نتایج جستجو برای: channel slope

تعداد نتایج: 274735  

2007
DAVID R. MONTGOMERY

An analysis of channel head locations provides insight into controls on drainage density, the response of landscapes to climatic change, and the delineation of source areas for channel network simulations. Channel heads and colluvial deposits were mapped in a roughly 2 km 2 area near San Francisco, California, and, although channel heads are located within colluvial deposits in hollows, many su...

Afsaneh Eliassi, Maedeh Ghasemi, Naser Khodaei, Reza Saghiri, Sajjad Salari,

Background: Defects in endoplasmic reticulum homeostasis are common occurrences in different diseases, such as diabetes, in which the function of endoplasmic reticulum is disrupted. It is now well established that ion channels of endoplasmic reticulum membrane have a critical role in endoplasmic reticulum luminal homeostasis. Our previous studies showed the presence of an ATP-sensitive cationic...

Journal: :تحقیقات آب و خاک ایران 0
کاوه بیجاد صلاح کوچک زاده سیدعلی ایوب زاده

secondary flow investigation could be regarded as an important issue in open channel flow, in spite of its lower quantity compared to the base flow in the water course. it should be given special consideration because of the influence on some hydraulic factors in open channel, specifically in compound channels. in compound channels' due to the difference in the flow velocity of the main ch...

ژورنال: علوم آب و خاک 2022

In this research, soft computational models including multiple adaptive spline regression model (MARS) and data group classification model (GMDH) were used to estimate the geometric dimensions of stable alluvial channels including channel surface width (w), flow depth (h), and longitudinal slope (S) and the results of the developed models were compared with the multilayer neural network (MLP) m...

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Gully erosion is one of the most significant erosion types. This type of erosion is one of the most important sources of sediment in different regions of the world. Gullies often have different dimensions and complex characteristics and these characteristics may affect the distribution of vegetation. Topographic characteristics of gullies provide complex ecosystem for vegetation establishment. ...

Journal: :Frontiers in Marine Science 2022

Creep is an important factor of muddy submarine channel slope instability. In this study, a sub-bottom profiler was used to monitor the continuous internal change in laboratory better understand creep characteristics and mechanism The process analyzed according changes sound intensity. results indicate notable during instability process. Changes intensity time series decrease with increasing de...

Journal: :Particles 2021

The LHC data on the elastic scattering indicate that forward slope increase is not consistent with contributions of simple Regge poles only linear trajectories. dynamics might be associated unitarization in direct channel reaction. We discuss problems model and provide a respective illustration direct-channel option.

2001
Erkan Istanbulluoglu David G. Tarboton Robert T. Pack Charles Luce

[1] The channel head represents an important transition point from hillslope to fluvial processes. There is a nonlinear threshold transition across the channel head with sediment transport much larger in channels than on hillslopes. Deterministic specific catchment area, a, thresholds for channel initiation, sometimes dependent on slope, S, in the form of aS C, have been suggested. In this pape...

2008
Ozgur KISI M. Emin EMIROGLU Ahmet BAYLAR

A chute is characterized by a steep bed slope associated with torrential flow. This chute flow may be either smooth or stepped. The flow conditions in stepped channels are classified as nappe flow, transition flow and skimming flow. In this paper, hydraulic characteristics of flow regimes on the stepped channels are presented systematically under a wide range of discharge, channel slope and ste...

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