地震地磁观测与研究Issue(3)：159-164,6.DOI:10.3969/j.issn.1003-3246.2014.03/04.026
乾陵地震台钻孔体应变张性突跳异常分析
Analyzing the anomaly of the extensional strain steps recorded by borehole dilatometer at Qianling Seismic Station
摘要
Abstract
The unusually extensional strain steps with large amplitudes were repeatedly recorded by dilatometer at Qianling Seismic Station from February 2012 to June 2012.The Hilbert-Huang transform (HHT)is used to obtain the characteristics of Hilbert marginal spectra of these strain anomalies.Then,we further compared the analytical result to the Hilbert mar-ginal spectra of the disturbed strain changes induced by power mismatching recorded at Changqing Seismic Station.Analytical results generally show that their characteristics of Hilbert marginal spectra have a good agreement.This suggests that the strain anomaly ob-served at Qianling Seismic Station was principally caused by power problem.关键词
HHT/边际谱/张性突跳/钻孔体应变/电源干扰Key words
Hilbert-Huang transform/marginal spectra/extensional step/borehole dilatome-ter/power interference引用本文复制引用
杨小林,柳畅,何斌,窦玛丽,王党席,张璐..乾陵地震台钻孔体应变张性突跳异常分析[J].地震地磁观测与研究,2014,(3):159-164,6.基金项目
中国地震局2013年度震情跟踪青年课题（2013020215）及陕西省地震局启航与创新基金课题联合资助 （）
