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Contemporary crustal movement of continental china obtained by global positioning system(GPS) measurements

Chinese Science Bulletin 2001年第18期46卷 1552-1554,1588页

作者： MA Zongjin, CHEN Xinlian, YE Shuhua, LAI Xian, WEI Ziqing, CHEN Junrong, NING Jinsheng, XU Huoze & DING Guoyu1. Insitute of Geology, china seismological bureau, beijing 100029. china (e-mail: disgroup@***)2. Center for Analysis and Prediction, china seismological bureau, beijing 100036, china 3. Shanghai Astronomic Observatory, Chinese Academy of Sciences, Shanghai 200030, china 4. Institute of Seismology, china seismological bureau, Wuhan 430077, china 5. Institute of Survey and Mapping, Xi’an 710054, china 6. National bureau of Survey and Mapping, beijing 100830, china 7. Wuhan University, Wuhan 430077, china 8. Institute of Geodesy and Geophysics, Wuhan 430077, china 9. china seismological bureau, beijing 100036, china Insitute of Geology China Seismological Bureau Beijing China Center for Analysis and Prediction China Seismological Bureau Beijing China Shanghai Astronomic Observatory Chinese Academy of Sciences Shanghai China Institute of Seismology China Seismological Bureau Wuhan China Institute of Survey and Mapping Xi’an China National bureau of Survey and Mapping Beijing China Wuhan University Wuhan China Institute of Geodesy and Geophysics Wuhan China china seismological bureau Beijing China

We obtain a unified horizontal velocity field of continental china and vicinity through measurements at 81 GPS stations provided by the National Key Infrastructure Project, Crustal Movement Observation Network of china. The velocity field delineates patterns of movements and deformation of active crustal blocks in continental china under the Eurasia-fixed reference frame. The space-based geodesy also clearly shows for the first time the horizontal movementand deformation of continental china induced by indentation of the Indian plate. The data provide kinematic constraints for simulating dynamic process of continental litho-spheric deformation.

关键词： crustal movement velocity field tectonic deformation.

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Buckling of shear zone under generalized boundary forces and its tectonic significance

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Chinese Science Bulletin 1997年第13期42卷 1119-1122页

作者： XIE XinshengInstitute of Crustal Dynamics, State seismological bureau, beijing 100085, china Institute of Crustal Dynamics State Seismological Bureau Beijing 100085 China

EN echelon fold tectonics of the crust is the result of buckling of a shear zone with long bound-aries under the action of pure shear, and also of a rectangular plate with simple supportedboundaries under pure shear a... 详细信息

关键词： echelon fold echelon angle echelon pitch interval critical stress strain energy of bending.

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Partial Melting and Its Implications for Understanding the Seismic Velocity Structure within the Southern Tibetan Crust

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Acta Geologica Sinica(English Edition) 2003年第1期77卷 64-71页

作者： YANG Xiaosong, MA Jin, JIN Zhenmin, GAO Shan and MA Shengli Geology Institute, china seismological bureau, beijing 100029.Laboratory of Tectonophysics, china seismological bureau, beijing 100029.Faculty of Earth Sciences, china University of Geosciences, Wuhan, Hubei 430074 china Seismol Bur Inst Geol Beijing 100029 Peoples R China china Seismol Bur Lab Tectonophys Beijing 100029 Peoples R China china Univ Geosci Fac Earth Sci Wuhan 430074 Hubei Peoples R China

In order to constrain the crustal wave velocity structure in the southernTibetan crust and provide insight into the contribution of crustal composition, geothermal gradientand partial melting to the velocity structure, which is characterized by low average crustalvelocities and widespread presence of low-velocity zone(s), the authors model the crustal velocityand density as functions of depth corresponding to various heat flow values in light of velocitymeasurements at high temperature and high pressure. The modeled velocity and density are regarded ascomparison standards. The comparison of the standards with seismic observations in southern Tibetimplies that the predominantly felsic composition at high heat flow cannot explain the observedvelocity structure there. Hence, the authors are in favor of attributing low average crustalvelocities and low-velocity zone(s) observed in southern Tibet mainly to partial melting. Modelingbased on the experimental results suggests that a melting percentage of 7-12 could account for thelow-velocity zone(s).

关键词： partial melting intracrustal low-velocity zone high-pressure andhigh-temperature experiments Tibetan plateau

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Palaeogene Biostratigraphic Characteristics of Red Basins In Western Henan and Its Adjacent Areas, With an Outline of Palaeogene Palaeobiogeographic Provinces of china

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Acta Geologica Sinica(English Edition) 1992年第1期66卷 101-117页

作者： Du Hengjian Ma Ancheng Cheng Jie Wu Weimin china University of Geosciences, beijing beijing Normal University china University of Geosciences, beijing Institute of Crustal Dynamics, State seismological bureau, beijing china University of Geosciences Beijing China

This article is a preliminary summary of Paleogene biostratigraphy of the Liguanqiao, Tantou andYuanqu basins, with a new proposal for Paleogene paleobiogeographic provinces of china. On the basis of asynthetic analysis of the geological data, characters of the mammalian assemblages and their comparisons withother corresponding faunas, a new scheme on Paleogene biostratigraphic subdivision of the basins has been putforward here. Based on differences of biostratigraphic sequences, characteristics of mammalian assemblagesand directions of faults controlling Paleogene basins in china, six Paleogene paleobiogeographic provinces ofchina have been proposed in this paper, that is: Tianshan-Yinshan-Tumen Province; Tarim-North china Prov-ince; Kunlun-Qinling Province, Yangtze Province, Nanling and Southeastern Coastal Province, Qinghai andTibet Province.

