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On correlation between seismic activities and focal mechanisms of subsequent strong earthquakes
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作者 王慧敏 黎明晓 +1 位作者 吕梅梅 张晓东 《Acta Seismologica Sinica(English Edition)》 EI CSCD 2006年第4期406-416,共11页
On the basis of the results from spatial-temporal scanning of moderate seismic activities prior to 63 strong earth- quakes occurred since 1966, we investigate in this paper the characteristics of anomalous evolution o... On the basis of the results from spatial-temporal scanning of moderate seismic activities prior to 63 strong earth- quakes occurred since 1966, we investigate in this paper the characteristics of anomalous evolution of moderate seismic activities prior to strong earthquakes with different focal mechanisms in different tectonic blocks, as well as the correlation between principal seismic activities and nodal planes of focal mechanisms. The research results indicate that the moderate seismic activities prior to strong earthquakes display two significant stages of stress concentration and stress weakening, which are consistent to the evolvement of local tectonic stress field. The first stage, defined as medium-term stage, is characterized by seismic belts, seismic gaps and centralized activities; The second stage, defined as short-term stage, is predominated by continuous quiescence. For the earthquakes occurred on the strike-slip and normal faults, the two stages are relatively evident; while for the earthquakes occurred on the thrust faults, there are not characteristic images and seismic quiescence in both stages. The spatial distribution of moderate shock belts before strong earthquakes show a good coherence with that of the two nodal planes of focal mechanisms, while the spatial distribution of seismic gaps enclosed by moderate shocks display a poor coherence with the nodal planes. 展开更多
关键词 focal mechanism strong earthquake seismic activity correlation analysis
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Quantitative data about active tectonics and possible locations of strong earthquakes in the future in the northwestern Beijing 被引量:19
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作者 冉勇康 陈立春 徐锡伟 《地震学报》 CSCD 北大核心 2001年第5期502-513,共12页
Deterministic, probabilistic and composite-grading methods are used to get the possible locations of strong earth-quakes in the future in Norwest Beijing and its vicinity based on the quantitative data and their accur... Deterministic, probabilistic and composite-grading methods are used to get the possible locations of strong earth-quakes in the future in Norwest Beijing and its vicinity based on the quantitative data and their accuracy about active tectonics in the research area and by ordering, some questions in the results are also discussed. It shows that the most dangerous fault segments for strong earthquakes in the future include: segments B and A of the southern boundary fault of the Yangyuan basin, the southern boundary fault of the Xuanhua basin, the east segment of the southern Huaian fault and the east segment of the northern YanggaoTianzhen fault. The most dangerous area is YangyuanShenjing basin, the second one is TianzhenHuaianXuanhua basin and the third dangerous areas are WanquanZhangjiakou and northeast of Yuxian to southwest of Fanshan. 展开更多
关键词 北京 活动构造定量资料 综合方法 强震地点 确定性方法 概率方法
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Strong metal‐support interaction boosting the catalytic activity of Au/TiO_(2) in chemoselective hydrogenation 被引量:3
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作者 Feng Hong Shengyang Wang +4 位作者 Junying Zhang Junhong Fu Qike Jiang Keju Sun Jiahui Huang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2021年第9期1530-1537,共8页
Gold catalysts have been reported as highly effective catalysts in various oxidation reactions.However,for chemoselective hydrogenation reactions,gold‐based catalysts normally show much lowercatalytic activity than p... Gold catalysts have been reported as highly effective catalysts in various oxidation reactions.However,for chemoselective hydrogenation reactions,gold‐based catalysts normally show much lowercatalytic activity than platinum group metals,even though their selectivities are excellent.Here,wereport that the chemoselective hydrogenation activity of 3‐nitrostyrene to 3‐vinylaniline overAu/TiO_(2)can be enhanced up to 3.3 times through the hydrogen reduction strategy.It is revealedthat strong metal‐support interaction,between gold nanoparticles(NPs)and TiO_(2)support,is introducedthrough hydrogen reduction,resulting in partial dispersion of reduced TiOx on the Au surface.The partially covered Au not only increases the perimeter of the interface between the gold NPs andthe support,but also benefits H_(2)activation.Reaction kinetic analysis and H_(2)‐D2 exchange reactionshow that H_(2)activation is the critical step in the hydrogenation of 3‐nitrostyrene to 3‐vinylaniline.Density functional theory calculations verify that hydrogen dissociation and hydrogen transfer arefavored at the interface of gold NPs and TiO_(2)over the hydrogen‐reduced Au/TiO_(2).This study providesinsights for fabricating highly active gold‐based catalysts for chemoselective hydrogenationreactions. 展开更多
关键词 Gold catalysis strong metal support interaction Interface 3‐Nitrostyrene chemoselective hydrogenation Boosting activity
