Please use this identifier to cite or link to this item: http://dspace.agu.edu.vn:8080/handle/AGU_Library/11474
Nhan đề: A robust early ưarning system for preventing flash floods in mountainous area in Vietnam
Tác giả: Thanh, Hoang Van
Chou, Tien Yin
Thach, Nguyen Ngoc
Others
Từ khoá: Early warning
Flood
Flash floods
Analytic hierarchy process
Threshold
Disaster management
Năm xuất bản: 2019
Tùng thư/Số báo cáo: ISPRS International Journal of Geo-Information;pp. 1 - 14
Tóm tắt: The early-warning model for flash floods is based on a hydrological and geomorphological concept connected to the river basin, with the principle that flash floods will only occur where there is a high potential risk and when rainfall exceeds the threshold. In the model used to build flash-floods risk maps, the parameters of the basin are analyzed and evaluated and the weight is determined using Thomas Saaty’s analytic hierarchy process (AHP). The flash-floods early-warning software is built using open source programming tools. With the spatial module and online processing, a predicted precipitation of one to six days in advance for iMETOS (AgriMedia—Vietnam) automatic meteorological stations is interpolated and then processed with the potential risk maps (iMETOS is a weather-environment monitoring system comprising a wide range of equipment and an online platform and can be used in various fields such as agriculture, tourism and services). The results determine the locations of flash floods at several risk levels corresponding to the predicted rainfall values at the meteorological stations. The system was constructed and applied to flash floods disaster early warning for Thuan Chau in Son La province when the rainfall exceeded the 150 mm/d threshold. The system initially supported positive decision-making to prevent and minimize damage caused by flash floods.
Định danh: http://www.mdpi.com/2220-9964/8/5/228.
http://dspace.agu.edu.vn:8080/handle/AGU_Library/11474
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