Oceanography

Breaking Ocean Waves: Geometry, Structure and Remote Sensing - download pdf or read online

By Eugene A. Sharkov

This e-book represents the main finished description of the actual findings of an research into the spatio-temporal features of the gravity of breaking waves and the froth job in open sea by means of tools and tools of optical and microwave distant sensing.

The examine of actual and electrodynamics' houses of the gravity wave breaking procedures and the froth spatio-temporal task is a crucial part of satellite tv for pc oceanography, ocean engineering, air-sea interplay and ocean distant sensing. specifically, the contribution of froth formations of assorted forms to the suggest and the spatio-temporal adaptations of radio emission, back-scattering, IR and optical parameters of the disturbed sea floor is very major. The statistical features of wave breaking and attendant foam forming are vitally important to ocean wave dynamics. The research and size of spatio-temporal features of wave breaking and sea foam formations are of basic significance in ocean distant sensing.

Much emphasis is put on the actual features of breaking techniques essential to degree the chances and barriers of distant sensing tools in particular statement situations of an oceanic floor. quite a few useful purposes and illustrations are supplied from air-borne, ship-borne and laboratory updated experiments.

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Additional info for Breaking Ocean Waves: Geometry, Structure and Remote Sensing (Springer Praxis Books / Geophysical Sciences)

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13. Aerial photography frames with a random ®eld of breaking centers over a 260  280-m spatial window: (a) run I with fetch X ˆ 24 km; (b) run II with fetch X ˆ 57 km; (c) run III with fetch X ˆ 95 km; (d) run IV with fetch X ˆ 156 km. The leading center is circled. 2 Markov property of the breaking ®eld To check the hypothesis that the breaking ®eld belongs to processes where an aftere€ect is absent, calculations were carried out and then the histograms of squares of distances from an arbitrary, randomly chosen ``driving'' center (the foam structure) to its nearest neighbor (the ``driven'' center) were constructed in a spatial window of a frame.

By ``ranked set volume'' here we mean the size of distances between the centers used for constructing the histograms. 14 represent a statistical analog of a ranked probability density of ``the waiting area'' (``the space for life'')Ðthat is, the area around the selected center that does not contain any center from the set of centers. 14 allows us to easily conclude that the probability density of the ``waiting area'' p…S† has a prominent exponential character (the semi-logarithmic scale of a plot) for all four surveying series.

X is fetch ( km);  10 is nondimensional fetch. I±IV are areas for the aerial photography. 1. 1. 2b). Sec. 2 Technique and conditions for performing ®eld experiments 13 According to the primary goal of the experiment, each track was ¯own over the oil installation by the weather station, where contact measurements of sea waves, as well as measurements of the air- and thermodynamic characteristics of a near-surface layer of the atmosphere and sea surface were carried out. 5 m deep (a sandbank called ``Oil Rocks''), on which large gravity sea waves, formed in the water area of the Caspian Sea southward of the shallows, have been almost fully destroyed.

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