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Two-dimensional image of an axisymmetric water jet, obtained by the laser-induced fluorescence technique. A neodymium:yttrium-aluminum-garnet laser beam, shaped into a sheet of 250-micrometer thickness by using suitable lenses, was directed into a…

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from article Turbulent flow

Typical signals of ε′, a component of the turbulent energy dissipation, normalized by its mean value 〈ε′&x3009 x232A;. (a) Signal obtained in a laboratory turbulent boundary layer at a moderate Reynolds number (defined suitably). (b) Signal obtained…

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from article Nearshore processes

Longshore currents, generated when waves approach the beach at an angle. At Oceanside, California, the longshore current is flowing toward the observer. (Photo courtesy of Department of Engineering, University of California, Berkeley)

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from article Nearshore processes

Definition sketches for nearshore circulation cells. (a) Asymmetrical cell for breakers oblique to the shore. (b) Symmetrical cell for breakers parallel to the shore.

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from article Nearshore processes

Beach profile, showing characteristic features.

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from article Nearshore processes

Effect of headlands on the accretion of beach sand at Point Mugu, California. The point forms a natural obstruction that interrupts the longshore transport of sand, causing accretion and a wide beach to form (foreground). The regularly spaced…

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from article Nearshore processes

Sand delta at Rio de la Concepción on the arid coast of the Gulf of California. Such deltas are important sources of sand for beaches. (Courtesy of D. L. Inman)

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from article Chemistry