新沂台地电场与地磁场、连云港台体应变的日变化分析  

Study on the Daily Variation of the Geoelectric Field and the Geomagnetic Field at Xinyi Station and the Volume Strain at Lianyungang Station

作　　者：李飞[1] 韩晓飞[2] 孙雷[3] 杨冯威[1] 纪加迎[1] 

机构地区：[1]江苏省地震局新沂地震台,江苏新沂221400 [2]陕西省地震局监测中心,陕西西安710068 [3]江苏省地震局连云港地震台,江苏连云港222061

出　　处：《地震研究》2011年第4期457-465,565,共9页Journal of Seismological Research

摘　　要：对新沂地震台地电场与地磁场H分量、连云港地震台体应变进行日变化对比分析,结果表明:新沂台地电场变化受地磁场、固体潮变化的共同作用,其中地电场NS向的变化比地磁场H分量的变化略微滞后,同时夹杂固体潮的作用,其日变形态以双峰单谷为主,还存在双峰双谷、近似三峰三谷形态。EW向日变形态变化与固体潮的变化形态相似,基本都为双峰双谷形态。此外,地电场还存在较明显的季节差异。最后讨论了新沂台地电场变化可能的形成机制。A Comparative analysis of the spectrum of quiet-day geoelectric field and the H component of geomagnetic field at Xinyi Seismic Station, and the volume strain data at Lianyungang Seismic Station showed that the geoelectric field in which Xinyi Station lies is the result from the geomagnetic field and earth tide. The variation of NS component of geoelectric field lags a little behind the variation of H component of magnetic field. Meanwhile, it included the effect of solid tide. The daily variation of NS component of geoelectric field showed doub- le peaks and one valley, or double peaks and double valley, or three peaks and three valleys. The variation of EW component of geoelectric field showed double peaks and double valley and was similar with the variation of the form of earth tide. Moreover, the geoelectfic field in which the Xinyi Station lies varied with the season. Finally, the mechanism of the variation of geoelectric field in which Xinyi Station lies was discussed.

关 键 词：地电场 地磁场 固体潮 形成机制 新沂地震台 

分 类 号：P315.72[天文地球—地震学]