Extracting borehole strain precursors associated with the Lushan earthquake through principal component analysis

Annals Of Geophysics

Zining Yu¹  Kaiguang Zhu²  Chengquan Chi² 

[1] Key Laboratory of Geo-Exploration Instrumentation, Ministry of Education,;Key Laboratory of Geo-Exploration Instrumentation, Ministry of Education, Jilin University

关键词: Borehole strain;    Lushan earthquake;    Principal component analysis;    eigenvalue and eigenvector;    Earthquake precursor;   

DOI  :  10.4401/ag-7633

学科分类：地球化学与岩石

来源: Istituto Nazionale Di Geofisica E Vulcanologia

【 摘 要 】

A YRY-4 borehole strainmeter installed at the Guza Station recorded anomalous changes in borehole strain data preceding the Lushan earthquake on April 20, 2013 (UTC) ( =7.0). To identify earthquake-induced abnormal strain changes, we apply principal compo

【 授权许可】

CC BY