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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 10002.,{2. (e-mail: disgroup@***)2. center for analysis and prediction, china seismological bureau, beijing 100036,{2. 3. Shanghai Astronomic Observatory, Chinese Academy of Sciences, Shanghai 2.0030,{2. 4. Institute of Seismology, china seismological bureau, Wuhan 430077,{2. 5. Institute of Survey and Mapping, Xi’an 710054,{2. 6. National bureau of Survey and Mapping, beijing 100830,{2. 7. Wuhan University, Wuhan 430077,{2. 8. Institute of Geodesy and Geophysics, Wuhan 430077,{2. 9. china seismological bureau, beijing 100036,{2. Insitute of Geology China Seismological Bureau Beijing China center for analysis and {2. 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 {2. 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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Heart failure in china:epidemiology and current management

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Journal of Geriatric Cardiology 2024年第6期21卷 631-641页

作者： Sheng-Shou HU the Writing Committee of the Report on Cardiovascular Health and Diseases in china Fuwai Hospital National Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

The Annual Report on Cardiovascular Health and Diseases in china(2.2.)intricate landscape of cardiovascularhealth in *** connection with the previous section,this sixth section of the report offers a comprehensive analysis of heart failure(HF)in *** is one of the most important cardiovascular disease in the 2.st *** mortality is equivalent to that of *** is an important public health problem that seriously affects the health of Chinese *** recent years,with the deepeningof understanding,the change of treatment principles,the innovation of treatment methods and the update of treatment guidelines,the in-hospital mortality of HF patients has declined,and the long-term prognosis is also ***,there are stilldifferences in the management level of HF among different hospitals in *** to improve the standardized diagnosis andtreatment level of HF in china remains an important challenge.

关键词： epidemiology diagnosis treatment

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Pulmonary embolism and deep venous thrombosis in china

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Journal of Geriatric Cardiology 2024年第8期21卷 775-778页

The Annual Report on Cardiovascular Health and Diseases in china(2.2.) intricate landscape of cardiovascular health in *** connection with the previous section,this eighth section of the report offers a comprehensive analysis of pulmonary embolism and deep venous *** recent years,research in the field of pulmonary vessel in china has made great progress.A number of nationwide multi-center registry research results have filled the gaps in the epidemiology,diagnosis and treatment of pulmonary hypertension and venous *** types of pulmonary hypertension still need attention to the identification of risk factors and/or risk stratification,and venous thromboembolism needs attention in the prevention and the overall management inside and outside *** the future,we look forward to the publication of more high-quality research in china,which could be able to improve relevant guidelines for pulmonary vascular diseases both domestically and inter-nationally.

关键词： epidemiology prevention diagnosis

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Deformation in the Three Gorges Reservoir after the first impoundment determined by GPS measurements

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Progress in Natural Science:Materials International 2005年第6期15卷 515-522页

作者： DU Ruilin 1,2., QIAO Xuejun 1,2.*, WANG Qi 1,2., XING Canfei 1,2.and YOU Xinzhao 1,3 (1. Institute of Seismology, CEA, Wuhan 430071, china 2. Laboratory of Crustal Movement and Earth Observation, Wuhan 430071, china 3. {2. for analysis and prediction, CEA, beijing 100036, china) Institute of Seismology CEA Wuhan 430071 China Laboratory of Crustal Movement and Earth Observation Wuhan 430071 China center for analysis and {2. CEA Beijing 100036 China

A 6-year long GPS observation (1998—2.03) indicates that crustal deformation in the Three Gorges area is less active at a marginally measurable rate of 0—5 mm/a relative to stable South china block. However, the impounding water in June 2.03 has induced transient displacement at the Three Gorges dam and the emerging reservoir. GPS measurements after the first stage of water filling of the reservoir demonstrate that vertical subsidence close by Yangtze River is about 10—40 mm, and the horizontal displacement is less than 5—10 mm. The maximum subsidence induced by the impoundment is located in the segment of the reservoir from Maoping to Xiangxi. The water loading-induced deformation diminishes rapidly with the distance from banks of the reservoir. The overall pattern of transient deformation is consistent with the simulation result of Farrell, and is attributed to the elastic response of upper lithosphere crust to overlying water reservoir.