关键词： With an Outline of Palaeogene Palaeobiogeographic Provinces of china

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Earthquake Science and Technology as Well as Preparedness and Reduction of Earthquake Disaster in china

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Earthquake Research in china 1999年第2期13卷 3-16页

作者： He Yongnianchina seismological bureau, beijing 100036, china

This paper systematically presents the state-of-the-art of preparedness and reduction of earthquake disasters in china. It contains abundant information on the goal, policy, working links, administrative organizations, and main scientific and technological approaches for earthquake disaster reduction in this country. The focus is placed on "taking science and technology as the foundation" and "management based on legal system."

关键词： Preparedness and reduction of earthquake disaster Scientific and technological foundation Management based on legal system china seismological bureau.

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δD values of escaped H_2 from hot springs at the Tengchong Rehai geothermal area and its origin

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Chinese Science Bulletin 2002年第2期47卷 146-149页

作者： SHANGGUAN Zhiguan & HUO Weiguo Institute of Geology, china seismological bureau, beijing 100029. china Institute of Geology and Geophysics, Chinese Academy of Sciences, beijing 100029. china Institute of Geology China Seismological Bureau Beijing 100029 China

Here we give the δD values of escaped H2 from hot springs at the Tengchong Rehai and adjacent regions, and deal with a genetic correlation between the increment H2 in escaped gases from middle-shallow reservoirs and the H2S, CH4 derived from deep sources. Isotopic compositions of H2 indicate that the generation of increment H2 may be related to recent strong activity of N-W trending fault at the Rehai area. Trace monitoring the H2 release could be significant in order to keep watch on present activity of that fault.

关键词： Rehai geothermal area hydrogen stable isotopic composition.

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Progress in Earthquake Science and Technology in china: Review and Prospects (Ⅲ)

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Earthquake Research in china 2002年第1期16卷 95-112页

作者： Chen Zhanglichina seismological bureau, beijing 100036, china china seismological bureau Beijing 100036China

*** CONCEPTION AND PROSPECTS TO THE FUTUREAt the time of entering the new century,we should not forget the great havoc to the people caused by earthquakes in china for last hundred *** affirming the great progress in earthquake science and technology in china during last tens of years,especially during the 9.h Five-Year Plan,we have clearly known that there exists a large gap between the current scientific-technical capability of earthquake disaster prevention and reduction and the social need for earthquake disaster reduction and mitigation as well as effect of earthquake on social-economic *** the economic development and progress of social civilization,the effect of earthquake disaster on social-economic life tends to be rapidly ***,the task for earthquake disaster prevention and reduction will be more tremendous in the new century.

关键词： Earthquake Science and technology Progress Review and prospect

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Progress in Earthquake Science and Technology in china: Review and Prospects (I)

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Earthquake Research in china 2001年第4期15卷 329-345页

作者： Chen Zhanglichina seismological bureau, beijing 100036, china china seismological bureau Beijing 100036 China

In the article the author looks back the hard development course and great progress in earthquake science and technology in china during the last near a half of century and expounds the following 3 aspects: (1) The strong desire of the whole society to mitigate seismic disasters and reduce the effect of earthquakes on social-economic live is a great driving force to push forward the development of earthquake science and technology in china; (2) To better ensure people’s life and property, sustainable economic development, and social stability is an essential purpose to drive the development of earthquake science and technology in china; and (3) To insist on the dialectical connection of setup of technical system for seismic monitoring with the scientific research of earthquakes and to better handle the relation between crucial task, current scientific level, and the feasibility are the important principles to advance the earthquake science and technology in china. Some success and many setbacks in earthquake disaster mitigation consistently enrich our knowledge regarding the complexity of the conditions for earthquake occurrence and the process of earthquake preparation, promote the reconstruction and modernization of technical system for earthquake monitoring, and deepen the scientific research of earthquakes. During the last 5 years, the improvement and modernization of technical system for earthquake monitoring have clearly provided the technical support to study and practice of earthquake prediction and precaution, give prominence to key problems and broaden the field of scientific research of earthquakes. These have enabled us to get some new recognition of the conditions for earthquake occurrence and process of earthquake preparation, characteristics of seismic disaster, and mechanism for earthquake generation in china’s continent. The progress we have made not only encourages us to enhance the effectiveness of earthquake disaster mitigation, but also provides

关键词： Earthquake Science and technology Progress Review and prospect

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Progress in Earthquake Studies in china for the Past 30 Years

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Earthquake Research in china 1996年第1期10卷 4-18页

作者： Chen ZhangliState seismological bureau,beijing 100036,china

Progress and application of earthquake studies are important and effective fundamentals for the improvement of earthquake prevention and disaster reduction. Through industrious effort during the past 30 years, significant advances were made in understanding the rules of earthquake occurrence, and the mastering and applying of the technology of earthquake prevention and disaster reduction. A number of devices that come close to or reach advanced world levels have been established and some systems in seismological experiments and earthquake prevention work have been improved, the ability to test and identify earthquake precursors have been raised, and the understanding of the complexity of these precursors has been deepened. The practical indexes and approaches for earthquake prediction have been worked out, and remarkable achievements in predictions and prevention of major earthquakes have

关键词：名言苦口

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Preparedness and Mitigation of Urban Earthquake Disaster in china

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Natural Disaster Reduction in china 2000年第1期 23-25页

作者： HE Yongnian (china seismological bureau, beijing 100036, china)

chinais***,betweentwobiggestearthquakebelts,theCir***... 详细信息

chinais***,betweentwobiggestearthquakebelts,theCir***...

关键词： preparedness mitigation earthquake

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