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Determination of tectonic velocities of some continuously operating reference stations (CORS) in Vietnam 2016-2018 by using precise point positioning

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posted on 2023-05-21, 03:11 authored by Lau, NN, Richard ColemanRichard Coleman, Hoa, HM
Determining the speed of tectonic plate displacement helps us to better understand tectonic activities of the area, and is a prerequisite to help forecast earthquakes. The determination of tectonic plate displacement by GNSS technology in Vietnam has been conducted since the 2000s, mainly using the relative positioning technique. The increasing accuracy of precise point positioning technique, and the number of CORS in Vietnam, will facilitate the accurate determination of tectonic velocities. Based on the GNSS data of some CORSs in Vietnam from 2016-2018, we have determined accurately their three-dimensional coordinates using a precise point positioning technique. After modeling periodic variations on the time series, we calculated the tectonic movement rate of 7 Vietnamese stations and 3 other stations in the region. Through analysis and comparison with other geology/plate motion models and GPS results, we conclude that this result is reliable. The velocity of tectonic motion in the North, East and Up components of Ha Noi, Da Nang and Ho Chi Minh City are respectively (-13.1, +32.8, -1.3), (-9.9, +31.0, +2.6) and (-10.3, +26.9, +2.7) mm/year.

History

Publication title

Vietnam Journal of Earth Sciences

Volume

43

Pagination

1-12

ISSN

2615-9783

Department/School

Institute for Marine and Antarctic Studies

Publisher

Vietnam Academy of Science and Technology

Place of publication

Vietnam

Rights statement

© 2021 Vietnam Academy of Science and Technology

Repository Status

  • Open

Socio-economic Objectives

Expanding knowledge in the earth sciences

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