CAJ | 학술논문

2012年2-6月乾陵地震台钻孔体应变多次记录到不明原因的大幅张性突跳，采用 HHT方法对边际谱特征进行分析，并与山东长清地震台体应变因电源不匹配所产生干扰信号的边际谱特征进行对比。结果表明，二者具有较好的相关性。据此推断，造成此次应变异常的主要原因是电源问题。
2012년2-6월건릉지진태찬공체응변다차기록도불명원인적대폭장성돌도，채용 HHT방법대변제보특정진행분석，병여산동장청지진태체응변인전원불필배소산생간우신호적변제보특정진행대비。결과표명，이자구유교호적상관성。거차추단，조성차차응변이상적주요원인시전원문제。
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.