滦县台YRY-2型钻孔应变仪两井孔固体潮观测的对比分析  

COMPARATIVE ANALYSIS OF TIDAL DATA RECORDED BY TWO YRY-2 BOREHOLE STRAINMETERS AT LUANXIAN STATION

作　　者：薄万举[1] 徐树心 池顺良 

机构地区：[1]国家地震局第一地形变监测中心 [2]河南省鹤壁市地震办公室

出　　处：《地震》1993年第2期47-54,共8页Earthquake

基　　金：国家地震局科学联合基金

摘　　要：本文介绍河北省滦县地震台两台YRY-2型钻孔应变仪的固体潮观测试验情况。对两口井的观测资料在数据处理过程中进行了多次调和分析计算。对不同方向的线应变及差应变观测资料进行了综合对比分析,结果表明:1.应变观测资料中含有较强的长趋势低频噪声和高频噪声,并且受气压的干扰明显。2.线应变受气压干扰比差应变高得多。3.两个井在各方向显示的主要潮汐波成份一致,为O_1、S_1,K_1、N_2、M_2、S_2波。4.经各种排除干扰方法的处理后,可得到较清晰的应变固体潮曲线和较为可信的应变固体潮调和分析结果。5.用一号井线应变计算出的差应变与二号井直接测到的差应变,两者的调和分析结果一致,两口井的固体潮观测起到了相互验证的作用。This paper introduced the observational and testing conditions of the solid tide of two YRY-2 borehole strainmeters at Luanxan Seismic station, Hebei province. Harmonic analysis and calculation of the observed data at the two wells are carried out for many times in the data processing. The authors analyzed the observational data of linear strain and differential strain of different directions comprehensively and camparatively. Results show: 1. there contain stronger long tendency low frequency noise and high frequency noise in the observed data and they are obviously interfered by air pressure; 2. the linear strain suffers much higher air-pressure interference than the differential strain; 3. the main tidal wave compositions shown at every direction of both wells are consistent, they are O1, S1, K1, N2, M2, S2 waves. 4. after processing through various removal disturbance methods, authors can get clearer strain-tide curves and more reliable harmonic analysis results of strain tide; 5. the harmonic analysis results of the differential strain calculated by linear strain in No.1 well and the differential strain measured directly in the No.2 well are consistent, both can be mutually verified.

关 键 词：钻孔应变仪 噪音 井孔 测震 固体潮 

分 类 号：P315.7[天文地球—地震学]