Results 11 to 20 of about 6,074 (256)
Roughness Analysis of Sea Surface From Visible Images by Texture [PDF]
IEEE Access, 2020 This paper presents a roughness analysis of sea surface from visible images by feature measurements of texture for the first time. The algorithms presented in this paper include six texture feature measurements of sea surface use gray level co-occurrence
Hailang Pan +5 more
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Sea Surface Roughness Observed by High Resolution Radar [PDF]
Remote Sensing, 2019 Changes in the sea surface roughness are usually associated with a change in the sea surface wind field [...]
Atsushi Fujimura +3 more
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Sea surface short-period roughness unsteadiness [PDF]
E3S Web of Conferences, 2023 The effect of spatial inhomogeneity of sea waves on the accuracy of determining the level of the sea surface is studied. Based on the data of direct wave measurements, the variability of statistical characteristics of sea waves on scales smaller than the
Shumeyko Irina, Burdyugov Vyacheslav
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On the Response of Polarimetric GNSS-Reflectometry to Sea Surface Roughness [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2021 Reflectometry of Global Navigation Satellite Systems (GNSS) signals from the ocean surface has provided a new source of observations to study the ocean–atmosphere interaction. We investigate the sensitivity and performance of GNSS-Reflectometry (GNSS-R) data to retrieve sea surface roughness (SSR) as an indicator of sea state.
Mostafa Hoseini +2 more
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Roughness Change Analysis of Sea Surface From Visible Images by Fractals
IEEE Access, 2020 This paper presents an analysis of sea surface roughness from visible images based on fractals features for the first time. We measure fractal dimensions of sea surface images by the methods of box counting, fractional Brownian motion, and area ...
Hailang Pan +5 more
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Reduced Sea-Surface Roughness Length at a Coastal Site
Atmosphere, 2021 Sea-surface roughness length is a key parameter for characterizing marine atmospheric boundary layer. Although aerodynamic roughness lengths for homogeneous land and open water surfaces have been examined extensively, the extension of relevant knowledge ...
Yuncheng He +5 more
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An alternative approach to sea surface aerodynamic roughness [PDF]
Journal of Geophysical Research, 2006 The dependence of sea surface roughness on the wave parameters was investigated using measurements from the Humidity Exchange over the Sea Main Experiment (HEXMAX). This site was 18 m of water depth and was 9 km offshore in the North Sea. We examined the relationships among wave height (Hs), friction velocity (u*) and wave age (cp/u* or cp/U10N) using ...
Zhiqiu Gao
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Mapping Arctic Sea-Ice Surface Roughness with Multi-Angle Imaging SpectroRadiometer
Remote Sensing, 2022 Sea-ice surface roughness (SIR) is a crucial parameter in climate and oceanographic studies, constraining momentum transfer between the atmosphere and ocean, providing preconditioning for summer-melt pond extent, and being related to ice age and ...
Thomas Johnson +3 more
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A Novel Sea Surface Roughness Parameterization Based on Wave State and Sea Foam
Journal of Marine Science and Engineering, 2021 A wave state related sea surface roughness parameterization scheme that takes into account the impact of sea foam is proposed in this study. Using eight observational datasets, the performances of two most widely used wave state related parameterizations
Difu Sun +4 more
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Passive Microwave Measurements of Sea Surface Roughness
IEEE Transactions on Geoscience Electronics, 1971 Passive microwave measurements of the sea surface were made from Argus Island tower at 1.41, 8.36, and 19.34 GHz over a range in wind speeds from calm to 15 m/s. These measurements show a definite frequency-dependent correlation between the microwave brightness temperature and wind speed.
exaly +2 more sources