SUMMARY

Some results of research on geological hazards in the coastal zone of Ninh Thuận Province

Vũ Trường Sơn, Đỗ Tử Chung, Trịnh Nguyên Tính

Basic investigation on geology was carried out at various scales: 1:50,000 (near shore); 1:100,000 (in 0-30 m water depth) and 1:500,000 (in 30-100 m water depth) in the coastal zone of Ninh Thuận Province. The data from survey on geological hazards of this area was still restricted because there still was not adequate investment. However, the results of datum analysis showed several types of implicit hazards as follows:

- Influence of tectonic faults: 109-110⁰ Longitudinal Fault system; Minh Hải - Thuận Hải Fault system with active sign in Pleistocene; modern faults along the seashore. Faults may cause earthquakes with maximum magnitude of 7.5 Richter degree.

- Tsunami occurrence caused by fault activity, volcanic eruptions and landslide on the sea floor; erosiona ditch and mud flow occurring in coastal areas; seashore erosion caused by wave and submarine landslide.

It is necessary to research and investigate the impact of these geological hazards to the nuclear power project in Ninh Thuận Province aiming to have an optimal design to ensure absolute safety, at the same time to reduce construction costs.

.Người biên tập: TSKH. Nguyễn Biểu