摘要
利用三层厚壁筒组合模型,给出不同类型体应变的相互转换关系,分析模型参数变化对3类体应变仪观测的影响。通过对全国60多个台站的体应变观测资料分析,发现钻孔的气压系数与潮汐因子无简单对应关系。利用固体潮标定不同台站的体应变到统一系统的体应变,结果表明,多数台站存在体应变潮汐因子观测值比理论值明显偏小现象,推测可能与钻孔存在非完全耦合有关。
In this paper,based on the combined model of three thick wall cylinders,the mutual conversion formula between different types of borehole strain is given.The effect of model parameters on three types of borehole strain observation is analyzed.Through analysis of the strain data on more than 60 stations,it is found that there is no simple correspondence between barometric coefficient and tidal factor on the same station.By earth tide,the strain of different boreholes is calibrated into the unified system strain.The results indicated that many strain tidal factor observation were significantly smaller than the theoretical value. Therefore,that may be related to borehole incompletely coupling.
出处
《地震地磁观测与研究》
2014年第3期165-173,共9页
Seismological and Geomagnetic Observation and Research
基金
江苏省地震局青年科学基金项目(201302)
关键词
体应变
厚壁筒
固体潮
标定
耦合
borehole strain
thick wall cylinder
earth tide
calibration
coupling
