭维
上海中医药大学
华东师范大学
北京大学许言
楚甲祥
西湖石航
上海交大
北理工
隐藏1h前已浏览文章
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
南开大学
张韶光
华辉
天合科研
x-mol收录
试剂库存
down
wechat
bug