The behavior of corona discharge was investigated in wire–cylinder electrodes under the effect a crossed magnetic field. Townsend’s formula used commonly with modified empirical to evaluate different parameters positive and negative discharge. By using least-squares fitting, dimensional constants A, K, exponent n displayed significant dependence on applied An improvement pre-breakdown has been ...

Introduction: A stereo pair of HiRISE images of a pole-facing crater slope at 38S, 218E shows many fresh looking gullies. After measuring slopes using the stereo viewing geometry, we estimate the expected fluvial discharge rates using theory from Kleinhans [1] and Ikeda [2]. We also develop a numerical model of sediment transport based on theory presented in Kleinhans [1] to determine the time ...

Analysis of 41 ERS 1 synthetic aperture radar images and simultaneous ground measurements of discharge for three large braided rivers indicates that the area of active flow on braided river floodplains is primarily a function of discharge. A power law correlation is found between satellite-derived effective width We and discharge Q, where We is the water surface area within a braided reach divi...

regional analysis is one of the important methods for estimating the low flow in ungagged regions. investigation of the relations between effective factors of hydrological drought is the most important strategy to contrast and reduction of drought losses. in this study to analyze of low flow, the daily discharge data from 20 gauging stations with 25 years period (1988-2012) in the kashafroud ba...

the response of karoun basin in lumped and semi-distributed simulation were compared. also, the flood intensity of the sub-basins and the effects of physical parameters on flood hydrograph have been investigated. results demonstrated that there was no significant difference between the characteristics of flood hydrograph in lumped and semi-distributed simulation. also, results showed that the f...

Abstract In this study, a method for estimating the exponent “ n ” values of catchment-area equations four sub-basins within poorly gauged Benin-Owena River Basin Development Authority (BORBDA) in Nigeria is presented to enable estimation flows at ungauged sites basin and determination small hydropower (SHP) potential different locations each sub-basin entire basin. Optimal prediction streamflo...

[1] The proposed Surface Water and Ocean Topography (SWOT) mission would provide measurements of water surface elevation (WSE) for characterization of storage change and discharge. River channel bathymetry is a significant source of uncertainty in estimating discharge from WSE measurements, however. In this paper, we demonstrate an ensemble-based data assimilation (DA) methodology for estimatin...

The characteristics of submerged flow below vertical gate with sill upstream of horizontal diverging channel reach are analyzed based on experimental investigation. The experimental program is conducted in a laboratory flume with 10 cm wide, 31 cm deep and 3.0 m long. A diverging channel reach with fixed length and constant divergence angle is used. Polygonal sills with constant height, constan...