SUMMARY

First research results on the present-day tectonic displacement rate in the East Sea

Phan Trọng Trịnh, Ngô Văn Liêm, Nguyễn Tuấn Anh, Vy Quốc Hải,
Trần Đình Tô, Nguyễn Văn Hướng, Hoàng Quang Vinh, Bùi Văn Thơm,
Nguyễn Đăng Túc, Nguyễn Quang Xuyên, Vũ Tuấn Hùng, Nguyễn Huy Thịnh,
Trần Quốc Hùng, Lê Minh Tùng, Bùi Thị Thảo, Nguyễn Việt Tiến, Đinh Văn Thế

This paper presents new research results on the present-day tectonic displacement in the East Sea based on GPS measurements during 2007-2008 years. The method has been based on the analysis of GPS data in some European stations with Bernese software, version 5.0. Our calculation coincides with the resultS obtained by the Astronomical Institute, University of Bern, Switzerland, for the same input data. The GPS stations Láng, Bạch Long Vĩ, Song Tử Tây, Côn Đảo have been associated with GPS stations of the International GPS services, such as BACO, PIMO, KUNM of the International Terrestrial Reference Frame ITRF2005/IGS05. The results indicate that the Láng Station moves eastward with slip rate of 43.4 mm/y, southward with slip rate of 8.3 mm/y; the Bạch Long Vĩ one – 32.2 mm/y eastward and 8.3 mm/y southward; the Song Tử Tây one – 14.2 mm/y eastward and 14.2 mm/y southward; the Côn Đảo one – 16.1 mm/y eastward and 12.1 mm/y southward. The calculation errors for both directions vary about 0.5-0.6 mm/y.

Ngày nhận bài: 14/7/2008

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Người nhận xét: Trần Văn Trị