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| DOI | 10.1016/j.tecto.2020.228556 |
| Spatial distribution of earthquake potential along the Himalayan arc | |
| Sharma Y.; Pasari S.; Ching K.-E.; Dikshit O.; Kato T.; Malik J.N.; Chang C.-P.; Yen J.-Y. | |
| 发表日期 | 2020 |
| ISSN | 00401951 |
| 卷号 | 791 |
| 英文摘要 | To determine the spatial distribution of earthquake potential along the active Himalayan arc, we utilize GPS measurements and earthquake data. We derive horizontal velocity field and 2-D strain rates from a new set of 41 regional GPS stations along with 446 published velocities. We convert these strain rate tensors to geodetic moment rate build-up within 24 contiguous segments and compare to the seismic moment rate release derived from a reassessed earthquake catalog of 900 years. The geodetic to seismic moment rate ratio, an indicator of stored strain energy, varies from below unity to more than 50 in different segments. The estimated geodetic moment rate ranges from 1.7 × 1018 Nm/yr to 10.2 × 1018 Nm/yr, whereas the seismic moment rate ranges from 3.7 × 1016 Nm/yr to 5.1 × 1019 Nm/yr. This variation between the geodetic and seismic moment rate corresponds to a moment deficit rate of ~1.15×1017 Nm/yr to 7.97 × 1018 Nm/yr along various segments of the study region. The above moment deficit rate provides an equivalent earthquake potential of magnitude 5.7 − 8.2 in different segments. Specifically, the higher earthquake potential (Mw≥8.0) corresponds to the segments in the central seismic gap and the northeast part of Himalaya, whereas the lower earthquake potential (Mw<7.0) corresponds to the segments encompassing the rupture areas of recent large events. The present findings not only provide input constraints on the contemporary crustal deformation but also contributes to the time-dependent seismic hazard analysis along the Himalaya. © 2020 Elsevier B.V. |
| 关键词 | Earthquake potentialGeodetic strain rateGPS velocityHimalayaMoment deficit rate |
| 英文关键词 | Geodesy; Geodetic satellites; Spatial distribution; Strain energy; Strain rate; Velocity; Crustal deformations; Earthquake catalogs; Earthquake potential; GPS measurements; Horizontal velocity; Input constraints; Seismic hazard analysis; Strain rate tensors; Earthquakes; crustal deformation; earthquake catalogue; earthquake mechanism; GPS; mountain region; seismic moment; spatial distribution; strain rate; structural geology; tectonic setting; time dependent behavior; Himalayas |
| 语种 | 英语 |
| 来源期刊 | Tectonophysics
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/207876 |
| 作者单位 | Department of Mathematics, Birla Institute of Technology and Science, Pilani, India; Department of Geomatics, National Cheng Kung University, Taiwan; Department of Civil Engineering, Indian Institute of Technology Kanpur, India; Earlier at Earthquake Research Institute, The University of Tokyo, Japan; Presently at Hot Spring Research Institute of Kanagawa Prefecture, Japan; Department of Earth Sciences, Indian Institute of Technology Kanpur, India; Center for Space and Remote Sensing Research, National Central University, Taiwan; Department of Natural Resources and Environmental Studies, National Dong Hwa University, Taiwan |
| 推荐引用方式 GB/T 7714 | Sharma Y.,Pasari S.,Ching K.-E.,et al. Spatial distribution of earthquake potential along the Himalayan arc[J],2020,791. |
| APA | Sharma Y..,Pasari S..,Ching K.-E..,Dikshit O..,Kato T..,...&Yen J.-Y..(2020).Spatial distribution of earthquake potential along the Himalayan arc.Tectonophysics,791. |
| MLA | Sharma Y.,et al."Spatial distribution of earthquake potential along the Himalayan arc".Tectonophysics 791(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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