Horizontal crustal movement in Chinese mainland from 1999 to 2001 |
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| Authors: | Gu Guo-hua Fu Yang and Wang Wu-xing |
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| Institution: | (1) Institute of Earthquake Science, China Earthquake Administration, 100036 Beijing, China;(2) Xi’an Institute of Surveying and Mapping, 710054 Xi’an, China |
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| Abstract: | The paper introduces the horizontal crustal movement obtained from GPS observations in the regional networks (including the
basic network and the fiducial network) of the Crustal Movement Observation Network of China (CMONOC) carried out in 1999
and 2001. This paper is characterized by the acquisition of the horizontal displacement velocities during the period from
1999 to 2001 at the observation stations in the regional networks with datum definition of a group of stable stations with
small mutual displacements in east China. Based on the most detailed map of horizontal crustal movement in Chinese mainland,
the division of blocks, their displacements and deformations are studied. An approach to analysis of the intensity of the
horizontal crustal deformation is proposed. The general characteristics of the recent horizontal crustal movement in Chinese
mainland and that before the Kunlunshan earthquake of M=8.1 on November 14, 2001 are analyzed.
Foundation item: The National Development and Programming Project for Key Basic Research (95-13-03-07). |
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| Keywords: | crustal movement GPS displacement block regional network |
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