نتایج جستجو برای: hun river alluvial proluvial fan

تعداد نتایج: 98386  

Journal: :مطالعات باستان شناسی 0
مهران مقصودی دانشیار گروه جغرافیای طبیعی، دانشگاه تهران سید محمد زمان زاده استادیار گروه جغرافیای طبیعی، دانشگاه تهران حسن فاضلی نشلی دانشیار گروه باستان شناسی، دانشگاه تهران روح الله یوسفی زُشک استادیار گروه باستان شناسی، دانشگاه آزاد ورامین سمیرا چزغه دانشجوی دکتری ژئومورفولوژی، دانشگاه شهید بهشتی حجت الله احمدپور دانش آموخته کارشناسی ارشد باستان شناسی، دانشگاه آزاد اسلامی واحد تهران مرکز

water resources throughout human history have always been an important factor in attracting human settlement. the main purpose of this paper was to investigate what is the role of shadchay river in the location of two prehistoric settlements that are called tepe meymon abad. in this research by field studies and also to investigate the characteristics of the sediments, samples were taken from t...

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In this study the advantages and importance of a numerical model to predict and monitor the processes governing hydraulic changes alluvial fan river is discussed. For this reason and because of the importance of flow velocity and shear stresses resulting from the erosion of the river, A two-dimensional numerical model to simulate the CCHE2D river changes ranging from Roodan River is used. In th...

Journal: :Review of the Bulgarian Geological Society 2021

2011
John J. Armitage Nicholas H. Warner Kate Goddard Sanjeev Gupta

[1] Dozens of large, low‐gradient alluvial fans are present within impact crater basins on the cratered highlands of Mars. The timescales and climate conditions that were required to generate such fans are unknown, but testable through our understanding of terrestrial hill slope erosion in the presence of precipitation. Previous estimates of fan formation time vary from years to millions of yea...

2017
Luca C. Malatesta Michael P. Lamb

Waterfalls commonly exist near bounding faults of mountain ranges, where erosional bedrock catchments transition to depositional alluvial fans. We hypothesize that aggradation on alluvial fans can bury active faults, and that the faults accumulate slip in the subsurface to produce a bedrock scarp. Following entrenchment of the alluvial fan, the scarp can be exposed as a waterfall. To explore th...

2008
M. Cavalli L. Marchi

Alluvial fans of alpine torrents are both natural deposition areas for sediment discharged by floods and debris flows, and preferred sites for agriculture and settlements. Hazard assessment on alluvial fans depends on proper identification of flow processes and their potential intensity. This study used LiDAR data to examine the morphology of the alluvial fan of a small alpine stream (Moscardo ...

Journal: : 2023

This article reviews information from published papers and studies by the authors about placer diamond deposits. Original data were obtained in result of field laboratory-analytical work carried out various countries Africa South America. The main types deposits – fluvial, fluvioglacial, eolian, man-made have been considered characterized. attention is given to fluvial continental placers, whic...

2010
Nicholas Swanson-Hysell David L. Barbeau

Alluvial-fan strata contain valuable proxy data for kinematic, climatic and sediment-flux phenomena associated with high-relief source regions. Proper application of this data is dependent upon acquisition of accurate high-resolution chronostratigraphic data, best achieved through magnetostratigraphy. Collection of magnetostratigraphic and other proxy data from composite alluvial-fan sections a...

Journal: :Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 2011

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