Acta Geodaetica et Cartographica Sinica >

2015 , Vol. 44 >Issue 8: 858 - 865

DOI: https://doi.org/10.11947/j.AGCS.2015.20130566

Present-day Crustal Movement and Strain Rate in Guangxi Area from GPS Data

  • LIAO Chaoming ,
  • MA Yan ,
  • PAN Yuanjin ,
  • HUANG Xiangxiong
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  • 1. Surveying, Mapping and Geoinformation Archives of Guangxi Zhuang Autonomous Region, Nanning 530023, China;
    2. Chinese Society for Surveying, Mapping and Geoinformation, Beijing 100048, China;
    3. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    4. Guangxi Nonferrous Survey & Design Institute, Nanning 530023, China

Received date: 2014-01-02

  Revised date: 2015-05-07

  Online published: 2015-09-02

Supported by

Open Foundation of Guangxi Key Laboratory of Spatial Information and Geomatics(No.13-051-14-20);Special Fund by Guangxi Cultivate Academic and Technical Leaders in New Century;National Administration of Surveying, Mapping and Geoinformation Youth Academic and Technical Leaders Scientific Assignment Project(No.201352)

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Abstract

The 3D crustal movement velocities filed and strain parameters of Guangxi area are acquired in the coordinate frame of ITRF2005 with the multi-period GPS data from 1998 to 2010 analyzed by using GAMIT/GLOBK software, and the area deformation field and present-day construction mechanism are also discussed in this paper. From the GPS monitoring results, the crustal movement of Guangxi area coincides with south China movement in the South-East-East anticlockwise direction, the average vertical velocity value is 33.49 mm/a in ITRF2005 frame, the preponderant direction is N 109.3° E, the average horizon velocity value is +1.30 mm/a, and the trend becomes increasing from East to West of Guangxi province. The present-day strain status is extrusion in N 127.3°±4.8° E direction, the main maximum extrusion strain is -2.7±0.5×10-9/a with a tension effect in the N 37.3°±4.8° E direction, and the main maximum tension strain is 1.8±0.2×10-9/a. A more precise 3D present-day crustal velocity filed of Guangxi area is presented in this paper with the full analyzing of GPS data.

Key words： GPS; crustal movement; velocity filed; strain parameters

Cite this article

LIAO Chaoming , MA Yan , PAN Yuanjin , HUANG Xiangxiong . Present-day Crustal Movement and Strain Rate in Guangxi Area from GPS Data[J]. Acta Geodaetica et Cartographica Sinica, 2015 , 44(8) : 858 -865 . DOI: 10.11947/j.AGCS.2015.20130566

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