Acta Geodaetica et Cartographica Sinica >

2017 , Vol. 46 >Issue 9: 1080 - 1087

DOI: https://doi.org/10.11947/j.AGCS.2017.20160628

Thermoelastic Seasonal Deformation in Chinese Mainland

  • TAN Weijie ,
  • XU Xueqing ,
  • DONG Danan ,
  • CHEN Junping ,
  • WU Bin
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  • 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

Received date: 2016-12-26

  Revised date: 2017-05-20

  Online published: 2017-10-12

Supported by

Crustal Movement Observation Network of China;The National Natural Science Foundation of China (Nos. 11373017;11673049;11673050;11273046);The Science and Technology Commission of Shanghai (No. 15511101602);100 Talents Programme of the Chinese Academy of Sciences;The National High Technology Research and Development Program of China (No. 2014AA123102);State Key Laboratory of Geodesy and Earth's Dynamics Grant(No. SKLGED2016-5-1-EZ)

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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 Mongolia, China. Its seasonal amplitude of surface deformation is about~2.293mm. and the site HIYS in Hainan is the least affected. The seasonal amplitude of surface deformation is about~0.177mm. 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.

Key words： CMONOC; annual deformation; temperature changes; thermoelastic deformation

Cite this article

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 . DOI: 10.11947/j.AGCS.2017.20160628

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