| Crustal movement in Chinese mainland observed from 1998 to 1999 |
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| 作者姓名： | 顾国华 牛红叶 郑贵明 许永江 孟国杰 孙世英 方颖 |
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| 作者单位： | GU Guo-hua NIU Hong-ye ZHENG Gui-ming XU Yong-jiang Meng Guo-jie SUN Shi-ying FANG Ying Data Center for the Crustal Movement Observation Network of China，Center for Analysis and Prediction，China Seismological Bureau，Beijing 100036，China |
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| 基金项目： | National Development and Programming Project for Key Basic Researches (95-13-03-07). |
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| 摘 要： | IntroductionTheCrustalMovementObservationNetworkofChina(CMONOC)isoneofmajorscientificprojectsinChinaduringthe9thFive-YearPlan.ThefirstGPSobservationsof25fiducialstationsand56basicstationsinthenetworkwerecompletedfromAugust26toSeptember6,1998andallthe81stationswereobservedsimultaneously.25fiducialstationshavebeenincontinuousoperationsincelateMarch1999.Inaddition,dataofcontinuousobservationfromtheIGS(InternationalGPSService)stationXIANinXi(anarealsoavailable.Figure1showsthelocation…
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| 收稿时间： | 27 October 1999 |
| 修稿时间： | 21 August 2000 |
Crustal movement in Chinese mainland observed from 1998 to 1999 |
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| GU Guo-hua,NIU Hong-ye,ZHENG Gui-ming,XU Yong-jiang,Meng Guo-jie,SUN Shi-ying,FANG Ying.Crustal movement in Chinese mainland observed from 1998 to 1999[J].Acta Seismologica Sinica(English Edition),2000,13(6):599-606. |
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| Authors: | GU Guo-hua NIU Hong-ye ZHENG Gui-ming XU Yong-jiang Meng Guo-jie SUN Shi-ying FANG Ying |
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| Institution: | Data Center for the Crustal Movement Observation Network of China, Center for Analysis and Prediction, China Seismological Bureau, Beijing 100036, China |
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| Abstract: | In this paper, GPS observations during 1998 to 1999 at fiducial stations in the Crustal Movement Observation Network of China (CMONOC) and GPS observation data processing with Bernese Software are briefly introduced. The processed results of crustal movement in the network during the period from early September 1998 to early July 1999, including the displacements at each fiducial station and strains in different part of the network, are discussed in detail. During the above mentioned period of observations, the eastern part of China was relatively stable. In contrast, the southwest part of China moved northwards about 17 mm with a dominant compression in NNE; the northwestern part of China moved northwestwards about 11 mm; and the Yunnan area moved southwards about 14 mm. The North-South seismic belt in the middle part of China is a belt of strong shear deformation. The maximum principal strain in the network is 2.9(10(8. The observation result shows that the northward push by the Indian Plate has still played the dominant role in the crustal movement in China. |
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| Keywords: | crustal movement GPS fiducial station displacement str |
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