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DOI | 10.1029/2018GL081001 |
Intermediate-Magnitude Postseismic Slip Follows Intermediate-Magnitude (M 4 to 5) Earthquakes in California | |
Alwahedi, M. A.1,2; Hawthorne, J. C.3 | |
2019-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:7页码:3676-3687 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The magnitude of postseismic slip is useful for constraining physical models of fault slip. Here we examine the postseismic slip following intermediate-magnitude (M 4 to 5) earthquakes by systematically analyzing data from borehole strainmeters in central and northern California. We assess the noise in the data and identify 11 earthquakes that generated interpretable strain records. We estimate the earthquakes' postseismic to coseismic moment ratios by comparing the coseismic strain changes with strain changes induced by afterslip in the following 1.5 days. The median estimated postseismic moment is 0.45 times the coseismic moment, with a 90% confidence interval between 0.25 and 0.60. This postseismic moment is slightly larger than typically observed following large (M>6) earthquakes but smaller than observed following small (M 2 to 4) earthquakes. The intermediate-magnitude postseismic slip suggests a size dependence in the dynamics of earthquakes or in the properties of fault areas that surround earthquakes. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465836200012 |
WOS关键词 | SAN-ANDREAS FAULT ; CHI-CHI EARTHQUAKE ; SUMATRA-ANDAMAN ; JUAN-BAUTISTA ; CREEP EVENTS ; LANDERS EARTHQUAKE ; TIDAL CALIBRATION ; EPISODIC CREEP ; SLOW SLIP ; DEFORMATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182360 |
专题 | 气候变化 |
作者单位 | 1.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England; 2.UCL, Inst Risk & Disaster Reduct, London, England; 3.Univ Oxford, Dept Earth Sci, Oxford, England |
推荐引用方式 GB/T 7714 | Alwahedi, M. A.,Hawthorne, J. C.. Intermediate-Magnitude Postseismic Slip Follows Intermediate-Magnitude (M 4 to 5) Earthquakes in California[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(7):3676-3687. |
APA | Alwahedi, M. A.,&Hawthorne, J. C..(2019).Intermediate-Magnitude Postseismic Slip Follows Intermediate-Magnitude (M 4 to 5) Earthquakes in California.GEOPHYSICAL RESEARCH LETTERS,46(7),3676-3687. |
MLA | Alwahedi, M. A.,et al."Intermediate-Magnitude Postseismic Slip Follows Intermediate-Magnitude (M 4 to 5) Earthquakes in California".GEOPHYSICAL RESEARCH LETTERS 46.7(2019):3676-3687. |
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