DOI: 10.1007/s11069-020-04481-z
论文题名: Flood susceptibility mapping using a geomorphometric approach in South Australian basins
作者: Ahmed A. ; Hewa G. ; Alrajhi A.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 1 起始页码: 629
结束页码: 653
语种: 英语
中文关键词: Flood
; GIS
; Morphometric analysis
; Remote sensing
; South Australia
英文关键词: decision making
; flood
; GIS
; remote sensing
; Shuttle Radar Topography Mission
; terrain
; topographic mapping
; watershed
; Indian Ocean
; South Australian Basin
英文摘要: Watershed characteristics and their hydrological responses can have severe effects on the occurrence and extent of floods. Therefore, this study focuses on the integration of geospatial techniques and remote sensing data to identify watershed terrain characteristics and evaluate the influence of these characteristics on flood susceptibility in South Australia. Data from the Shuttle Radar Topography Mission (SRTM) and geologic and topographic maps and a geographic information system (GIS) were used to delineate drainage basins, measure morphometric parameters and link different parameters to evaluate the degree of flood vulnerability. Depending on their relations to the flood hazards, the morphometric parameters were categorized into two groups; then, a rank score was assigned to each group. Finally, the flood susceptibility of the basins was visualized, and the basins were classified into low, intermediate and high flood hazard areas. The results show that approximately 45.7, 44.7 and 9.7% of the study area is at risk of high, medium and low degrees of flooding, respectively. The results were validated through secondary data relating to historic floods. The causes of flooding were analysed using rainfall and road density data, while the consequences of flooding were verified by the population distribution across the study area. The findings of this study can be used to support decision-makers in planning and investing in mitigation measures, especially in highly susceptible areas of South Australian basins. © 2021, Crown. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168866
Appears in Collections: 气候变化与战略
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作者单位: Centre for Scarce Resources and Circular Economy (ScaRCE), UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA P2-50, Australia; Geology Department, Division of Water Resource, Desert Research Center, Mathaf El Matariya Street, Cairo, 11753, Egypt; King Abdulaziz City for Science and Technology, King Abdullah Road, Riyadh, 11442, Saudi Arabia
Recommended Citation:
Ahmed A.,Hewa G.,Alrajhi A.. Flood susceptibility mapping using a geomorphometric approach in South Australian basins[J]. Natural Hazards,2021-01-01,106(1)