Investigation of sea roughness with complex of optical devices

Титов, В. И.; Bakhanova, V. V.; Kemarskaja, O. N.; Лучинин, А. Г.; Troizkaja, J. I.; Zuikova, E.M.

doi:10.1117/12.830279

Cited by 4 publications

(5 citation statements)

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“…In particular, optical panoramas make it possible to determine the parameters of the long waves on the sea surface 3,4 . During of experiment the surface waves with the length 6 -12 m , predominantly western direction were recorded.…”

Section: Meausurement Equipmentmentioning

confidence: 99%

Study on wind wave variability by inhomogeneous currents in the neighborhood underwater hill

Bakhanov¹,

Bogatov²,

Ermoshkin³

et al. 2016

SPIE Proceedings

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A experiments were performed in the shelf zone of the Black Sea in 2015 to study variability of the current fields and other characteristics of sea bulk, wind waves, and the near-surface atmospheric layer. Region with the secluded underwater hill streamlined with currents was selected. Measurements were carried out from the onboard of vessels on move and in drift by optical, radar, acoustic equipment, and STD probe.The complex different structure of waters, which was formed under the influence of shelf waters and water of the open sea interaction, was observed during the experiment. The analysis of measurements in the water column showed that that the flow around underwater elevation forms the hydrophysical disturbances of marine environment. Maximum flow observed above the slopes of underwater elevation and reach 50 cm/s. Wind speed varied from 0 to 10 m/s. On radar panoramas in the region of underwater elevation is observed the appearance of the wave structure, different from the background wind waves. This anomaly on the sea surface is connected with non-uniform current in the neighborhood underwater elevation.

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Section: Meausurement Equipmentmentioning

confidence: 99%

Study on wind wave variability by inhomogeneous currents in the neighborhood underwater hill

Bakhanov¹,

Bogatov²,

Ermoshkin³

et al. 2016

SPIE Proceedings

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“…in order to record two optical RTI images for various directions of observation. These two images enable one to receive complete information about kinematics characteristic of various manifestations on the sea surface, including sea surface waves regardless of its dispersion relation [10] .…”

Section: Manifestation Of Near Surface Wind Flows On Sea Surfacementioning

confidence: 99%

“…This images permit to visualize and investigate the near surface wind fields and wind blows owing to RTI images ability to divide sea surface objects to its velocity. This work is continuation of our investigation and concerns to retrieval of wind direction and wind speed from optical RTI images with various directions of observation [10], [11] .…”

Section: Introductionmentioning

confidence: 99%

Investigation of near surface wind by optical images of wind-roughened water surface

Титов¹,

Bakhanov²,

Лучинин³

et al. 2014

Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2014

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The method of retrieval of wind speed from sea surface image under diffuse sky illumination is developed. The method consists of two stages: firstly the rms slope is determined by fitting modeled radiance with sought rms slope to measured sea surface radiance and secondly wind speed is determined using the Cox and Munk relation between mean square slope and wind speed. An analytical model of sea surface radiance for visible light is developed taking into account shadowing of surface waves for grazing view geometry. The method was applied to investigation of the structure of near surface wind fields in сatabatic wind flows for ranges from hundreds meters to ten kilometers.

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“…This 3D analyzer was used in natural measurements of space -time spectra of short sea surface waves. The space -time optical images [7][8][9] of capillary waves using artificial diffuse illumination of water surface like sky illumination was derived in water tank with spatial resolution 0.3 mm and frame frequency 300 Hz. The software for processing of capillary wave's images was developed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of surface roughness with optical methods

Титов¹,

Zuikova²,

Лучинин³

et al. 2010

SPIE Proceedings

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The paper is devoted to the development of optical methods for investigations of surface waves. The no coherent optical multichannel spectrum analyzer for space -time (3D) spectral measurements of sea surface waves in real time is developed. The model of space -time (3D) spectra of sea surface short scale wave's optical image taking into account elevation of the long energy surface waves and comparative measurements of optical image spectra and Doppler spectra of X-band scatterometer are presented. A method for retrieval of absolute value of long wave elevations from optical image spectra is proposed. The high-speed optical system based on linear array of CCD photodiodes for registration space -time images of capillary waves is created. The data on free and bounded capillary waves derived with this system in laboratory tank with artificial diffuse illumination is presented.

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Investigation of sea roughness with complex of optical devices

Cited by 4 publications

References 0 publications

Study on wind wave variability by inhomogeneous currents in the neighborhood underwater hill

Study on wind wave variability by inhomogeneous currents in the neighborhood underwater hill

Investigation of near surface wind by optical images of wind-roughened water surface

Investigation of surface roughness with optical methods

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