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Strong Earthquake Activity and Its Relation to Regional Neotectonic Movement in Sichuan-Yunnan Region 被引量:4
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作者 Su Youjin and Qin Jiazheng Seismological Bureau of Yunnan Province,Kunming 650041,China 《Earthquake Research in China》 2001年第3期239-251,共13页
Based on analyzing space inhomogeneous image of strong earthquake activity, the image of source rupture and the mechanical property of the source fault in Sichuan-Yunnan region, the relations among the strong earthqua... Based on analyzing space inhomogeneous image of strong earthquake activity, the image of source rupture and the mechanical property of the source fault in Sichuan-Yunnan region, the relations among the strong earthquake activity, active fault, modern movement status of active blocks and structural background of the deep media have been discussed, and the characteristics of strong earthquake activity and possible mechanism have been also discussed. 展开更多
关键词 Sichuan-Yunnan region strong earthquake activity Neotettonic movement
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Research on Strong Earthquake Tendency on Active Tectonic Block Boundaries in the Chinese Mainland 被引量:1
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作者 Zhang Langping Li Zhixiong +1 位作者 Shao Zhigang Yin Xiangchu 《Earthquake Research in China》 2011年第2期189-200,共12页
Previous studies have shown that the active tectonic block boundaries in the Chinese mainland are the main belts and concentration areas of strong earthquakes occurring in the Chinese mainland.It is essential to carry... Previous studies have shown that the active tectonic block boundaries in the Chinese mainland are the main belts and concentration areas of strong earthquakes occurring in the Chinese mainland.It is essential to carry out follow-up analysis of strong earthquake risk of active tectonic block boundaries.In this paper,we carry out the analysis on the tendency of strong earthquakes along each active tectonic block boundary from three aspects respectively,including the evolutionary characteristics of the Load/Unload Response Ratio time series,the probability method based on the log-normal distribution function,and variation of b value.The estimation of strong earthquake criticality on each active tectonic block boundary is done based on the evolutionary characteristics of the Load/Unload Response Ratio time series,the cumulative probability and conditional probability,and the decrease of the b value.Finally,according to the results of analyses on the above three aspects,the potential strong earthquake areas in the forthcoming 5 years in the Chinese mainland are discussed. 展开更多
关键词 active tectonic-block boundary Load/Unload Response Ratio (LURR) Log-normal distribution b value strong earthquake tendency Chinese mainland
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and nea
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《Acta Seismologica Sinica(English Edition)》 CSCD 1998年第4期515-516,共2页
Strongearthquakeactivityallovertheworldandstrong-moderateearthquakeactivitywithinandnearChina(February,1998-... Strongearthquakeactivityallovertheworldandstrong-moderateearthquakeactivitywithinandnearChina(February,1998-March,1998)PEI-SH... 展开更多
关键词 OVER ALL the world activITY strong
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Strong earthquake activity all over the world and strong-moderate earthquake activitywithinandnearChina(December,1995~February,1996)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 1996年第3期165-168,共4页
Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(December,1995~F... Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(December,1995~February,1996)PEI-... 展开更多
关键词 MODERATE December activITY ALL and EARTHQUAKE FEBRUARY over strong the
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Prediction of near-field strong ground motions for scenario earthquakes on active fault
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作者 王海云 谢礼立 +1 位作者 陶夏新 李捷 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2006年第1期11-17,共7页
A method to predict near-field strong ground motions for scenario earthquakes on active faults is proposed. First, macro-source parameters characterizing the entire source area, i.e., global source parameters, includi... A method to predict near-field strong ground motions for scenario earthquakes on active faults is proposed. First, macro-source parameters characterizing the entire source area, i.e., global source parameters, including fault length, fault width, rupture area, average slip on the fault plane, etc., are estimated by seismogeology survey, seismicity and seismic scaling laws. Second, slip distributions characterizing heterogeneity or roughness on the fault plane, i.e., local source parameters, are reproduced/evaluated by the hybrid slip model. Finally, the finite fault source model, developed from both the global and local source parameters, is combined with the stochastically synthetic technique of ground motion using the dynamic comer frequency based on seismology. The proposed method is applied to simulate the acceleration time histories on three base-rock stations during the 1994 Northridge earthquake. Comparisons between the predicted and recorded acceleration time histories show that the method is feasible and practicable. 展开更多
关键词 active fault scenario earthquake near-field strong ground motion global source parameters local source parameters asperity model k square slip model.
