| 利用连续GPS观测数据分析长江三角洲地区地壳变形 |
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| 引用本文： | 吴继忠, 朱丽强, 龚俊. 利用连续GPS观测数据分析长江三角洲地区地壳变形[J]. 武汉大学学报 ( 信息科学版), 2015, 40(10): 1324-1328. DOI: 10.13203/j.whugis20130832 |
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| 作者姓名： | 吴继忠 朱丽强 龚俊 |
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| 作者单位： | 1.南京工业大学测绘学院, 江苏 南京, 211816;;2.苏州工业园区测绘地理信息有限公司, 江苏 苏州, 215027;;3.浙江省地震局, 浙江 杭州, 310013 |
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| 基金项目： | 国家自然科学基金资助项目(41504024);江苏省测绘地理信息科研资助项目(JSCHKY201413);江苏省博士集聚计划资助项目(201342)。 |
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| 摘 要： | 利用长江三角洲区域内19个GPS连续运行参考站2007～2013年间的观测数据,计算得到了该区域ITRF2005参考框架下的三维速度场、应变参数及区域参考框架下的速度场。结果表明,在ITRF2005框架下,水平方向平均速率为33.97 mm/a,优势方向为NE 111.5°;相对于欧亚板块的水平方向平均速率为9.36 mm/a,优势方向为NE 85.6°;高程方向以沉降为主,最大沉降速率为15.22 mm/a,平均沉降速率为4.7 mm/a;该区域块体以N 29.4° E的拉张为主,达到2.4×10-9/a,同时兼有N 119.4° E的挤压,达到1.3×10-9/a。
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| 关 键 词： | 连续运行参考站 坐标时间序列 速度场 应变参数 |
| 收稿时间： | 2013-12-26 |
An Analysis of the Crustal Deformation in the Yangtze River Delta Area Using Continuous GPS Observations |
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| WU Jizhong, ZHU Liqiang, GONG Jun. An Analysis of the Crustal Deformation in the Yangtze River Delta Area Using Continuous GPS Observations[J]. Geomatics and Information Science of Wuhan University, 2015, 40(10): 1324-1328. DOI: 10.13203/j.whugis20130832 |
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| Authors: | WU Jizhong ZHU Liqiang GONG Jun |
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| Affiliation: | 1.College of Geomatics Engineering, Nanjing Tech University, Nanjing 211816, China;;2.Suzhou Industry Park Surveying, Mapping and Geoinformation Co., Ltd., Suzhou 215027, China;;3.Earthquake Administration of Zhejiang Province, Hangzhou 310013, China |
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| Abstract: | The GPS observations from 19 continuously operating reference stations distributed in the Yangtze River delta area from 2007 to 2013 were processed using the GAMIT/GLOBK software package, and the estimated coordinate time series were used to determine the velocities of reference stations in the ITRF2005 frame. Strain parameters and velocities relative to the Eura-Plate were also estimated. These results show that Yangtze River delta area moves at 33.97 mm·a-1 in the NE 111.5° direction in the ITRF2005 frame, while the average horizontal velocity relative to the Eura-Plate is 9.36 mm·a-1 in the direction of NE 85.6°. In the vertical direction, the maximum subsidence rate is 15.22 mm·a-1, and the average rate of subsidence is 4.7 mm·a-1. The maximum extension rate is 2.4×10-9/a and with the compressing rate of 1.3×10-9/a in the direction of N 119.4° E. |
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| Keywords: | continuously operating reference stations coordinates time series velocity field strain parameters |
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