We analyzed the experimental data from two survey lines in an experiment conducted in the South China Sea. The bottom of one survey line is flat, and that of the other line has a large slope. Comparison indicated significant difference in the convergence zones between the two survey lines. We simulated the experimental phenomenon by using the Bellhop model. Simulation results are consistent with the experimental findings and explained the mechanism underlying the occurrence of the phenomenon. The following conclusions were derived. (1) A strong signal reflection zone, similar to the convergence zone, exists in the near field. (2) The convergence zones in the slope appear earlier and are higher in number. (3) The complexity of the slope (i.e., large fluctuation) easily affects the transmission of the converging sound lines, resulting in significant attenuation of the acoustic signal. (4) When the sound source is deep, the convergence zone widens and the first convergence zone disappears in the signal reflection zone in the case of a flat seabed; Convergence zone in the slope directly disappears.
Applied Acoustics – Elsevier
Published: Oct 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera