Assessment of
seismic possibility and magnitude, and zonation forecasting
of earthquake effect
in Hướng Hóa - Đăkrông districts, Quảng Trị province
Cao Đình Trọng, Nguyễn Văn Canh, Phan Thanh
Quang, Phan Thị Hiền, Lê Anh Tuấn
This
article describes the estimation of seismic pattern and hazards of the Hướng Hóa and Đăkrông districts, Quảng Trị province. The results have
shown that: There are three seismic sources in the Hướng Hóa and Đăkrông districts, Quảng Trị province with the following
characteristics: Cam LỘ seismic source with the width of 12km and maximum
magnitude of earthquake occurrence of 5.3 (W=12 km and Mmax=
5.3); Đăkrông-Huế
seismic
source (W=12km and Mmax=5.5); Hướng Hóa - A Lưới seismic source (W=12kmand Mmax=5.4); The ground acceleration (A) of the Hướng Hóa and Đăkrông districts are respectively:
The frequence of T=50 years, A = 75-110 cm/s2 (degree
VII of MSK-64); T= 200 years, A =95-145 cm/s2 (degree VII of
MSK-64); T= 500 years, A = 110-160 cm/s2 (degree VII-VIII of
MSK-64); T= 1 000 years, A = 120- 180 cm/s2 (degree VII-VIII of
MSK-64).
Người biên tập: PGS. TS Nguyễn
Hồng Phương.