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Measurement of the variance of water surface slopes by a radar: Verification of algorithms
Radiophysics and Quantum Electronics, 2008A full-scale experiment is carried out to study backscattering of a microwave radar signal by a rough water surface during flight over the Gorky water storage. A centimeter-wavelength Doppler radar with a knife-beam antenna oriented vertically downward was installed on the helicopter.
V. Yu. Karaev +4 more
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Satellite-Based Water Surface Slope in Small Mountain River
Satellite altimetry has emerged as a key alternative for inland water level measurement in addition to ground observations. Water surface slope (WSS) is one of the basic parameters of river morphology for discharge calculation. Estimation of WSS can also avoid systematic bias in satellite water levels relative to gauged data.Haoyang Lyu, Fuqiang Tian
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Collocated and simultaneous measurement of surface slope and amplitude of water waves
Review of Scientific Instruments, 1993We demonstrate by experiment that, in addition to the local surface slope, local surface elevation can also be directly measured using the refracted light beam traversing an air-water interface, thus showing the feasibility of a new surface slope and wave height amplitude gauge for use in studying water waves.
J. D. Barter, K. L. Beach, P. H. Y. Lee
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Water-surfaces profiles of gradually varied flow in prismatic channels with variable slope
Journal of Interdisciplinary Mathematics, 2007Abstract The change from subcritical to supercritical linear flow in prismatic channels with constant slope is gradual and spontaneous only in the presence of a critical slope. Yet, generally, such changes occur when channel’s slope varies. When this happens, the gradual change from subcritical to supercritical linear flow is spontaneous while the ...
RUSSO SPENA, Aniello +2 more
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Estimating Water Surface Slope of Rivers Using ICESat-2 Observations
2022<p>The water surface slope of rivers is an essential variable for estimating river discharge. It is also helpful as a correction applied to range measurements of satellite altimetry missions to derive water level time series at a virtual station.
Daniel Scherer +2 more
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Direct Analytical Solution of Turbulent Surface Water Flow on a Slope
Journal of Hydrologic Engineering, 2013AbstractA direct analytical approach is proposed to study the turbulent surface water flow on a slope. Both unplanted ground and grassed ground are investigated by dividing the flow field into two layers—homogenous water layer/vegetation layer and permeable soil layer, respectively.
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A method of determining water surface slopes in ocean dynamics problems
Russian Journal of Numerical Analysis and Mathematical Modelling, 1994A method is suggested that can be used to directly calculate derivatives of the sea level surface in models of hydrothermodynamics of a deep basin. The method does not involve the conventional approximation of these derivatives and provides high calculation accuracy for barotropic components of velocity.
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Entrainment and mixing of shelf/slope waters in the near‐surface Gulf Stream
Journal of Geophysical Research: Oceans, 1990An interdisciplinary study of the entrainment of shelf and slope waters in the Gulf Stream front was undertaken in October 1985 northeast of Cape Hatteras. Fifteen hydrographic transects of the Gulf Stream front and of the shelf water intrusion known as Ford water were completed in 2 1/2 days with a towed undulating profiler, the SeaSoar, equipped with
J. L. Lillibridge +5 more
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Superficial treatment of slope surface to reduce rain water infiltration
2012Rainwater infiltration is the major cause of failure in unsaturated slopes. Analyses carried out to model groundwater flow in a partially saturated pyroclastic slope (Pirone, 2009) highlight the influence on the failure mechanism of the hydraulic condition at the upper boundary.
PIRONE, MARIANNA, URCIUOLI, GIANFRANCO
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