地震学报2012，Vol.34Issue(2)：157-170,14.DOI:10.3969/j.issn.0253-3782.2012.02.004
汶川震前几种低频事件波形分析
Analysis on a few kinds of low frequency events and their waveforms before Wenchuan earthquake
摘要
Abstract
This paper lists and analyzes a few kinds of low frequency events studied in foreign literature. By choosing broadband records at stations of Sichuan digital seismic network near main fault of the Wenchuan earthquake and band filtering these datum, we detected four similar low frequency events, I. E. , episodic tremor and slip events (ETS) , low frequency events (LFE) , deep low frequency events (DLF) and very low frequency events (VLF). Located examples confirm that several low frequency events occurred near the Longmen-shan fault, most of them are ETS and VLF and minority is DLF. We can not verify whether LFE events actually exist or not, because there are distant earthquakes at the same time. As a supplement to traditional earthquake catalog, low frequency events may provide us a new research line for exploring possible precursors and triggering mechanism of strong earthquakes.关键词
汶川地震/低频地震/震颤/低频震颤与滑移事件/深低频震动事件/超低频震动事件Key words
Wenchuan earthquake/ low frequency events/ tremor/ episodic tremor and slip events/ deep low frequency events/ very low frequency events分类
天文与地球科学引用本文复制引用
邓津,李鹏,马腾飞,赵凌云..汶川震前几种低频事件波形分析[J].地震学报,2012,34(2):157-170,14.基金项目
中国地震局地球物理研究所基本科研业务专项(DQJB11B02)和中国地震局地震预测研究所基本科研业务专项(02092407)资助. （DQJB11B02）