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Strong earthquake activity all over the world and strong moderate earthquake ac—tivity within and near China(Oct,2002~Nov,2002)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 2003年第2期233-235,共3页
关键词 OVER time UTC of MS strong earthquake activity all over the world and strong moderate earthquake activity within and near China NOV OCT West
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Strong earthquake activity all over the world and strong moderate earthquake activity within and near China(Dec., 2002~Jan., 2003)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 2003年第3期356-357,共2页
Illustration All the data in this catalog are chosen from the Preliminary Seismological Report of ChineseSeismic Stations (abbreviated to Monthly Report).The catalog includes the events of M≥4.7 inand near China and ... Illustration All the data in this catalog are chosen from the Preliminary Seismological Report of ChineseSeismic Stations (abbreviated to Monthly Report).The catalog includes the events of M≥4.7 inand near China and M≥6 all over the world.The Monthly Report is monthly complied by theNinth Section of Institute of Geophysics,CSB. 展开更多
关键词 2003 OVER DEC JAN strong earthquake activity all over the world and strong moderate earthquake activity within and near China
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China(June,1997~July,1997)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 1997年第6期128-129,共2页
Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(June,1997~July,... Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(June,1997~July,1997)PEI-SHANCHEN... 展开更多
关键词 MODERATE strong July 1997 June 1997 China activITY all and EARTHQUAKE NEAR
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China (February,1997~March,1997)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 1997年第4期119-120,共2页
Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(February,1997~M... Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(February,1997~March,1997)PEI-SHA... 展开更多
关键词 MODERATE strong February 1997 March 1997 China activITY all and EARTHQUAKE near
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China(October,1997~November,1997)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 1998年第2期126-128,共3页
StrongearthquakeactivityalovertheworldandstrongmoderateearthquakeactivitywithinandnearChina(October,1997~Nov... StrongearthquakeactivityalovertheworldandstrongmoderateearthquakeactivitywithinandnearChina(October,1997~November,1997)PEI... 展开更多
关键词 MODERATE strong November 1997 October 1997 China activITY ALL and EARTHQUAKE NEAR
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China(September,1996~November,1996)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 1997年第2期132-134,共3页
Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(September,1996~... Strongearthquakeactivityalovertheworldandstrong┐moderateearthquakeactivitywithinandnearChina(September,1996~November,1996)PEI... 展开更多
关键词 MODERATE strong November 1996 September 1996 China activITY ALL and EARTHQUAKE NEAR
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China(April,1997~May,1997)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 1997年第5期130-132,共3页
StrongearthquakeactivityalovertheworldandstrongmoderateearthquakeactivitywithinandnearChina(April,1997~May,1... StrongearthquakeactivityalovertheworldandstrongmoderateearthquakeactivitywithinandnearChina(April,1997~May,1997)PEISHANCHEN... 展开更多
关键词 MODERATE strong China May 1997 April 1997 activITY all and EARTHQUAKE near
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Strong earthquake activity all over the world and strong—moderate earthquake activity within and near China(August,2002~September,2002)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 2003年第1期124-125,共2页
关键词 OVER time UTC MS of AUGUST September strong earthquake activity all over the world and strong-moderate earthquake activity within and near China
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China (April, 2002 ~ May, 2002)
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作者 CHEN Pei-shan(陈培善) 《Acta Seismologica Sinica(English Edition)》 CSCD 2002年第5期583-584,共2页
关键词 OVER time UTC MS MAY strong earthquake activity all over the world and strong-moderate earthquake activity within and near China APRIL
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China (April, 2005~May, 2005)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 2005年第5期130-131,共2页
关键词 OVER MS strong earthquake activity all over the world and strong-moderate earthquake activity within and near China APRIL MAY
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China (February, 2005~March, 2005)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 2005年第4期496-498,共3页
关键词 OVER MS FEBRUARY MARCH strong earthquake activity all over the world and strong-moderate earthquake activity within and near China
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Strong earthquake activity all over the world and strong-moderate earthquake activity within and near China (August, 2004~September, 2004)
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作者 陈培善 《Acta Seismologica Sinica(English Edition)》 CSCD 2005年第1期122-123,共2页
关键词 OVER strong earthquake activity all over the world and strong-moderate earthquake activity within and near China AUGUST September MS
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