Document Type : Original Research Paper
Authors
1 Geological Survey of Iran, Marine Geology Management,Tehran, Iran
2 Faculty of Geography, University of Tehran, Tehran, Iran.
Abstract
The Gunu storm, due to its severe intensity, caused substantial damages to the coasts of Sistan and Baluchestan and Hormozgan provinces. Tropical storms develop in the form of enormous hurricanes which suck the surrounding air towards them. We feel such rapid movement of air as strong winds; In satellite images, it is seen as the movement of clouds (water vapor) towards the core or the eye of the storm. With a velocity of 150 km/h and rain reaching 160 mm, the storm had made considerable gemorphologic changes in the coast of Oman Gulf as well as damages. Such geomorphologic changes were studied using ETM, TM and LISS III satellite data and were compared before and after the Guno storm. Also the early results taken from satellite images were coordinated with field study after the storm. These inquiries show that acute changes have been made in the opening of important estuaries such as Shur, Sargan, Kahir, Bir and Bandini. Also change stream course, due to migration channel on river meander and area of flooded area on coastal plain was determined. Cooperation of satellite data shows, discharge of sediment to the bays such as Pozm, Chabahar that it can be a serious problem for navigation and coastal structures in this area.
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