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Distribution of Seagrass (Zostera marina) Beds and High Frequency Backscattering Characteristics by Photosynthesis  

Yoon Kwan-Seob (한양대학교 지구해양과학과 해양음향연구실)
La Hyoung Sul (한양대학교 지구해양과학과 해양음향연구실)
Na Jungyul (한양대학교 지구해양과학과 해양음향연구실)
Lee Jae-Hyuk (한양대학교 지구해양과학과 해양음향연구실)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.8, 2004 , pp. 562-569 More about this Journal
Abstract
An experiment for observation of the distribution of the seagrass (zostera marina) beds and characteristics of high-frequency backscattering by the photosynthesis was conducted off the coast. Acoustic data were taken as a function of the grazing angles and the relative azimuth angles on the seagrass beds of which bottom type was sandy-mud. The transmitted source signal was a 120 kHz CW waveform. Mapping of the seagrass beds distribution was drawn up using the seagrass backscattering strength with azimuth and grazing angles. The result of the comparison backscattering strength distribution of the seagrass beds was shown to be the similar to the photograph of real seagrass beds. The seagrass backscattering strength was also compared between day and night to verify the effects of the acoustical scattering by the bubbles of Photosynthetic oxygen formed on the seagrass. In these results. it is clear that observation of the seagrass beds between day and night showed the different characteristics because the bubbles of Photosynthetic oxygen affect the acoustical scattering.
Keywords
Seagrass backscattering; Photosynthesis; Bubble attenuation; Time dispersion;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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