Low-frequency Fluctuations of Suspended Sand and Wave Groups in the Surf Zoneby R. D. Kos'yan, Russian Acad of Sciences, Krasnodar, Russia,
S. Yu. Kuznetsov, Russian Acad of Sciences, Krasnodar, Russia,
N. V. Pykhov, Russian Acad of Sciences, Krasnodar, Russia,
Abstract: Field observations of the sand suspension near the bottom in surf zone are presented and discussed. Calculated spectra of suspended sand concentration and wave envelope was found to be similar and show that sand was more intensively suspended at the wave groups frequencies (&asyum; 0.013 Hz for our conditions) and at the frequencies lower than 0.004 Hz. Peculiarities of fluctuations of suspended sand median diameter are discussed.
Subject Headings: Sand (hydraulic) | Sand waves | Water waves | Wave spectrum | Frequency response | Soil analysis | Surf zones
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