西北地震学报2011，Vol.33Issue(1)：84-90,7.
六合体应变干扰因素与地震短临异常特征研究
Research on the Disturbance in Volume Strain Data at Liuhe Seismic Station and Its Short-Imminent Abnormality Characteristics
摘要
Abstract
Based on the digital observation data of borehole volume strain at Liuhe seismic station near Nanjing city, Jiangsu province, from 2003 to 2008, the main disturbance factors as atmospheric pressure and rainfall are analyzed, and the short-imminent abnormality characteristics of the volume strain for 3 earthquakes in the range of predict efficiency are discussed. The results show that the atmospheric pressure in short period affect strongly to value of strain with synchronization on time, the positive correlation coefficient is 0.6～0. 7. The effect of rainfall to the strain is complicate, depends on the process, duration time and volume of rain. Only rainfall accumulate to certain volume the solid tide can be distorted. But we still found some features between rainfall and volume strain. The volume strain at Liuhe station had significant short-imminent abnormalies in 1～2 months before regional moderate-strong earthquakes.关键词
江苏六合地震台/钻孔体应变/气压/降雨/干扰/短临异常特征Key words
Liuhe seismic station in Jiangsu province/ Borehole volume strain/ Atmospheric pressure/ Rainfall/ Disturbance/ Short-imminent abnormality分类
天文与地球科学引用本文复制引用
郑江蓉,徐徐,王俊,江昊琳..六合体应变干扰因素与地震短临异常特征研究[J].西北地震学报,2011,33(1):84-90,7.基金项目
江苏省科技厅社会发展项目(BS2006085) （BS2006085）
国家自然科学基金(40901272) （40901272）
