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https://dspace.ctu.edu.vn/jspui/handle/123456789/43042
Title: | Contemporary movement of the Earth’s crust in the Northwestern Vietnam by continuous GPS data |
Authors: | Le, Huy Minh Vu, Tuan Hung Hu, Jyr-Ching Nguyen, Le Minh Huang, Bor-Shouh Chen, Horng-Yue Nguyen, Chien Thang Nguyen, Thanh Ha Le, Truong Thanh Nguyen, Thi Mai Pham, Thi Thu Hong |
Keywords: | Crustal movement GPS continuous data IGS14 Northwestern Vietnam GAMIT/GLOBK |
Issue Date: | 2020 |
Series/Report no.: | Vietnam Journal of Earth Sciences;Vol. 42, No. 04 .- P.334-350 |
Abstract: | The paper presents an estimation of the Earth’s crustal motion from the continuous GPS data at 6 stations (MTEV, MLAY, DBIV, TGIV, SMAV and SLAV) in the Northwestern and at PHUT (Hanoi) station using GAMIT/GLOBK software. The absolute displacements of the Earth’s crust at 7 stations in the IGS14 frame are respectively: 34.10±0.71 mm/yr (DBIV), 34.31±0.65 mm/yr (PHUT), 34.51±0.75 mm/yr (SMAV), 34.55±0.80 mm/yr (MLAY), 34.80±0.72 mm/yr (TGIV), 34.93±0.99 mm/yr (SLAV) and 35.59±0.73 mm/yr (MTEV), in the southeastward with the azimuth range 104-108°. The Son La fault is a right-lateral slip fault with a shear amplitude of ~1.5 mm/yr. The Lai Chau-Dien Bien fault is a left-lateral slip fault with a shear amplitude of ~1.9 mm/yr. Although the absolute velocities at the DBIV, SMAV, SLAV, TGIV and MLAY stations are evaluated with the error <1 mm/yr, the relative displacement on the Ma River fault is of ~0.5 mm/yr, and it seems that we still do not have a reliable assessment of the slip rate on the Ma River right-lateral slip fault. |
URI: | https://dspace.ctu.edu.vn/jspui/handle/123456789/43042 |
ISSN: | 0866-7187 |
Appears in Collections: | Vietnam journal of Earth sciences |
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