Long-term varations in beach width of Alexandria Governorate have ben analyzed using two sets of aerial photos taken in 1955 and 1983. The analysis reveals that a major part of most beaches has been subjecded to coast...Long-term varations in beach width of Alexandria Governorate have ben analyzed using two sets of aerial photos taken in 1955 and 1983. The analysis reveals that a major part of most beaches has been subjecded to coastal erosion except for only beaches. The esthated long-term rate of erosion is approximately 0. 20 m/a.El Maamoura, located east of Alexandria is selected to evaluate seasonal vacations. Sand volume lOsses are found to be 450 m3/ (m. a) for the entire beach length (1. 2 km). The annual sand transport by wind is estimated as about 37.7 m3. Subtracting this amount of sand from the net sand loss 450 m3/ (cm. a) yields 412.3 m3/(cm. a) of eroded sand caused by the action of currents and waves.展开更多
文摘Long-term varations in beach width of Alexandria Governorate have ben analyzed using two sets of aerial photos taken in 1955 and 1983. The analysis reveals that a major part of most beaches has been subjecded to coastal erosion except for only beaches. The esthated long-term rate of erosion is approximately 0. 20 m/a.El Maamoura, located east of Alexandria is selected to evaluate seasonal vacations. Sand volume lOsses are found to be 450 m3/ (m. a) for the entire beach length (1. 2 km). The annual sand transport by wind is estimated as about 37.7 m3. Subtracting this amount of sand from the net sand loss 450 m3/ (cm. a) yields 412.3 m3/(cm. a) of eroded sand caused by the action of currents and waves.
