GEOMORPHIC FEATURES OF THE THUẬN CHÂU AREA,
SƠN LA PROVINCE AND FLASH FLOOD GEOHAZARD

NGUYỄN XUÂN NAM¹, HẠ VĂN HẢI ²,  NGUYỄN ĐẠI TRUNG¹

¹Institute of Geological Sciences and Minerals, Thanh Xuân, Hà Nội.
²Hà Nội University of Mining and Geology, Đông Ngạc, Từ Liêm, Hà Nội

Abstract: This article presents research results on the flash flood geohazard basing on the analysis of geomorphic elements and application of Analytic Hierarchy Process (AHP), proposed in 1980 by Thomas L. Saaty. It is the method of pairwise comparison to rank decisive methods and to select satisfactory options. The results have been helping to establish the map of flash flood risk zoning of the Thuận Châu area, Sơn La Province, in order to bring out methods of prevention and orientation for the planning of socio-economic development of the Sơn La Province.