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  

Application of digital observation data of underground water level and evaluation of earthquake prediction efficacy in Gansu and its adjacent areas

作　　者：张昱 李春森 赵小茂[2] 王新[2] 李永强[3] 李春玲 

机构地区：[1]甘肃省地震局,甘肃兰州730000 [2]陕西省地震局,陕西西安710068 [3]青海省地震局,青海西宁810001

出　　处：《地震》2008年第3期103-109,共7页Earthquake

基　　金：国家科技支撑计划课题(2006BAC01B02-03-02)

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 Cll 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.

关 键 词：数字化 水位 动态特征 甘肃及邻区 监测效能 

分 类 号：P315.7[天文地球—地震学]