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Acoustic Attenuation in Ocean Sediments Found in Shallow Water Regions

Karl Crawford Focke

出版	University of Texas at Austin, 1983
URL	http://books.google.com.hk/books?id=lMMQAQAAIAAJ&hl=&source=gbs_api

註釋

The acoustic attenuation in ocean sediments is a major loss mechanism for low frequency acoustic propagation in shallow water regions. Analysis of measured propagation in these regions has generally included estimates of the attenuation in the sediment, without consideration of the variations in attenuation as a function of depth. It will be shown that these variations can have a significant impact on the standard estimates. A new procedure is then developed which provides estimates of the attenuation as a function of depth. This procedure is used to obtain attenuation depth profiles in three shallow water regions. These estimated profiles present characteristics observed in laboratory and in situ measurements