A brief analysis of hypocenter location accuracy and its influencing factors
Earthquake location is fundamental to seismological research. However, there exists a supply contradiction between seismic location accuracy and the needs of seismological studies. Different studies require varying levels of accuracy in earthquake location. For example, studies on focal mechanisms a...
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Editorial Office of Reviews of Geophysics and Planetary Physics
2025-03-01
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| Series: | 地球与行星物理论评 |
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| Online Access: | https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2024-025 |
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| author | Fengxue Zhang Yu Li Yiping Chen |
| author_facet | Fengxue Zhang Yu Li Yiping Chen |
| author_sort | Fengxue Zhang |
| collection | DOAJ |
| description | Earthquake location is fundamental to seismological research. However, there exists a supply contradiction between seismic location accuracy and the needs of seismological studies. Different studies require varying levels of accuracy in earthquake location. For example, studies on focal mechanisms and crust-mantle structures demand accuracy at the kilometer level, while industrial activities and induced seismicity researches require accuracy at the hundred-meter level. Yet, the accuracy of earthquake locations provided by seismic monitoring networks is only within a few kilometers. Numerous earthquake localization methods have been optimized and improved from different perspectives, but their focuses vary. Overall, existing localization methods have not paid sufficient attention to the accuracy of earthquake positioning. In extensive earthquake localization practices, predecessors have developed several empirical rules for optimizing earthquake position accuracy. These empirical rules not only vary by region but also have specific applicability conditions, and they still need further optimization and refinement. This paper briefly analyzes the various factors influencing the accuracy of earthquake localization and conducts targeted research. It has achieved some progress in earthquake localization algorithms and the quality control of observational data. The study supplements the coupling relationship in earthquake localization by exploring the constraints among the velocity model, hypocenter location, and origin time. Additionally, the paper proposes the use of a stepwise elimination process in the earthquake localization workflow. |
| format | Article |
| id | doaj-art-21d24cdb94964d669091a9da20be86b1 |
| institution | Kabale University |
| issn | 2097-1893 |
| language | zho |
| publishDate | 2025-03-01 |
| publisher | Editorial Office of Reviews of Geophysics and Planetary Physics |
| record_format | Article |
| series | 地球与行星物理论评 |
| spelling | doaj-art-21d24cdb94964d669091a9da20be86b12024-11-15T09:48:52ZzhoEditorial Office of Reviews of Geophysics and Planetary Physics地球与行星物理论评2097-18932025-03-0156218219210.19975/j.dqyxx.2024-0252024-025A brief analysis of hypocenter location accuracy and its influencing factorsFengxue Zhang0Yu Li1Yiping Chen2Institute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaEarthquake location is fundamental to seismological research. However, there exists a supply contradiction between seismic location accuracy and the needs of seismological studies. Different studies require varying levels of accuracy in earthquake location. For example, studies on focal mechanisms and crust-mantle structures demand accuracy at the kilometer level, while industrial activities and induced seismicity researches require accuracy at the hundred-meter level. Yet, the accuracy of earthquake locations provided by seismic monitoring networks is only within a few kilometers. Numerous earthquake localization methods have been optimized and improved from different perspectives, but their focuses vary. Overall, existing localization methods have not paid sufficient attention to the accuracy of earthquake positioning. In extensive earthquake localization practices, predecessors have developed several empirical rules for optimizing earthquake position accuracy. These empirical rules not only vary by region but also have specific applicability conditions, and they still need further optimization and refinement. This paper briefly analyzes the various factors influencing the accuracy of earthquake localization and conducts targeted research. It has achieved some progress in earthquake localization algorithms and the quality control of observational data. The study supplements the coupling relationship in earthquake localization by exploring the constraints among the velocity model, hypocenter location, and origin time. Additionally, the paper proposes the use of a stepwise elimination process in the earthquake localization workflow.https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2024-025earthquake localizationhypocenter location accuracygrid search localizationobservational data qualitycoupling relationship within localization |
| spellingShingle | Fengxue Zhang Yu Li Yiping Chen A brief analysis of hypocenter location accuracy and its influencing factors 地球与行星物理论评 earthquake localization hypocenter location accuracy grid search localization observational data quality coupling relationship within localization |
| title | A brief analysis of hypocenter location accuracy and its influencing factors |
| title_full | A brief analysis of hypocenter location accuracy and its influencing factors |
| title_fullStr | A brief analysis of hypocenter location accuracy and its influencing factors |
| title_full_unstemmed | A brief analysis of hypocenter location accuracy and its influencing factors |
| title_short | A brief analysis of hypocenter location accuracy and its influencing factors |
| title_sort | brief analysis of hypocenter location accuracy and its influencing factors |
| topic | earthquake localization hypocenter location accuracy grid search localization observational data quality coupling relationship within localization |
| url | https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2024-025 |
| work_keys_str_mv | AT fengxuezhang abriefanalysisofhypocenterlocationaccuracyanditsinfluencingfactors AT yuli abriefanalysisofhypocenterlocationaccuracyanditsinfluencingfactors AT yipingchen abriefanalysisofhypocenterlocationaccuracyanditsinfluencingfactors AT fengxuezhang briefanalysisofhypocenterlocationaccuracyanditsinfluencingfactors AT yuli briefanalysisofhypocenterlocationaccuracyanditsinfluencingfactors AT yipingchen briefanalysisofhypocenterlocationaccuracyanditsinfluencingfactors |