前言     

陈运泰 《地震学报》2002,(3)

《东亚大陆地球动力学研究》是王仁院士和曾融生院士倡导并建议立项的国家科技部攀登计划预选项目 (项目编号 95-专 - 0 5) .这个项目于 1997年底开始执行 ,2 0 0 1年底结题 ,并于 2 0 0 1年 12月 2 6日通过科技部验收 .在参予本项目的全体专家的共同努力下 ,圆满地完成了预定的科研任务 ,取得了丰硕的科研成果 .本项目搜集整理并提交了丰富的基础资料 ,开展了有针对性的地壳与上地幔结构的探测工作 ,取得了包括印度与欧亚大陆板块碰撞过程的模式、数字地震成像等在内的具有创新性的成果 .这些成果对推进我国固体地球科学的发展发挥了重要作…  相似文献   

Relocation and seismogenic structure of the 1998 Zhangbei-Shangyi earthquake sequence     

杨智娴  陈运泰  张宏志 《地震学报(英文版)》2002,15(4):383-394

Introduction The January 10, 1998 Zhangbei-Shangyi, Hebei Province, earthquake has been the third large event of magnitude 6.0 and greater since the 1976 great Tangshan earthquake of magnitude 7.8 in the northern China (33皛42癗, 110皛124癊). Before this event, there were only two events of magnitude 6.0 and greater occurred in or around the Tangshan area since 1976: the M=6.9 Ninghe, Tianjin, earthquake of November 15, 1976 and the M=6.2 Hangu, Tianjin, earthquake of May 12, 1977. The …  相似文献   

The accurate location of the injection-induced microearthquakes in German Continental Deep Drilling Program   总被引：1，自引：0，他引：1  

涂毅敏  陈运泰 《地震学报(英文版)》2002,15(6):616-627

Introduction The scientific drilling belongs to the International Lithosphere Program and is one of the four lithospheres explorations. So far there are more than ten countries, which have taken the scientific drilling. The German Continental Deep Drilling Program was later than the others and is the sec-ond deep drilling, but is the most significant scientific super deep drilling in the world. The Ger-man Continental Deep Drilling Program (Kontinentales Tiefbohrprogram der Bundesrepub…  相似文献   

基本物理常数     

P．J．Mohr B．N．Taylor李国荣  吕春来陈运泰 《世界地震译丛》2002,(3):73-83

科学技术数据委员会(CODATA)作为国际科学理事会(ICSU，前国际科学联合会理事会)的跨学科委员会。成立于1966年。之后不久，即1969年，科学技术数据委员会成立了基本常数工作组，定期为科学技术团体提供自相一致的基本常数及物  相似文献   

地震预测——进展、困难与前景   总被引：13，自引：1，他引：13  

陈运泰 《地震地磁观测与研究》2007,28(2):1-24

地震预测是一个既紧迫要求予以回答、又需要通过长期探索方能解决的地球科学难题.20世纪60年代以来,中期与长期地震预测研究取得了一些有意义的进展,如板块边界大"地震空区"的确认、"应力影区"、地震活动性图像、图像识别以及由美国帕克菲尔德地震预报实践获得的正反两方面的经验等.但是地震预测尚处于初期的科学探索阶段,目前总体水平仍然不高,特别是短期与临震预测的水平与社会需求相距甚远.地震预测的进展主要受到地球内部的"不可人性"、大地震的"非频发性"以及地震物理过程复杂性等困难的制约.依靠科技进步,强化对地震及其前兆的观测,选准地点、开展并坚持以地震预测试验场为重要方式的地震预测科学试验,系统地进行基础性的对地球内部及对地震的观测、探测与研究,坚持不懈,对实现地震预测的前景是可以审慎地乐观的.  相似文献   

序     

陈运泰 《地震地磁观测与研究》2007,28(5):3-3

张奕麟先生是我国现代地震观测技术领域的一位开拓者.他1928年10月12日出生于上海,1951年以优异的成绩考入中国科学院地球物理研究所任见习员,从此,走上了为地震科学而奋斗的人生历程.  相似文献   

