بررسي وضعيت ژيومرفولوژيكي ييچان رود و نقش آن در فرسايش بستر و كناره هاي رودخانه ميناب

Geomorphological Investigation of Meander and its Role in the Floor and Sides Erosion of the Minab River

RIVER resembles an uncovered canal having particularities cross section area length profile and slop that is due to such as metamorphoses overtime, these changes depends on rate of flow, bed rivers materials, sediment discharge, and some other variables that are under shadow the river, THE bed of most conduits and rivers despite of their differences in term of size and geometrical and hydraulic specifications, they seldom appear as direct streams or said to be kind of direct conduits. But along way they donʹt have regular twists but symmetric conditions possibly viewed referred to as meander. Regarding to the field studies on MINAB rivers in the view of geomorphological and erosion it was know that sediment discharge, quantity and its type, the bed materials and different models for the plan of this river can indicate many dynamic and morphological particularities. THE geometry of the river, the interval of Minab Bridge to "Doo Doo" village is a big Meander, to which most of activities in Hormozgan province and even Persian Gulf neighbor countries depend on sand and gravel extract from this meander. This river from under the bridge has curves to the right. This arch within 300-400m downstream Minabʹs bridge stretches to TOMBANOO then embraces small meander on the left border of " Doo Doo" village. AS the river is considered as a system, dynamic environment, so it is attempted in the paper that meander analyses in the river of minab as one of erosive phenomena affects this alluvial system.