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Investigation on variations of apparent stress in the region in and around the rupture volume preceding the occurrence of the 2021 Alaska MW8.2 earthquake被引量：2: 《Earthquake Science》2022年第3期147-160,共14页Xuezhong Chen Yane Li Lijuan Chen; supported by the the Special fund of the Institute of Geophysics,China Earthquake Administration(No.DQJB22Z04).; On July 29, 2021, a large earthquake of MW8.2 occurred south of the Alaska Peninsula. To investigate the spatial-temporal changes of crustal stress in the earthquake-stricken area before this event, we selected 159 ea...; 关键词：MW8.2 earthquake in Alaska apparent stress variation characteristics Earth’s rotation correlation.

b-value and fractal dimension variations in Iran被引量：1: 《Earthquake Science》2019年第2期57-63,共7页Alireza Firoozfar Bahman Ansari; Iran sits on a region with a high intrinsic level of seismic activity due to its tectonic setting.Through statistical examination of the earthquakes listed in the catalogue from International Institute of Earthquake E...; 关键词：stress faulting style Iran plateau B-VALUE fractal di-mension

Characteristics of subsurface density variations before the 4.20 Lushan M_s7.0 earthquake in the Longmenshan area: inversion results被引量：5: 《Earthquake Science》2015年第1期49-57,共9页Songbai Xuan Chongyang Shen Hui Li Hongtao Hao; supported by the National Natural Science Foundation of China (41304060);the National Key Basic Research Program of China (973 Program, 2013CB733305);Scientific Investigation of April 20, 2013 M7.0 Lushan, Sichuan Earthquake; The 4.20 Lushan Ms7.0 earthquake occurred on the southwest segment of the Longmenshan fault on 20 April 2013. Some meaningful information on the prepa- ration and occurrence of this earthquake was found based on the d...; 关键词：Density variations Gravity inversion Deepprogress Lushan earthquake

Variations of electron density and temperature in ionosphere based on the DEMETER ISL data被引量：1: 《Earthquake Science》2010年第4期349-355,共7页Yufei He Dongmei Yang Rong Zhu Jiadong Qian M Parrot; supported by National Key Technology Research and Development Program (No 2008BAC35B02); Observations of the Langmuir Probe Instrument （ISL, Instrument Sonde de Langmuir） onboard the DEMETER satellite during four years from 2006 to 2009 were used to analyze the tempo-spatial variations of electron densi...; 关键词：seasonal variation annual variation spatial distribution Ne Te DEMETER satellite

Numerical Green’s function method:Application to quantifying ground motion variations of M7 earthquakes: 《Earthquake Science》2010年第3期205-214,共10页Haijiang Wang Heiner Igel Frantisek Gallovic; funding from the International Quality Network:Georisk (Ger-man Academic Exchange Service),and the Elite Gradu-ate College THESIS (Bavarian Government);support from the European Hu-man Resources Mobility Program (Research Training Network SPICE); The concept of ＂numerical Green’s functions＂（NGF or Green’s function database） is developed. The basic idea is： a large seismic fault is divided into subfaults of appropriate size, for which synthetic Green’s...; 关键词：numerical Green＇s function ground motion variation hypocenter location static displacement distribution

Analyses on gravity variation before and after the Lijiang earthquake based on a finite rectangular dislocation model被引量：1: 《Acta Seismologica Sinica(English Edition)》2003年第2期185-194,共10页燕乃玲李辉申重阳; Joint Seismological Science Foundation of China (No.101005).; The methods were discussed to calculate the gravity variation due to crustal deformation based on a model of dis-location on a finite rectangular plane. Taking the Lijiang MS=7.0 earthquake as an example the calculati...; 关键词：a finite rectangular dislocation model Lijiang earthquake co-seismic gravity field variations

Interpretation of the short period variations in geomagnetic anomalies of Shaanxi region: 《Acta Seismologica Sinica(English Edition)》1999年第6期684-687,689,共5页范国华姚同起韩克礼; A temporary profile from Shiquan in the southern part of Shaanxi Province to Ningxian in Gansu Province for observation of geomagnetic short period variations was set up. The characteristics of geomagnetic short perio...; 关键词：geomagnetic transfer function wavelet transform migrated residual field

The distribution characteristics of short period geomagnetic variations in Shaanxi region被引量：1: 《Acta Seismologica Sinica(English Edition)》1998年第6期64-72,共9页GUO HUA FAN TONG QI YAO KE LI HAN KE JIA ZHU ZUO WEN GU Institute of Geophysics, China Seismological Bureau, Beijing 100081, China; In order to investigate the characteristics of short period geomagnetic variations in Shaanxi region, a temporary measurement profile from Shiquan in the southern part of Shaanxi to Ningxian in Gansu was set up in Sep...; 关键词：geomagnetic vertical transfer function geomagnetic horizontal transfer function anomalous inductive current concentration

The　Q　value　variations　in　the　preparing　pro－cess　of　rock　rupture: 《Acta Seismologica Sinica(English Edition)》1996年第4期122-127,共6页王彬许昭永赵晋明胡毅力; In this paper, the 'spectral amplitude ratio method'(SAR) , 'energy method'(EN) and 'coda wave method'(CW) are used to calculate the Q value variations of gneiss in the preparing rupture process. The obtain...; 关键词：rupturing process spectral amplitude ratio method energy method coda wave method Q value.

The　variations　of　the　degree　of　ground　resistivity　anisotropy　during　the　Tangshan　earthquake被引量：4: 《Acta Seismologica Sinica(English Edition)》1995年第4期621-627,共7页毛桐恩王铁成姚家福卢军张洪魁; Based on the geoelectric observation data of the 1976 Tangshan earthquake of M=7. 8 compiled by the Research Group on the Geoelectricity of the Tangshan Great Earthquake, a dimensionless factor S has been defined as t...; 关键词：Tangshan earthquake ground resistivity anisotropy

VARIATIONS