用Lg波资料反演场地效应与地震波衰减参数   总被引：3，自引：1，他引：3       下载免费PDF全文

朱新运  陈运泰 《地震学报》2007,29(6):569-580

基于谱比法，以台站记录地震波频谱为观测数据，通过扣除仪器响应及几何扩散后同一地震不同台站记录谱比，扣除震源方向性、 震源因子的影响，在此基础上，建立数学模型通过联合反演求解场地效应及地震波衰减参数. 以浙江省地震台网台站记录的台湾地震数字化地震波资料为基础，使用地震波记录中的Lg波， 评估浙江省台网丘陵地带基岩台站场地效应， 计算穿越台湾海峡较单一路径Lg波衰减参数. 研究使用20次发生于2002——2005年、 震级在MS5.0~6.7之间的台湾东北部较小区域地震， 参与评估台站16个， 地震波记录960条. 地震波处理频段为0.5～10.0 Hz， 每间隔0.2 Hz计算一次，对应于垂直、 东西及南北分量获得的衰减参数， 数据结果分别为:gamma;(f )=0.001 75f 0.43485, gamma;(f )=0.001 45f 0.48467, gamma;(f )=0.0021f 0.41241. 庆元台(QIY)在1.5 Hz以上放大效应非常明显，宁波台(NIB)在大部分频率点场地效应最小，参与评估台站场地效应各分向基本相当，未表现出方向性特征.   相似文献   

An inversion of site response and Lg attenuation using Lg waveform   总被引：1，自引：0，他引：1  

朱新运  陈运泰 《地震学报(英文版)》2007,20(6):605-616

Based on spectral ratio method, a joint inversion method was used to obtain parameters of Lg wave attenuation and site response. The inversion method allows simple and direct (two-parameter) determination of Lg wave attenua- tion and site response from sparse spectral data, which are not affected by radiation pattern factor and different response of same instrument after geometrical spreading. The method was used successfully for estimating site re- sponse of stations of Zhejiang Seismic Network and measuring Lg wave attenuation. The study is based on 20 earth- quakes occurred in northeast of Taiwan with magnitude MS5.0~6.7 and 960 seismic wave records from 16 stations in Zhejiang area from 2002 to 2005. The parameters of site response and Lg attenuation were calculated with a fre- quency interval of 0.2 Hz in the range of 0.5 Hz to 10 Hz. Lg wave attenuation coefficient corresponding to U-D, E-W and N-S components are γ ( f )=0.00175 f 0.43485, γ ( f )=0.00145f 0.48467 and γ ( f )=0.0021f 0.41241, respectively. It is found that the site response is component-independent. It is also found that the site response of QIY station is significant above the frequency of 1.5 Hz, and that the site response of NIB station is low for most frequency  相似文献   

Comparison between different earthquake magnitudes determined by China Seismograph Network   总被引：1，自引：0，他引：1  

刘瑞丰  陈运泰任枭 徐志国孙丽  杨辉梁建宏  任克新 《地震学报(英文版)》2007,20(5):497-506

By linear regression and orthogonal regression methods, comparisons are made between different magnitudes (lo-cal magnitude ML, surface wave magnitudes MS and MS7, long-period body wave magnitude mB and short-period body wave magnitude mb) determined by Institute of Geophysics, China Earthquake Administration, on the basis of observation data collected by China Seismograph Network between 1983 and 2004. Empirical relations between different magnitudes have been obtained. The result shows that: 1 As different magnitude scales reflect radiated energy by seismic waves within different periods, earthquake magnitudes can be described more objectively by using different scales for earthquakes of different magnitudes. When the epicentral distance is less than 1 000 km, local magnitude ML can be a preferable scale; In case M<4.5, there is little difference between the magnitude scales; In case 4.5MS, i.e., MS underestimates magnitudes of such events, therefore, mB can be a better choice; In case M>6.0, MS>mB>mb, both mB and mb underestimate the magnitudes, so MS is a preferable scale for deter-mining magnitudes of such events (6.08.5, a saturation phenomenon appears in MS, which cannot give an accurate reflection of the magnitudes of such large events; 2 In China, when the epicentral distance is less than 1 000 km, there is almost no difference between ML and MS, and thus there is no need to convert be-tween the two magnitudes in practice; 3 Although MS and MS7 are both surface wave magnitudes, MS is in general greater than MS7 by 0.2~0.3 magnitude, because different instruments and calculation formulae are used; 4 mB is almost equal to mb for earthquakes around mB4.0, but mB is larger than mb for those of mB≥4.5, because the periods of seismic waves used for measuring mB and mb are different though the calculation formulae are the same.  相似文献   

Comparison between earthquake magnitudes determined by China seismograph network and US seismograph networks (I): Body wave magnitude     

刘瑞丰  陈运泰  Peter Bormann  任枭  侯建民  邹立晔  杨辉 《地震学报(英文版)》2005,18(6):627-631

Introduction Gutenberg (1945a, b) introduced body wave magnitude based on P, PP and S waves (with a period of 0.5~12.0 s) of teleseismic events. Body wave magnitude includes mb determined with short-period seismograph and mB determined with middle- and long-period seismographs. Some-times it is written as m, which is referred to as unified earthquake magnitude. mb represents earth-quake magnitude measured with body wave amplitude around 1 s, while mB represents earthquake magnitude measured …  相似文献