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| 1 | 全球应力场与构造分析显示文摘介绍了近年来全球构造应力研究方面的一些新进展并以“世界应力图”提供的资料为背景 ,结合一些最新的研究成果 ,阐述了全球构造应力场的分布特征及其与板块构造运动之间的联系。研究结果表明 :(1)全球存在大尺度的统一性构造应力场 ;(2 )全球大多数板块内部地区为挤压应力作用 ,其应力结构多为逆断型、走滑型或逆走滑型 ;(3)大陆板块内部的扩张区大多位于高海拔异常地区 ,其应力结构为正断型或正走滑型 ,如青藏高原、东非裂谷和贝加尔裂谷等 ;(4)全球大部分地区的地壳上部构造应力作用方向较为均一 ,存在区域统一应力场 ;(5 )全球大部分地区的最大水平主应力方向与板块绝对运动 (角速度 )迹线保持较好的一致性 ,反映出构造应力与板块运动的关系密切 ;(6 )板块汇聚、洋脊扩张可能是产生岩石圈上部构造应力的主要力源。 | 谢富仁 崔效锋 赵建涛 | 2003 | 地学前缘2003，10，U08： | 40 |
| 2 | Preliminary analysis on the tectonic stress level in the source region of Tangshan earthquake显示文摘The abundant data of focal mechanism solutions in Tangshan region, China, are inverted for the tectonic stress field. Combined with tectonophysical consideration, the magnitude of the three principal stresses, as well as their vertical variation under the average crustal rock property, in the source region of the 1976 Tangshan earthquake is estimated. The relationship between crustal stress and friction mc, pore pressure P0 and stress shape factor F is studied. The paper draws the conclusion that the vertical increasing rate of the maximum principal stress s is directly proportional to friction, and inversely to pore pressure P0 and stress shape factor F ; while the vertical increasing rate of the minimum principal tress s is directly proportional to pore pressure P0, inversely to friction mc and stress shape factor F. This study is a try to invert the data of focal mechanism solutions for the complete stress tensor. | 赵建涛 崔效锋 谢富仁 | 2002 | Acta Seismologica Sinica(English Edition)2002，15，3： | 1 |
| 3 | Characteristics of recent tectonic stress field in Jiashi,Xinjiang and adjacent regions显示文摘In this paper, we analyze the general directional features of regional tectonic stress field in Jiashi, Xinjiang and adjacent regions from the data of focal mechanism solutions, borehole breakouts and fault slip. The direction of maximum horizontal principal stress given by these three sorts of stress data differs slightly, which indicates there is a NS-trending horizontal compression in the tectonic stress field in the region of interest. We also invert and analyze the temporal and spatial changes of recent tectonic stress field in the research region by using 137 focal mechanism solutions. The inverted results show that the maximum principal stress σ1 in Jiashi and adjacent re- gions is NNW-SSE with an azimuth of 162°. In the period from 1997 to 2003 before the occurrence of Ji- ashi-Bachu earthquake, the directions of the maximum principal stress σ1 and the minimum principal stress σ3 in Jiashi seismic source zone changed clockwise with respect to the tectonic stress field in the regions around. The maximum principal stress σ1 adjusted to the direction of NNE-SSW with an azimuth of 25°. Under the control of this tectonic stress field, a series of earthquakes happened, including the Jiashi strong earthquake swarm in 1997. Then, the tectonic stress field in the Jiashi seismic source zone might adjust again. And the tectonic stress field controlling the Jiashi-Bachu earthquake in 2003 was in accordance with the regions around. | 崔效锋 | 2006 | Acta Seismologica Sinica(English Edition)2006，19，4： | 0 |
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