SUMMARY

Assessment of seismic possibility and magnitude, and zonation forecasting

of earthquake effect in Hướng Ha - Đăkrng districts, Quảng Trị province

Cao Đnh Trọng, Nguyễn Văn Canh, Phan Thanh Quang, Phan Thị Hiền, L Anh Tuấn

 

This article describes the estimation of seismic pattern and hazards of the Hướng Ha and Đăkrng districts, Quảng Trị province. The results have shown that: There are three seismic sources in the Hướng Ha and Đăkrng 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); Đăkrng-Huế seismic source (W=12km and Mmax=5.5); Hướng Ha - A Lưới seismic source (W=12kmand Mmax=5.4); The ground acceleration (A) of the Hướng Ha and Đăkrng 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 bin tập: PGS. TS Nguyễn Hồng Phương.