The
objective of this study is to find empirical equation for the determination of
the estuaries displacements of Gilan Province’s Rivers, Iran. For this purpose,
first, the displacement of estuary of each river was determined using the
Geographical Information Systems (GIS). Remote sensing data and topographical
maps of four different years were used in this study and the displacement of
estuary of the rivers were determined by providing the estuaries map in those
periods. On the other hand, the sediment transport rate of the rivers was
calculated in different periods using observed sediment data. Correlation
between the sediment concentration indices and displacement of the estuaries
indices in Gilan Province’s Rivers were studied. Results show that the ratio of
maximum sediment concentration to average sediment concentration of each river has high correlation with the transversal
average displacement of the estuaries in each period. Examination of results
show that variation of transversal displacement of rivers’ estuaries with
sediment index can be investigated in three intervals. In the first interval,
sediment index was 0-50, in the second interval 50-100 and in the third
interval 100-150. The average transversal displacement of rivers estuaries in
three intervals are about 15 m, 87 m, 286 m per year, respectively. This
research shows that erosion and sedimentation management of watersheds, debris
flood control and limiting the up-stream dams’ flushing play crucial role in
estabilization of the morphology of Gilan’s estuaries.
Banihabib M, Aarabi M, Arabi A. An Emperical Equation for the determination of the Displacement of the Gilan Estuaries. jwmseir 2014; 8 (25) :67-70 URL: http://jwmsei.ir/article-1-400-en.html
به اطلاع کلیه نویسندگان ، محققین و داوران محترم می رساند:با عنایت به تصمیم هیئت تحریریه مجله علمی پژوهشی علوم و مهندسی آبخیزداری فرمت تهیه مقاله به شکل پیوست در بخش راهنمای نویسندگان تغییر کرده است. در این راستا، از تاریخ ۱۴۰۳/۰۱/۲۱ کلیه مقالات ارسالی فقط در صورتی که طبق راهنمای نگارش جدید تنظیم شده باشد مورد بررسی قرار خواهد گرفت.