选取2016—2020年宁陕地震台TJ-Ⅱ型体积式钻孔应变仪观测资料,基于观测质量和映震能力,系统分析应变仪运行状况及地震监测效能。结果表明:该台体应变观测资料质量整体较好,但数据连续率及完整率尚有待提升;体应变仪映震能力较强,可记录国内MS≥7.0和国外MS≥7.4地震;同震形变响应分析结果表明,同震响应最大变幅与震中距满足A = aeblg D的负相关关系,与震级满足A = aebM的正相关关系。
Based on the observation data of TJ-Ⅱ volume borehole strain meter at Ningshan Seismic Station from 2016 to 2020,the operation status and earthquake monitoring efficiency were systematically analyzed from observation quality and earthquake-reflecting capability.The results show that the quality of observation data of Ningshan volume borehole strain meter is better,but the continuity and integrity of observation data need to be further improved;Ningshan volume borehole strain meter had strong earthquake-reflecting capability,all the earthquakes with MS ≥ 7.0 in China and MS ≥ 7.4 outside China can be recorded;the co-seismic response results show that there is a negative correlation between the maximum response amplitude and epicentral distance,and a positive correlation between the maximum response amplitude and magnitude.
2022,43(3): 74-80 收稿日期:2022-2-9
DOI:10.3969/j.issn.1003-3246.2022.03.012
基金项目:陕西省地震局启航与创新课题(项目编号:QC202009)
作者简介:张雪娟(1990-),女,硕士,助理工程师,主要从事地震监测与数据分析工作。E-mail:2235470499@qq.com
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