关键词： Three Gorges GPS impoundment deformation.

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Tectonomechanical analysis of Listric Faults

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Acta Geologica Sinica(English Edition) 1988年第2期1卷 127-140页

作者： Chen Qiang center for analysis and {2., State seismological bureau, beijing center for analysis and {2. State Seismological Bureau Beijing

Listric faults of different levels and scales are widely developed in the lithosphere. According to theirtectonomechanical geneses. the author divides listric faults into primary and secondary ones. and the formermay be subdivided into gravity-gliding listric faults, regional extensional listric normal faults. regionalcontractional reverse listric faults and deep-seated ductile listric faults, By means of the slip-line field theorydealing with Mohr’s criterion expressed by quadratic limiting curves. the author has preliminarily determinedthe occurrences. patterns and mechanical properties of various types of listric faults during their formation. andhas analyzed their tectonic evolution and related dynamic processes in the lithosphere.

关键词： Tectonomechanical analysis of Listric Faults

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Earthquake damage and loss estimation with Geographic Information System

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Acta Seismologica Sinica(English Edition) 1998年第6期11卷 95-102页

作者： YONG CHEN GE PING LI QI FU CHEN LING CHEN MIN FENG LI center for analysis and {2., china seismological bureau, beijing 100036, china 1. center for analysis and {2. China Seismological Bureau 100036 Beijing China

The present paper first includes a brief discussion of GIS technology. Next, the various steps in a regional earthquake damage and loss analysis are discussed, with emphasis on their implementation in the GIS environment. Lastly, a software of WorldRisk which was completed recently are presented to illustrate GIS based global earthquake damage and loss estimation.

关键词： GIS earthquake damage loss estimation

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National 2.00' GPS control network of china

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Progress in Natural Science:Materials International 2007年第8期17卷 983-987页

作者： Yang Yuanxi~(1**) Tang Yingzhe~1 Chen Chuanlu~2.Wang Min~3 Zhang Peng~4 Wang Xiaorui~2.Song Lijie~5 Zhang Zusheng~6 (1.Xi'an Research Institute of Surveying and Mapping,Xi'an 710054,china 2.Geodetic Data Processing center,Xi'an 710054,china 3.center of Earthquake analysis and prediction,china seismological bureau,beijing 100036,china 4.National Geomatics center of china,beijing 100044,china 5.Institute of Surveying and Mapping,Zhengzhou University of Information Engineering,Zhengzhou 450052.china 6.First Crustal Deformation Monitoring center,china seismological bureau,Tianjin 300180,china) Xi'an Research Institute of Surveying and Mapping Xi'an 710054 China Geodetic Data Processing center Xi'an 710054 China center of Earthquake analysis and {2. China Seismological Bureau Beijing 100036 China National Geomatics center of china Beijing 100044 China Institute of Surveying and Mapping Zhengzhou University of Information Engineering Zhengzhou 450052 China First Crustal Deformation Monitoring center China Seismological Bureau Tianjin 300180 China

An accurately unified national GPS network with more than 2.00 stations,named"National 2.00' GPS Control Net- work",signed the epoch 2.00.0,has been established by integrating the existing six nationwide GPS networks of china set up by differ- ent departments with different *** paper presents the characteristics of the existing GPS networks,summarizes the strategies in the integrated adjustment of the GPS network,including functional model,stochastic model as well as the adjustment principle modifi- *** modifying the adjustment strategies according to the characteristics of the existing GPS networks and under the support of the IGS stations,the accuracy of the integrated national GPS network is greatly *** datum differences among the sub networks disappear,the systematic error influences are weakened,and the effects of the outliers on the estimated coordinates and their variances are *** is shown that the average standard deviation for the horizontal component is smaller than 1.0 cm,the vertical component is smaller than 2.0 cm,and the three-dimensional (3-D) position of geocenter coordinates is smaller than 3.0 *** exterior checking ac- curacy for the 3-D position is averagely better than 1.0 cm.

