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- W924809318 abstract "In order to examine the propagation loss associated with water depth and bottom sediment type, an acoustic experiment was conducted in the Southeast Sea of Korea. A sound source was towed along the pre-defined tracks in about 5kts and the signal was simultaneously received at three bottom-moored hydrophones. The propagation loss of sound wave traveling along the isodepth was compared with that crossing the isodepth. The former case shows, in general, less loss than the latter. This trend is stronger as the distance between a source and a receiver increases. When sound wave propagates across the isodepth, we also find that the propagation loss is influenced by the upsloping and downslopoing conditions of wave propagtion. In general, the propagation loss under downsloping condition is smaller than that of upsloping condition, and the differences are as large as 10dB in some cases. However, little difference are found in the propagation loss depending on the bottom types : gravelly sand and sand-silt-clay. Meanwhile, the optimum propagation frequencies are found within range of 130-255Hz." @default.
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- W924809318 date "1994-01-01" @default.
- W924809318 modified "2023-09-27" @default.
- W924809318 title "Propagation Loss Measurement of Underwater Sound Wave using Narrow Band Acoustic Signal" @default.
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