| 摘要: |
| 为加强川南泸州区域的地震监测能力，新建15个流动测震台站，与泸州和荣昌2个固定台站形成泸州台网。根据《地震震级的规定GB17740—2017》，计算了泸州台网的震级监测能力，并通过实际地震事件的统计分析，验证了震级监测能力计算结果的准确性和合理性。基于D值理论，计算了泸州台网在研究区域的震中定位误差和震源深度定位误差，对比8个合成事件的定位结果，验证了台网的理论定位误差在一定范围内的准确性。对于ML0.5监测能力内的区域，定量分析了台网对于0.5级地震事件的理论定位误差水平，说明理论震级监测能力和理论定位误差计算相结合的应用合理可行。 |
| 关键词: 测震台网 监测能力 D值理论 |
| DOI： |
| 分类号:P315 |
| 基金项目:中石油项目（XNS25JS2019-57-02）、四川省中央引导地方科技发展专项项目（2020ZYD026）和四川省地震局科技创新团队（201901）共同资助 |
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| Study on the Earthquake Monitoring Capacity of Seismic Network in Luzhou Area of Sichuan Province |
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Yu Yangyang, Dai Shigui, Du Yao, Wang Yuxi, Zhuang Yuanxu
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Sichuan Earthquake Agency, Chengdu 610041, China
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| Abstract: |
| In order to strengthen the earthquake monitoring capability of Luzhou region in south Sichuan Province,15 seismic stations are newly built,plus two fixed stations,forming Luzhou seismic monitoring network. According to the national standard of “Provisions on Earthquake Magnitude GB7740—2017”,the magnitude monitoring capability of Luzhou seismic network is calculated. The accuracy and rationality of the calculation results of magnitude monitoring capability are verified by the statistical analysis of actual earthquake events. Based on the D-value theory,the epicenter errors and source depth errors of Luzhou seismic network in the study area are calculated. Compared with the positioning results of 8 synthetic events,it shows that the theoretical positioning error of the network is accurate within a certain range. For the area within the ML0.5 monitoring capacity,the theoretical positioning errors of the network for the earthquake events of ML 0.5 magnitude is quantitatively analyzed. It is reasonable and feasible to combine theoretical magnitude monitoring capability with theoretical positioning error calculation. |
| Key words: Seismic network Monitoring capability Theory D-value |
