甘肃“十五”数字化水位观测资料分析及地震前兆监测效能评估  

Analysis of the Tenth Five Digital Observation Data of Underground Water Level and Evaluation of Earthquake Prediction Efficacy in Gansu

作　　者：张昱 刘小凤 邵辉成[2] 常千军 康庆强 

机构地区：[1]甘肃省地震局,兰州730000 [2]陕西省地震局,西安710068

出　　处：《地震研究》2010年第4期281-287,共7页Journal of Seismological Research

基　　金：中国地震局震情跟踪合同制定向工作任务"南北地震带北段大震危险性强化跟踪研究";甘东南-陕甘宁地震重点危险区及邻区强震危险性分析(2010010110)项目联合资助

摘　　要：通过对甘肃地区的"十五"数字化观测台网水位资料的年、月、日动态特征以及主要影响数字化水位资料的干扰因素等进行分析,发现大多数井点的资料连续可靠,特大地震的震后效应明显。目前数字化水位观测中存在的问题是个别井点的水位动态存在一些明显的突变和缺数。根据以往的震例总结,年变规律明显的井点,有可能在地震中期或中短期前兆异常监测中发挥一定的效能;观测资料日均值月动态和时均值日动态规律明显的井点,在地震短期或短临前兆监测中有可能发挥一定的效能。潮汐理论用于模拟观测资料的处理方法,也可以在数字化观测资料中应用。总体来说,甘肃地区"十五"数字化水位观测质量明显要高于"九五"台网的质量。This paper analyzed the data of＂The Tenth Five＂digital water level measurement system.We discussed the characteristics of year,month and day digital water level and application of digital data,and some maininterference factors in the measurement of digital water level.It was found that the data of most well points are reliable,where the post-seismic effect is very obvious.At present,the main problem in measuring digital water level is some significant abrupt shifts and omissions in dividual points.Judging from previous earthquake examples,well points with obvious annual variations may have some efficiency in monitoring short-term or short-impending precursor of earthquake.The theory of tides is suitable to process the analog observation data,and to process the digital data as well.In the main the quality of digital water level observation using＂The Tenth Five＂system has an advantage over＂The Ninth Five＂system in Gansu region.

关 键 词：数字化 水位 动态特征 甘肃地区 监测效能 

分 类 号：P315.723[天文地球—地震学]