Seasonal terrestrial water load modulation of seismicity at the southeastern margin of the Tibetan Plateau constrained by GNSS and GRACE data
文献类型：期刊论文
| 作者 | She, Yawen3,4; Fu, Guangyu1; Xu, Changyi2 |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2022-05-19 |
| 卷号 | 230期号:3页码:1966-1979 |
| 关键词 | Hydrogeophysics Loading of the Earth Asia Induced seismicity |
| ISSN号 | 0956-540X |
| DOI | 10.1093/gji/ggac168 |
| 英文摘要 | The seasonal terrestrial water load modulation of seismicity is an important phenomenon to understand the mechanism behind earthquake triggering and nucleation. The presence of high-level seismicity and large seasonal water load amplitudes at the southeastern margin of the Tibetan Plateau provides a natural experimental environment for studying the modulation mechanism. The spatiotemporal distribution of the water load was inverted using Global Navigation Satellite System (GNSS) and Gravity Recovery and Climate Experiment (GRACE) data, and an earthquake catalogue (M >= 2.5) was declustered to obtain the background seismicity using the Epidemic Type Aftershock Sequences (ETAS) model. The Multichannel Singular-Spectrum Analysis (M-SSA) is adopted to the time-series of monthly averaged terrestrial water load and background seismicity rates, and the results show 1- and 2-yr periodicities in the seismicity rates and water load. The 1-yr periodicity in the seismicity rate is correlated with the rate of change of the monthly averaged water load. To evaluate the seasonal principal stress perturbations on the tectonic background stress orientations, the stress changes caused by the seasonal water load changes are projected onto the tectonic background stress field orientations constraining by 8 yr of earthquake focal mechanism solutions. The results show that the largest change of the seasonal principal stress perturbations is about 16 kPa. The number of excess earthquakes is evaluated with the background seismicity rates for discrete stress intervals. The results indicate a similar to 10 per cent increase in the seismicity rates that correlate with the rates of the minimum and mean principal stress perturbations. The results above can be explained by the model of harmonic stress perturbations on rate-and-state fault. Based on this model, the nucleation period of the seasonal seismicity should be less than 1 yr at the southeastern margin of the Tibetan Plateau. |
| WOS关键词 | EARTHQUAKE CATALOGS ; DEFORMATION ; GPS ; STORAGE ; STRAIN ; MODEL |
| 资助项目 | Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration[2020IEF0502] ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences[SKLGED2022-2-5] ; China Postdoctoral Science Foundation[2020M680618] ; National Science Foundation of China[41874003] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000798346300010 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; Special Fund of the Institute of Earthquake Forecasting, China Earthquake Administration ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science Foundation of China ; National Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105954]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Fu, Guangyu |
| 作者单位 | 1.China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.China Earthquake Adm, Inst Earthquake Forecasting, Beijing 100036, Peoples R China 4.Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Geodesy & Earths Dynam, Wuhan 430077, Peoples R China |
| 推荐引用方式 GB/T 7714 | She, Yawen,Fu, Guangyu,Xu, Changyi. Seasonal terrestrial water load modulation of seismicity at the southeastern margin of the Tibetan Plateau constrained by GNSS and GRACE data[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2022,230(3):1966-1979. |
| APA | She, Yawen,Fu, Guangyu,&Xu, Changyi.(2022).Seasonal terrestrial water load modulation of seismicity at the southeastern margin of the Tibetan Plateau constrained by GNSS and GRACE data.GEOPHYSICAL JOURNAL INTERNATIONAL,230(3),1966-1979. |
| MLA | She, Yawen,et al."Seasonal terrestrial water load modulation of seismicity at the southeastern margin of the Tibetan Plateau constrained by GNSS and GRACE data".GEOPHYSICAL JOURNAL INTERNATIONAL 230.3(2022):1966-1979. |
入库方式： OAI收割
来源：地质与地球物理研究所
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