1 ABSTRACT
Natural Disasters occur frequently around the world, and their incidence and intensity seem to be increasing
in recent years. The Disasters such as cyclones and floods often cause significant loss of life, large-scale
economic and social impacts, and environmental damage. For example, Cyclone Gonu was the strongest
tropical cyclone on record in the Arabian Sea, and tied for the strongest tropical cyclone on record in the
northern Indian Ocean and was the strongest named cyclone in this basin. On June 5 2007 it made landfall on
the eastern-most tip of Oman with winds of 150 km/h (90 mph). Gonu dropped heavy rainfall near the
eastern coastline, reaching up to 610 mm (24 inches), which caused flooding and heavy damage. The cyclone
caused about $4 billion in damage and nearly 50 deaths in Oman, where the cyclone was considered the
nation's worst natural disaster. Nowadays, we have access to data and techniques provided by remote sensing
and GIS that have proven their usefulness in disaster management plan. Remote Sensing can assists in
damage assessment monitoring, providing a quantitative base for relief operations. After that, it can be used
to map the new situation and update the database used for the reconstruction of an area. Disaster
management plan consists of two phases that takes place before disaster occurs, disaster prevention and
disaster preparedness, a three phases that happens after the occurrence of a disaster i.e. disaster relief,
rehabilitation and reconstruction. In the disaster rehabilitation phase GIS is used to organize the damage
information and the post-disaster census information, and in the evaluation of sites for reconstruction. In this
study, two IKONOS satellite images of Muscat, Oman have been utilized; one image before the cyclone and
one after. The two images have been geometrically corrected. Change detection has been applied to identify
and assess the damages. The results of this study emphasize the importance of using remote sensing and GIS
in damage assessment phase as part of effective Disaster Management Plan.
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