Monitoring the Growth and Development of River Islands of the Tigris River between Zabin

Abstract

The river islands are among the most prominent geomorphic features in the course of the Tigris River within the river section under study, as the area has been covered for 36 years from 1984 to 2019 and the study area is strictly limited between the mouth of the upper zab and the lower zab. The most important natural factors that contributed and still contribute to the present day to facilitate the construction process of the river islands were illustrated by clarifying the effect of geological factors and the slope of the stream and the effect of curves, in addition to clarifying the role of water discharges as well as clarifying the role of the riverine load important and essential in the direct impact on the growth of islands In addition to the human factor, by identifying the most effective human investments in the formation or creation of conditions appropriate for the formation of river islands represented by gravel and sand quarries. In order to monitor the geomorphic development taking place in the river islands in the river course between the two zabines during the first two periods of time, they were chosen before the establishment of the Mosul Dam in 1984 from the sensor type (TM) and the second visual for the year 2019 of the type sensor (Landsat8) to highlight the growth and development of the river islands by comparing the islands Existing in the visuals for the different periods, and then to give a clear picture of the nature of the operations that it witnessed and the resulting development in the numbers, sizes and shapes of the river islands during the study years.