Ismail M., M. M. Shoman and Y. K. El Ghonamey( 2012). IMPACT OF COASTAL EROSION ON SOME SOIL FEATURES OF ROSETTA AREA, EGYPT USING REMOTE SENSING AND GIS TECHNIQUES Minufiya J. Agric. Res. Vol.37 No. 2: 377-386 (2012)
Abstract: Since the construction of the Aswan High Dam in 1964, there has been concern that the Egyptian coastline along the Mediterranean Sea would suffer from increased erosion. The dam effectively stopped the supply of sediment carried by the River Nile to the Mediterranean and so left the coastline without a shore building capability. In this study two types of data were used; SPOT-2 satellite data acquired in 1991 and QuickBird satellite Data acquired in 2011. Through analysis of high resolution satellite images of the studied area in period from 1991 to 2011. The results showed in 1991 the SPOT-2 image was classified into 5 classes cultivated areas, urban areas, bare soil+Sand sheet areas, wetland areas, and Marine and Riverine parts. While in 2011 the high resolution QuickBird image was classified into 9 classes cultivated areas, urban areas, sand sheet, bare soil, marshes, fish farms, canals + roads, logged water, and Marine and Riverine parts. Some classes which presence in 1991 such as wetland class was converted in 2011 to fish farms class with an area of about 7.05 km2 and logged water class with an area of about 1.12 km2. Also the increase in sea water supply led to increase in the salt concentration and create marshes area of about 3.10 km2 in the north part of the studied area. Reshaping process of the north shoreline of the studied area could be results of wind and sea waves’ erosion especially after reduce the Nile sediment supplement. The obtained results showed that the eroded area from 1991 to 2011 was 4.32 km2 while the accreted area in the same period was 1.11 km2. The results also showed a change in the degree of salinity in the studied area from 1960 to 2011, where the studied area was classified into 3 classes according to the changes in the salinity degree to improved areas, degraded areas and not changed areas.
Keywords: (Satellite data, GIS, North coast, Rosetta, erosion)
