The present strain rate of Quang Nam - Quang Ngai and the surrounding region

Bui Nhi Thanh, Tran Van Phong, Nguyen Van Diep, Phan Trong Trinh
Author affiliations


  • Bui Nhi Thanh 1-Institute of Marine Geology and Geophysics, VAST, Hanoi, Vietnam; 2-Graduate University of Science and Technology, VAST, Hanoi, Vietnam
  • Tran Van Phong 1-Graduate University of Science and Technology, VAST, Hanoi, Vietnam; 2-Institute of Geological Sciences, VAST, Hanoi, Vietnam
  • Nguyen Van Diep Institute of Marine Geology and Geophysics, VAST, Hanoi, Vietnam
  • Phan Trong Trinh 1-Graduate University of Science and Technology, VAST, Hanoi, Vietnam; 2-Institute of Geological Sciences, VAST, Hanoi, Vietnam



Quang Nam, Quang Ngai, present strain rate, tectonic, GNSS


Studying the present strain rate is significant in determining the characteristics and origin of geological anomalies in the region. Tectonic strain occurs under the influence of various factors, especially tectonic forces, and only a few cases of deformation occur at speeds observable by humans. This research uses velocity data from GNSS measurements in Quang Nam - Quang Ngai and surrounding regions to assess present tectonic strain. The combination of methods used in this study includes calculating the ITRF Earth-fixed frame to minimize errors, the method of relative velocity calculation to compare the speed variations between station positions, and the deformation calculation method using the QOCA software developed by NASA's Jet Propulsion Laboratory (JPL). The calculated results show that the coastal areas of the study have relatively low strain rates with the principal strain rate <15 nano-strain/year, the magnitude of deformation is always less than 7.5 nano-strain/year, and the area is conducive to the development of dominant reverse faulting.


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How to Cite

Bui Nhi, T., Tran Van, P., Nguyen Van, D., & Phan Trong, T. (2024). The present strain rate of Quang Nam - Quang Ngai and the surrounding region. Vietnam Journal of Earth Sciences.




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