CAJ | 학술논문

对连云港地震台钻孔体应变2009年1月—2013年12月数字化观测资料与气压、水位、降雨的影响进行相关分析,并进行潮汐因子M2波、周日波变化分析,获得地震前形变临震异常特征.结果表明:①气压变化以短周期正相关干扰为主,在时间上表现为准同步变化;体应变和水位变化具有较好的准同步性;降雨过程、降雨量及降雨时间等与体应变密切相关;②当地下介质性质发生变化时,固体潮发生畸变,潮汐因子变化可作为取得地震前兆的有效途径之一.
대련운항지진태찬공체응변2009년1월—2013년12월수자화관측자료여기압、수위、강우적영향진행상관분석,병진행조석인자M2파、주일파변화분석,획득지진전형변림진이상특정.결과표명:①기압변화이단주기정상관간우위주,재시간상표현위준동보변화;체응변화수위변화구유교호적준동보성;강우과정、강우량급강우시간등여체응변밀절상관;②당지하개질성질발생변화시,고체조발생기변,조석인자변화가작위취득지진전조적유효도경지일.
In this paper, the correlation between the digital observation data of atmospheric pressure, groundwater lever, rainfall and borehole body strain at Lianyungang Seismic Station during 2009.1-2013.12 is analyzed. Besides, the changes of M2 wave of tidal factor, diurnal wave is analyzed and the impending earthquake anomaly characteristics of body strain before an earthquake is obtained. The result shows that,①The change of atmospheric pressure is mainly positive correlation with body strain in short period and they show the nearly synchronous changing; The body strain and groundwater lever have well synchronization; Rainfall process, rainfall, rainfall time is closely relative to body strain. ②When character of underground medium changes,solid tide distortion happens, the change of tidal factor can be an effective way to get the earthquake precursors.