Acta Geodaetica et Cartographica Sinica ›› 2022, Vol. 51 ›› Issue (10): 2107-2116.doi: 10.11947/j.AGCS.2022.20220308

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GNSS landslide monitoring aligned to regional reference frames

WANG Guoquan1, BAO Yan2   

  1. 1. Department of Earth and Atmospheric Sciences, University of Houston, Houston 77024, U. S.;
    2. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • Received:2022-05-29 Revised:2022-09-06 Published:2022-11-05
  • Supported by:
    The National Natural Science Foundation of China (No. 51829801)

Abstract: Regional reference frames are the critical geodetic infrastructure for realizing high-accuracy crustal deformation and long-term landslide monitoring. According to the published results in active tectonic-block zonation and long-term GNSS observations, the authors divide China into seven “rigid-frame blocks” (or “rigid blocks”) and intend to establish the stable regional reference frame series covering the entire land and sea areas of China: Northeast, North, South, Northwest, Qinghai-Tibet, Sichuan-Yunnan, and South China Sea reference frames. This article introduces the method for realizing the coordinate transformation from the global reference frame (IGS14) to regional reference frames and exemplifies the applications of the North China Reference Frame (NChina20) and the South China Reference Frame (SChina20) in long-term landslide monitoring and initial slide automatic detection.

Key words: GNSS, regional reference frame, landslide monitoring, hidden landslide, initial slide automatic detection

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