Comparative Study for Sediment Yield from Air Born and Space Born

Document Type : Original Article

Authors

1 Civil Engineering Department, Ph D Candidate M T C.

2 M. T. C., Egypt.

Abstract

Abstract Recently scientists acquire different Morphological data concerning large watersheds from air born as well as space born. The objective of this research is to compare the sediment that been yielded from Agora Watershed from the data acquired from different missions. The study area is located on coastal shoreline of Egypt about 48 km east of Matrouh city. Morphological studies with the aid of photo- interpretation were carried out to determine the boundary of the watersheds from aerial photographs of scale 1:40000. Lengths of main channel and tributaries were measured by electronic planimeter (planix-5000). Slopes for main channel and tributaries were determined from photographic map of scale 1:25000. Landsat image as one of space born mission with digital terrain model for the study area were used to determine land cover, watersheds boundaries and to measure the length and slopes of main channel and tributaries. Data acquired from morphological data , soil characteristics (geology, soil surface, particle size, soil erodibility factor, K) and rainfall for both air born and space born techniques were interested as an input data in WASHMO model in order to get water inflow and sediment discharge. Results were analyzed for each watershed and recommendations for previous work were stated.

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