| 福建沿海、台湾海峡GPS观测分析及地球动力学特征研究 |
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| 引用本文： | 丁学仁,林继华,刘序俨,吴绍祖,陈琳.福建沿海、台湾海峡GPS观测分析及地球动力学特征研究[J].华南地震,2002,22(2):16-23. |
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| 作者姓名： | 丁学仁 林继华 刘序俨 吴绍祖 陈琳 |
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| 作者单位： | 福建省地震局,福建,福州,350003 |
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| 摘 要： | 利用 3期GPS联测结果所获得的福建沿海地壳水平运动信息 ,采用ITRF94全球框架为基础的GPS测站地壳运动模型及其处理软件 ,对所获得的观测数据进行处理和精度分析。得到福建省高精度的GPS测站大地坐标、边长及其位移矢量 ,其精度达到 1 7×10 - 8。计算了福建地壳运动速率、主应变率 ,东西与南北向线应变率、面应变率、剪应变率、大地转动率和最大剪应变率等值线并给出了它们的分布图象。根据多年形变和现今GPS观测资料 ,分析福建地壳垂直运动与水平运动 ,显示区域应力场优势分布特征。最后 ,对福建沿海及台湾海峡地壳动力学特征作了初步的探讨
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| 关 键 词： | 地壳运动 地球动力学 GPS测量 福建 全球定位系统 应变率 |
| 文章编号： | 1001-8662(2002)02-0016-08 |
| 修稿时间： | 2002年3月25日 |
The observation and analysis of GPS and the study of the geodynamiccharacteristic of the coast of Fujian and Taiwan Strait |
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| DING Xue-ren,LIN Jin-hua,LIU Xu-yan,WU Shao-zu,CHEN lin.The observation and analysis of GPS and the study of the geodynamiccharacteristic of the coast of Fujian and Taiwan Strait[J].South China Journal of Seismology,2002,22(2):16-23. |
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| Authors: | DING Xue-ren LIN Jin-hua LIU Xu-yan WU Shao-zu CHEN lin |
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| Abstract: | The construction and the deformation observation of Fujian GPS stations are reviewed in this paper. With the horizontal crustal movement data of the coast of Fujian given by the three-period GPS, we use the crustal movement model based on the global GPS frame of ITRF94 and the relative software to process the observed data and to make accuracy analysis. Thus we get geodetic coordinates, length of side and the displacement vector for Fujian the GPS stations.The observation accuracy is up to 1 7*10 -8 .In the mean time the crustal movement velocity, main rate of strain, rate of linear strain in EW and NS directions, rate of surface strain, rate of shear strain, rate of geodetic rotation, the contour of the maximum rate of shear strain are calculated, and their distribution maps are shown. Based on the deformation data of several years and the present observation of GPS, the horizontal and vertical crustal movement is analyzed, and the results show that the regional stress field presents the feature of dominant distribution. Finally, the crustal movement feature of Fujian coastal area and Taiwan Strait is preliminarily discussed. |
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| Keywords: | Crustal movement Geodynamics GPS measurement Coastal of Fujian |
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