关键词： GPS control network adjustment systematic errors robust estimation variance component estimation coordinate system

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DISPLACEMENT TIME SERIS AT FIDUCIAL STATIONS OBTAINED FROM GPS OBSERVATIONS IN CRUSTAL MOVEMENT OBSEREVATION NETWORK OF china

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大地测量与地球动力学 2003年第B12期23卷 54-61页

作者： Gu Guohua and Zhang Jing (center for analysis and {2., CEA,beijing 100036,china) center for analysis and {2. CEABeijing 100036China

A preliminary analysis of the time series of displacements at fiducial stations obtained from continuous GPS observations during the period of Sept. 1998 to Oct. 2.01 in the Crustal Movement Observation Network of china (CMONOC) is made. The selection of datum for producing displacement time series suitable for earthquake {2. is discussed. Time series of horizontal crustal displacements are obtained by using a datum of a stable group of 9 stations with very small relative horizontal displacements in eastern china as reference. Time series of vertical crustal displacements are obtained by using a stable group of 7 stations scattered in different regions with relatively small relative vertical displacements as reference. During the period of 2.00 to 2.01, anomalous horizontal and vertical displacements occurred twice at the fiducial stations in western china. These anomalies may be related to seismic activities of magnitudes about 6 in the Yunnan region on the North South seismic belt.

关键词：地壳运动 GPS观测与数据处理基准站位移时间序列分析位移结果

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Research Note

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Acta Seismologica Sinica(English Edition) 1996年第1期9卷 147-155页

作者： CUI YING ZHOU 1) , YU XIA ZHANG 2. , HONG WEI WANG 1) and LI QIANG JIAO 2. 1) seismological bureau of Shandong Province, Jinan 2.002.,{2. 2. center for analysis and prediction, SSB, beijing 100036,{2.

Ｃｏｍｐｒｅｈｅｎｓｉｖｅｉｎｄｉｃｅｓｏｆｅａｒｌｙｊｕｄｇｅｍｅｎｔｆｏｒｅａｒｔｈｑｕａｋｅｓｅｑｕｅｎｃｅｔｙｐｅｂｙｐａｔｅｒｎｒｅｃｏｇｎｉ┐ｔｉｏｎＣＵＩ－ＹＩＮＧＺＨＯＵ１）（周翠英），ＹＵ－ＸＩＡ... 详细信息

Ｃｏｍｐｒｅｈｅｎｓｉｖｅｉｎｄｉｃｅｓｏｆｅａｒｌｙｊｕｄｇｅｍｅｎｔｆｏｒｅａｒｔｈｑｕａｋｅｓｅｑｕｅｎｃｅｔｙｐｅｂｙｐａｔｅｒｎｒｅｃｏｇｎｉ┐ｔｉｏｎＣＵＩ－ＹＩＮＧＺＨＯＵ１）（周翠英），ＹＵ－ＸＩＡＺＨＡＮＧ２）（张宇霞），ＨＯＮＧ...

关键词： earthquake sequence pattern recognition comprehensive diagnostic index.

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Research on Algorithm M8 Applying to TIP prediction of china's Strong Earthquake Cases in the Past Decades

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Earthquake Research in china 1994年第4期8卷 4-10页

作者： Huang Deyu and Chen Yongcenter for analysis and {2.,SSB,beijing 100036,china State seismological bureau,beijing 100036,china

This paper offers a positive research result of TIP before 16 strong earthquakes in North and Southwest china and their nearby areas since 1979 by using improved algorithm *** result showed that 14 of them were determined to occur within the times of increased *** precaution occupies about 37% of the total space-time *** means we have made quite good results of intermediate-term prediction of strong *** the method could be used as one of the useful means of the intermediate-term prediction of strong earthquakes.

关键词： M8 algorithm Intermediate-term earthquake prediction

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