Nghiên cứu ứng dụng công nghệ viễn thám trong đánh giá rủi ro do lũ, ngập lụt cho các đô thị miền núi phía Bắc

Abstract

The Northern region is a large area, rugged terrain, or fragmentation, especially or affected by extreme natural disasters such as flash floods, floods, landslides. In recent years, this region often faces with extreme natural disasters, which has a significant impact on social economic conditions. In particular, flood is a typical natural disaster that often threatens the lives of people and the socio-economic development in the region, causing many material and spiritual damages. Therefore, assessing risks of flood is a very interesting area for researchers. Remote sensing technology with many advantages is a key tool in managing and monitoring natural resources, environment and natural disasters today. The study team used remote sensing technology to calculate and assess the vulnerability and propose a classification to assess exposure, thereby developing a flood risk map for the five cities, including: Yen Bai, Cao Bang, Ha Giang, Lang Son and Son La. The results provide an overview of the level of risk in the five cities, contributing to the development of a database to help assess, monitor and forecast risks of flood in particular and the management, warning and prevention of hazards, natural disasters in general. The results show that high and very high levels of risk occur most frequently in Yen Bai city, Cao Bang city with the lowest high and very high level of risk compared with other cities.