Analysis of effects of the Laos earthquake on November 20th, 2019 to some continuously operation reference stations in northern Vietnam

  • Affiliations:

    1 Faculty of Civil Engineering, Ho Chi Minh City University of Technology, Vietnam National University Ho Chi Minh City, Vietnam
    2 Tuong Anh Science Technology Equipment Joint Stock Company, Ho Chi Minh City, Vietnam

  • *Corresponding:
    This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Received: 18th-Aug-2020
  • Revised: 26th-Sept-2020
  • Accepted: 31st-Oct-2020
  • Online: 31st-Oct-2020
Pages: 71 - 76
Views: 1377
Downloads: 508
Rating: 5.0, Total rating: 49
Yours rating


The earthquake hit the border of Laos and Thailand on November 20th, 2019 with a magnitude of 6,2, causing some vibrations in northern Vietnam even more than 400 km from the epicenter. In order to consider its impact on some of the permanent GNSS stations in the north Vietnam area, we used the precise point positioning method to process the GNSS data of these stations in 2 days 20 and 21/11/2019. The maximum deviation of coordinates between the 2 days at the 24 hour static solutions is 3,6 mm on the horizontal and 5,9 mm on the up component. These values are less than 2 times their root mean square errors. Therefore, we conclude that no change of location of CORS stations has been detected due to the impact of the earthquake.

How to Cite
Nguyen, L.Ngoc and Pham, D.Anh 2020. Analysis of effects of the Laos earthquake on November 20th, 2019 to some continuously operation reference stations in northern Vietnam (in Vietnamese). Journal of Mining and Earth Sciences. 61, 5 (Oct, 2020), 71-76. DOI:

Báo Tuổi Trẻ, (2019). Động đất mạnh tại Lào và Thái Lan, rung chấn lan tới Hà Nội. Số ra ngày 22 - 11 - 2019.

Böhm, J., Werl, B., and Schuh, H., (2006). Troposphere mapping functions for GPS and VLBI from ECMWF operational analysis data. Journal of Geophysical Research 111, B02406, DOI: 10.1029 /2005JB003629.

DOSM Vietnam, (2019).

Laurichesse, D., (2012). Phase Biases Estimation for Undifferenced Ambiguity Resolution, PPP-RTK and Open Standards Symposium, March 12 - 13, Frankfurt.

Nguyễn Ngọc Lâu, (2017a). Độ chính xác PPP có giải tham số đa trị trong khung tọa độ mới ITRF2014. Hội nghị Khoa học và Công nghệ lần thứ 15. Tổ chức tại Đại học Bách khoa TP. Hồ Chí Minh 10/2017, 47 - 54.

Nguyễn Ngọc Lâu, (2017b). Determination of ground displacement of 25 April 2015 Nepal earthquake by GNSS precise point positioning. Vietnam Journal of Earth Sciences 40(1), 17 - 24.

Nguyễn Ngọc Lâu, Phan Trọng Trịnh, Trần Văn Phong, Phạm Thái Bình, (2019). Ground displacement of the 6 July 2019 ridgecrest earthquake from the GNSS permanent stations. Vietnam Journal of Earth Sciences 41(4), 305 - 320.

Nguyễn Ngọc Lâu, Trần Trọng Đức, Dương Tuấn Việt, Đặng Văn Công Bằng, (2010). Automatic GPS precise point processing via internet. Báo cáo đề tài cấp Bộ B2010 - 30 - 33, 107.

Phan Trọng Trịnh, Ngô Văn Liêm, Trần Đình Tô, Nguyễn Văn Hướng, Vy Quốc Hải, Bùi Văn Thơm, Trần Văn Phong, Hoàng Quang Vinh, Nguyễn Quang Xuyên, Nguyễn Viết Thuận, Nguyễn Đăng Túc, Đinh Văn Thuận, Nguyễn Trọng Tấn, Bùi Thị Thảo, Nguyễn Việt Tiến, Lê Minh Tùng, Trần Quốc Hùng, (2015). Present day deformation in the east Vietnam sea and surrounding regions. Journal of Marine Science and Technology 15(2), 105 - 118. DOI:10.15625 /1859 - 3097/15/2/6499.

Thomas Nylen, Seth White, (2007). Online Precise Point Positioning Using the Natural Resources Canada Canadian Spatial Reference System (CSRS-PPP). UNAVCO.

USGS, (2019).

Zuheir Altamimi, Paul Rebischung, Laurent Métivier, and Xavier Collilieux, (2016). ITRF2014: A new release of the International Terrestrial Reference Frame modeling nonlinear station motions. Journal of Geophysical Research: Solid Earth 121, 6109 - 6131, DOI: 10.1002/ 2016JB013098.