地震学报（英文版）2004，Vol.17Issue(z1)：110-116,7.
Application of wavelet analysis to crustal deformation data processing
Application of wavelet analysis to crustal deformation data processing
摘要
Abstract
The time-frequency analysis and anomaly detection of wavelet transformation make the method irresistibly advantageous in non-stable signal processing. In the paper, the two characteristics are analyzed and demonstrated withsynthetic signal. By applying wavelet transformation to deformation data processing, we find that about 4 monthsbefore strong earthquakes, several deformation stations near the epicenter received at the same time the abnormalsignal with the same frequency and the period from several days to more than ten days. The GPS observation stations near the epicenter all received the abnormal signal whose period is from 3 months to half a year. These abnormal signals are possibly earthquake precursors.关键词
time-frequency analysis/anomaly detection/deformation data/earthquake precursorKey words
time-frequency analysis/anomaly detection/deformation data/earthquake precursor分类
天文与地球科学引用本文复制引用
张燕,吴云,刘永启,施顺英..Application of wavelet analysis to crustal deformation data processing[J].地震学报（英文版）,2004,17(z1):110-116,7.基金项目
Joint Seismological Science Foundation of China (604021) and National Natural Science Foundation of China(40074024). （604021）
