Integration of remotely sensed and seismicity data for geo-natural hazard assessment along the Red Sea Coast, Egypt
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S. I. GEOLOGY OF AFRICA
Integration of remotely sensed and seismicity data for geo-natural hazard assessment along the Red Sea Coast, Egypt Mostafa Kamel 1 & Mohamed Arfa 1 Received: 26 June 2020 / Accepted: 26 October 2020 # Saudi Society for Geosciences 2020
Abstract The flooding and seismic activity analysis clearly shows the urgent need for an evaluation planning program to mitigate hazard for the vital areas. The Red Sea coastal area is always exposed to the risk of flash floods and earthquakes; therefore, the management and determination of geo-hazard in these areas are critically important. A risk map was produced for the study area by integrated flash flooding and seismicity data. Several valuable data have been applied to accomplish this work which include ALOS-PALSAR, satellite images, and earthquake data. Seismic hazard assessment was performed using probabilistic earthquake hazard assessment; Results of the iso-acceleration maps and hazard curves for a return period of 475 years showed that the seismic hazard values increase from southern to northern parts. The morphometric parameter interpretations illustrate that 6 sub-basins (40% of total sub-basins) are of high-flooding hazardous, 5 sub-basins of moderate hazard (33.33%), and 4 of low hazard (26.66%). Finally, geo-hazard map results markedly increase from south to north in the study area. So, we recommend that some dams and channels should be constructed in vital sites along and at the end of the channel Wadi to protect it against flood hazards along the Red Sea Coast for long-term sustainable development without problems. These findings can be a potential guide for decision-makers in disaster geo-hazard reduction in this interest coastal area. Keywords Geo-natural hazard . Remote sensing . Seismicity data . Red Sea Coast . Egypt
Introduction The natural hazards resulted to several phenomena such as hydrological nature and seismic activities which may cause several problems such as death, property damage, and socioeconomic disruption system (UNISDR 2002). The Egyptian Red Sea coast is a subject of great interest from the Egyptian government especially the southern parts of the coast; this is due to its strategic importance for tourism purposes, economic fields, mineral resources, coral reefs, and surface and groundwater projects. Moreover, the study area is characterized by the El Sukari gold mine and the Wadi El Gemal protected area. Good planning of any development project requires a This article is part of the Topical Collection on New Advances and Research Results on the Geology of Africa * Mohamed Arfa [email protected]; [email protected] 1
GeologyDepartment. Faculty of Science, Al-Azhar University (Assiut), Assiut, Egypt
detailed study for geo-natural hazards such as seismic activities and flash flooding. They are considered, throughout the world, as a major natural disaster due to their frequency, intensity, and the associated damage. Water is considered one of the vital factors for a life; without it, the life is
