Acta Geodaetica et Cartographica Sinica >

2016 , Vol. 45 >Issue S2: 147 - 155

DOI: https://doi.org/10.11947/j.AGCS.2016.F036

Co-seismic Displacement of the 25 April 2015 Nepal Ms8.1 Earthquake Effects on the China's Mount Everest Area Derived from GNSS Data Using the PPP Network Solution by UPD Ambiguity Fixed Technology

  • WANG Hu ,
  • LI Jiancheng ,
  • DANG Yamin ,
  • Cheng Yingyan ,
  • WANG Jiexian ,
  • YANG Qiang ,
  • XU Changhui ,
  • ZHANG Shoujian
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  • 1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    2. Chinese Academy of Surveying & Mapping, Beijing 100830, China;
    3. College of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China

Received date: 2016-11-25

  Revised date: 2016-12-20

  Online published: 2017-05-20

Supported by

The National Natural Science Foundation of China (Nos.41404034;41674031;41474011;41304030);The China Postdoctoral Science Foundation(No.2016M590715);Key Project of China national programs for Research and Development(No.2016YFB0501405);Special Research Grant for Surveying and Mapping Non-profit Public Service(No.B1503);The National High-tech Research and Development Program of China (863 Program) (No.2015AA124001)

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Abstract

Co-seismic displacement of the GNSS stations in areas surrounding the earthquake are accurately obtained using UPD (uncalibrated phase delay) ambiguity fixed technology without having to consider the effects of earthquake on the GNSS baseline calculating. During the 25 April 2015 Nepal Ms8.1 seismological GNSS data from the National Datum Engineering of China, the Crustal Movement Observation Network of China and the Mount Everest GNSS stations are calculated using UPD ambiguity fixed technology, then co-seismic displacement field of the China's Mount Everest and surrounding areas are derived and analyzed. Firstly, the UPD of wide-lane and narrow lane are estimated using the uniform distribution National GNSS and the surrounding IGS stability stations away from the seismic zones. Secondly, the float carrier phase ambiguities from each GNSS station in the seismic zones are fixed using the UPD of wide-lane and narrow until all the GNSS station are completed. Then whole network GNSS station coordinates are just only estimated using the accurately phase observations without ambiguity form all the GNSS stations. The GNSS data from IGS stations are used to verify the precision of the above method. Finally, Co-seismic displacement field of the China's Mount Everest are derived and particularly analyzed. From 2005 to 2015 year the displacement of China's Mount Everest are showed. Meanwhlile, this paper provides a precise and reliable method to monitor earthquake.

Key words： uncalibrated phase delay; ambiguity; precise point positioning; earthquake; co-seismic displacement

Cite this article

WANG Hu , LI Jiancheng , DANG Yamin , Cheng Yingyan , WANG Jiexian , YANG Qiang , XU Changhui , ZHANG Shoujian . Co-seismic Displacement of the 25 April 2015 Nepal Ms8.1 Earthquake Effects on the China's Mount Everest Area Derived from GNSS Data Using the PPP Network Solution by UPD Ambiguity Fixed Technology[J]. Acta Geodaetica et Cartographica Sinica, 2016 , 45(S2) : 147 -155 . DOI: 10.11947/j.AGCS.2016.F036

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