甘肃及邻区数字化水位观测资料的应用与地震监测效能评估
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摘要
甘肃及其附近地区已建成的数字化水位观测点共有12个,其中模拟与数字化观测同时运行的只有甘肃平凉一个测点。文中分析了数字化水位的年、月、日动态特征以及数字化资料的应用。分析了主要影响数字化水位资料的干扰因素,分析结果发现,数字化水位观测中目前较为突出的问题是水位动态中存在较大幅度的脉冲和突变。根据以往的震例总结,认为有可能识别出破年变为标志的中期前兆异常,以阶变和脉冲为特征的短期异常很难识别。潮汐理论用于模拟观测资料的处理方法,仍然可以在数字化观测资料中应用。
12 digital observation stations of water level have been set up in Gansu and its adjacent areas. The Pingliang C11 well is uniquely observed with digital data and simulation at the same time. We analyze dynamic characteristics of year, month and day digital water level and application of digital data. The interfere factors that affect digital data of water level are also analyzed. The results show that prominent problem is sudden change and pulse in digital data of water level. According to summation of earthquake cases, we can identify the intermediate-term precursory anomaly in breaking the annual variation. It is difficult to identify short time precursory anomaly in sudden change and pulse. We processed the simulation water level data by using the tide theory, and indicating that this theory can be applied to process the digital observation data.
12 digital observation stations of water level have been set up in Gansu and its adjacent areas. The Pingliang C11 well is uniquely observed with digital data and simulation at the same time. We analyze dynamic characteristics of year, month and day digital water level and application of digital data. The interfere factors that affect digital data of water level are also analyzed. The results show that prominent problem is sudden change and pulse in digital data of water level. According to summation of earthquake cases, we can identify the intermediate-term precursory anomaly in breaking the annual variation. It is difficult to identify short time precursory anomaly in sudden change and pulse. We processed the simulation water level data by using the tide theory, and indicating that this theory can be applied to process the digital observation data.
引文
[1]张素欣,张子广,刘俊明,等.数字化水位观测资料的应用与研究[J].地震,2002,22(4):89-98.
[2]唐九安,常千军,白亚平,等.甘18井水位观测结果与景泰地震[J].地震地磁观测与研究,1995,16(3):56-61.
[3]唐九安,白亚平,杨淑英,等.甘06井水位潮汐参数的震前中期异常[J].地震,1993,13(6):21-28.
[4]车用太,赵文忠,鱼金子,等.京津冀地区井水位的数字化观测及其地震前兆监测效能评估[J].地震,2006,26(4):103-111.
[2]唐九安,常千军,白亚平,等.甘18井水位观测结果与景泰地震[J].地震地磁观测与研究,1995,16(3):56-61.
[3]唐九安,白亚平,杨淑英,等.甘06井水位潮汐参数的震前中期异常[J].地震,1993,13(6):21-28.
[4]车用太,赵文忠,鱼金子,等.京津冀地区井水位的数字化观测及其地震前兆监测效能评估[J].地震,2006,26(4):103-111.
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