Flash flood hazard assessment in the Amlog Valley Basin, North-West Galala City, Egypt, based on a morphometric approach

IF 2.3 Q2 REMOTE SENSING Applied Geomatics Pub Date : 2023-12-18 DOI:10.1007/s12518-023-00539-2
Mohamed Alkhuzamy Aziz, Ali Hagras
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Abstract

One of the natural threats that arises as a result of temporary surface runoff is flooding, which has a large amount of solid material, a high level of water in the streams, a sudden appearance, and a rapid flow velocity. The Wadi Amlog Basin is characterized by the lack of rain and the prevalence of drought, but it is exposed to sudden rains that lead to surface runoff in its dry valleys in a way that results in threats to infrastructure and spatial development in the coastal region. Within this framework, the purpose of this research is to investigate the possible areas of flood hazard by using GIS techniques based on morphometric assessment parameters to determine the risk level of specified subbasins from a digital elevation model (DEM) using remotely sensed SRTM images. The case study results utilized five evaluation degrees, very low, low, moderate, high, and very high, to interpret the flood danger, in a way that contributes to protecting the places most affected by the dangers of floods in the subbasins in the study area.

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基于形态计量学方法的埃及加拉拉市西北部 Amlog 谷盆地山洪灾害评估
洪水是临时地表径流造成的自然威胁之一,它具有固体物质多、溪流水位高、突然出现和流速快等特点。瓦迪阿姆洛格盆地的特点是少雨和干旱,但也会受到突发性降雨的影响,导致其干旱河谷中的地表径流,从而对沿岸地区的基础设施和空间发展造成威胁。在此框架内,本研究的目的是利用基于形态评估参数的地理信息系统(GIS)技术来调查可能的洪水危害区域,从而利用遥感 SRTM 图像从数字高程模型(DEM)中确定特定子流域的风险等级。案例研究结果利用五个评估等级(极低、低、中、高和极高)来解释洪水危险,从而有助于保护研究区内受洪水危险影响最严重的子流域。
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来源期刊
Applied Geomatics
Applied Geomatics REMOTE SENSING-
CiteScore
5.40
自引率
3.70%
发文量
61
期刊介绍: Applied Geomatics (AGMJ) is the official journal of SIFET the Italian Society of Photogrammetry and Topography and covers all aspects and information on scientific and technical advances in the geomatics sciences. The Journal publishes innovative contributions in geomatics applications ranging from the integration of instruments, methodologies and technologies and their use in the environmental sciences, engineering and other natural sciences. The areas of interest include many research fields such as: remote sensing, close range and videometric photogrammetry, image analysis, digital mapping, land and geographic information systems, geographic information science, integrated geodesy, spatial data analysis, heritage recording; network adjustment and numerical processes. Furthermore, Applied Geomatics is open to articles from all areas of deformation measurements and analysis, structural engineering, mechanical engineering and all trends in earth and planetary survey science and space technology. The Journal also contains notices of conferences and international workshops, industry news, and information on new products. It provides a useful forum for professional and academic scientists involved in geomatics science and technology. Information on Open Research Funding and Support may be found here: https://www.springernature.com/gp/open-research/institutional-agreements
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