| 温度变化对中国大陆三维周年位移的影响 |
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| 引用本文： | 谭伟杰,许雪晴,董大南,陈俊平,吴斌.温度变化对中国大陆三维周年位移的影响[J].测绘学报,2017,46(9):1080-1087. |
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| 作者姓名： | 谭伟杰 许雪晴 董大南 陈俊平 吴斌 |
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| 作者单位： | 1. 中国科学院上海天文台, 上海 200030;2. 华东师范大学空间信息与定位导航上海高校工程研究中心, 上海 200241;3. 中国科学院大学, 北京 100039 |
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| 基金项目： | 中国大陆构造环境监测网络，国家自然科学基金(11373017;11273046)上海市科学技术委员会科研计划，中科院百人计划，国家高863 计划，大地测量与地球动力学国家重点实验室开放基金，Crustal Movement Observation Network of China，The National Natural Science Foundation of China，The Science and Technology Commission of Shanghai，100 Talents Programme of the Chinese Academy of Sciences，The National High Technology Research and Development Program of China，State Key Laboratory of Geodesy and Earth's Dynamics Grant |
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| 摘 要： | 除了地表质量重新分布外,地表温度变化是影响地表周年变化的另一重要成因。本文利用全球温度变化数据,基于三维全空间热弹性形变模型,计算温度变化在中国大陆引起的地表热弹性形变,并讨论它对中国大陆三维周年位移的影响。结果表明,温度变化引起的地表周年变化振幅在毫米量级。中国大陆构造环境监测网络(简称:陆态网络)GPS台站受地表温度变化影响最大的台站是HLAR(海拉尔),东向、北向以及垂向的周年振幅矢量和为~2.293mm;影响最小的台站是HIYS(永暑礁),东向、北向以及垂向的周年振幅矢量和为~0.177mm。为了说明温度变化对地表周年形变的影响,本文联合GRACE以及物质负荷模型(MODEL)研究中国大陆地表三维周年位移。考虑温度变化后的MODEL、GRACE获取的地表周年形变在东向、北向、垂向的周年信号分别改进了6%、6%、2%;16%、5%、15%。结果表明,温度变化是物质负荷以外引起大陆地表形变的重要因素。
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| 关 键 词： | 陆态网络 周年形变 温度变化 热弹性形变 |
| 收稿时间： | 2016-12-26 |
| 修稿时间： | 2017-05-20 |
Thermoelastic Seasonal Deformation in Chinese Mainland |
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| TAN Weijie,XU Xueqing,DONG Danan,CHEN Junping,WU Bin.Thermoelastic Seasonal Deformation in Chinese Mainland[J].Acta Geodaetica et Cartographica Sinica,2017,46(9):1080-1087. |
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| Authors: | TAN Weijie XU Xueqing DONG Danan CHEN Junping WU Bin |
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| Institution: | 1. Shanghai Astronomical Observatory, the Chinese Academy of Sciences, Shanghai 200030, China;2. Shanghai Research Center for Space Information and GNSS, East China Normal University, Shanghai 200241, China;3. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this paper ,we explore the thermoelastic seasonal deformation in Chinese mainland based on the 260 GPS sites of crustal movement observation network of China (CMONOC) .The results show that the change of land surface temperature can induce remarkable surface deformation in China .The most affected site is HLAR in Inner Mongoli a ,China .Its seasonal amplitude of surface deformation is about ~22.93 mm . and the site HIYS in Hainan is the least affected .The seasonal amplitude of surface deformation is about~01.77 mm .Applying the thermoelastic seasonal deformation information in GRACE data analysis and the Mass loading models (MODEL) ,refined three-dimensional seasonal deformation map are derived .Taking GPS measurements as references,refined results show that the annual deformation derived from the MODEL and the GRACE data have been improved by about 6% ,6% ,2% ;16% ,5% ,15% in the east ,north and height components respectively . |
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| Keywords: | CMONOC annual deformation temperature changes thermoelastic deformation |
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