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DOI | 10.1029/2019GL083997 |
Simultaneous Dependence of the Earthquake-Size Distribution on Faulting Style and Depth | |
Petruccelli, A.1,2; Gasperini, P.2; Tormann, T.1,3; Schorlemmer, D.4; Rinaldi, A. P.1; Vannucci, G.5; Wiemer, S.1 | |
2019-10-23 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Switzerland; Italy; Germany |
英文摘要 | We analyze two high-quality Southern Californian earthquake catalogues, one with focal mechanisms, to statistically model and test for dependencies of the earthquake-size distribution, the b values, on both faulting style and depth. In our null hypothesis, b is assumed constant. We then develop and calibrate one model based only on faulting style, another based only on depth dependence and two models that assume a simultaneous dependence on both parameters. We develop a new maximum-likelihood estimator corrected for the degrees of freedom to assess models' performances. Our results show that all models significantly reject the null hypothesis. The best performing is the one that simultaneously takes account of depth and faulting style. Our results suggest that differential stress variations in the Earth's crust systematically influence b values and that this variability should be considered for contemporary seismic hazard studies. Key Points We model the dependence of the b value on depth and tectonic style in Southern California Statistical tests reveal that faulting style affects the b value more than depth Simultaneous dependencies result with high statistical significance in the best data description |
英文关键词 | statistical seismology seismotectonics statistical modeling earthquake forecasting models evaluation seismic hazard assessment |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000491656700001 |
WOS关键词 | B-VALUE ; SEISMIC CYCLES ; MAGNITUDE ; STRESS ; CATALOG |
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/187766 |
专题 | 气候变化 |
作者单位 | 1.Swiss Fed Inst Technol, Swiss Seismol Serv, Zurich, Switzerland; 2.Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy; 3.PartnerRe, Zurich, Switzerland; 4.GFZ Potsdam, Helmholtz Ctr Potsdam, Potsdam, Germany; 5.Ist Nazl Geofis & Vulcanol, Bologna, Italy |
推荐引用方式 GB/T 7714 | Petruccelli, A.,Gasperini, P.,Tormann, T.,et al. Simultaneous Dependence of the Earthquake-Size Distribution on Faulting Style and Depth[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Petruccelli, A..,Gasperini, P..,Tormann, T..,Schorlemmer, D..,Rinaldi, A. P..,...&Wiemer, S..(2019).Simultaneous Dependence of the Earthquake-Size Distribution on Faulting Style and Depth.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Petruccelli, A.,et al."Simultaneous Dependence of the Earthquake-Size Distribution on Faulting Style and Depth".GEOPHYSICAL RESEARCH LETTERS (2019). |
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