river of the most important factors in the cycle of erosion and geomorphologic process and present their studies on the wide are. in this research , the purpose of understanding factors that influence changes geomorphologic middle part of the river bed and atrak river review these changes has been the domain. this area is located between the villages of ghazan ghaye to chat in golestan province...

in present study effects of riparian vegetation on morphometric and morphological changes have been investigated in a part of talar river during 58 years. so land use maps produced for 1955 and 2013 by aerial photos. results show during study time riparian vegetation changed extremely and approximately 96% of riparian vegetation removed during 58 years. in additionally, results showed during st...

Clastic sediments in the Bengal Fan contain a Neogene history of erosion and weathering of the Himalaya. We present data on clay mineralogy, major element, stable and radiogenic isotope abundances from Lower Miocene-Pleistocene sediments from ODP Leg 116. Nd and Sr isotope data show that the Himalayan provenance for the eroded material has varied little since > 17 Ma. However, from 7 to 1 Ma sm...

Estimation of sediment transport load due to erosion in river basins is one of the issues which is indispensable for many projects related to water resources, soil and damps construction. With regards to the phenomenon of erosion and transmission Sedimentation in rivers has always led to deformation in the seaboard and sedimentation, so the management and planning in bank of rivers is important...

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The Study of river water quality interation with lakes and dam reservoirs is important from anexploitation point of view. When river water with different densities enters a lake or dam reservoir,underflow density current phenomenon occurs. Because of the density, so understandingdifferent arrays of this phenomenon Seems necessary for checking erosion and sedimentationprocesses and their managem...

karkhe watershed (kw) with more than 5 million hectares recently encountered many problems in the natural, social and man-made habitats. unsuitable use of land, soil erosion and lack of rainfall are the most destructive factors in this watershed affecting the whole region fundamentally. as expected, these problems have caused a considerable fall in biodiversity in fauna and flora, a decrease in...

Abstract Rivers transfer terrestrial organic carbon (OC) from mountains to ocean basins, playing a key role in the global cycle. During fluvial transit, OC may be oxidized and emitted atmosphere as CO 2 or preserved transported downstream depositional sinks. The balance between oxidation preservation determines amount of particulate (POC) that can buried long term, but factors regulating this a...