Experimental and numerical studies of sound propagation over a submarine canyon northeast of Taiwan
Duda, Timothy F.
Gawarkiewicz, Glen G.
Newhall, Arthur E.
Lynch, James F.
Abbot, Philip A.
MetadataShow full item record
KeywordAcoustics; Noise; Numerical models; Solid modeling; Sonar equipment; Underwater vehicles; Vehicles
A study of sound propagation over a submarine canyon northeast of Taiwan was made using mobile acoustic sources during a joint ocean acoustic and physical oceanographic experiment in 2009. The acoustic signal levels (equivalently, transmission losses) are reported here, and numerical models of 3-D sound propagation are employed to explain the underlying physics. The data show a significant decrease in sound intensity as the source crossed over the canyon, and the numerical model provides a physical insight into this effect. In addition, the model also suggests that reflection from the canyon seabed causes 3-D sound focusing when the direction of propagation is along the canyon axis, which remains to be validated in a future experiment. Environmental uncertainties of water sound speed, bottom geoacoustic properties, and bathymetry are addressed, and the implications for sound propagation prediction in a complex submarine canyon environment are also discussed.
Author Posting. © IEEE, 2015. This article is posted here by permission of IEEE for personal use, not for redistribution. The definitive version was published in IEEE Journal of Ocean Engineering 40 (2015): 237-249, doi:10.1109/JOE.2013.2294291.
Suggested CitationArticle: Lin, Ying-Tsong, Duda, Timothy F., Emerson, Chris, Gawarkiewicz, Glen G., Newhall, Arthur E., Calder, Brian, Lynch, James F., Abbot, Philip A., Yang, Yiing-Jang, Jan, Sen, "Experimental and numerical studies of sound propagation over a submarine canyon northeast of Taiwan", IEEE Journal of Ocean Engineering 40 (2015): 237-249, DOI:10.1109/JOE.2013.2294291, https://hdl.handle.net/1912/7177
Showing items related by title, author, creator and subject.
MEMS IMU navigation with model based dead-reckoning and one-way-travel-time acoustic range measurements for autonomous underwater vehicles Kepper, James (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2017-09)Recent advances in acoustic navigation methodologies are enabling the way for AUVs to extend their submerged mission time and maintain a bounded XY position error. Additionally, advances in inertial sensor technology ...
Raanan, Ben-Yair; Bellingham, James G.; Zhang, Yanwu; Kemp, Mathieu; Kieft, Brian; Singh, Hanumant; Girdhar, Yogesh (John Wiley & Sons, 2017-12-26)For robots to succeed in complex missions, they must be reliable in the face of subsystem failures and environmental challenges. In this paper, we focus on autonomous underwater vehicle (AUV) autonomy as it pertains to ...
Verification of a six-degree of freedom simulation model for the REMUS autonomous underwater vehicle Prestero, Timothy (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-09)Improving the performance of modular, low-cost autonomous underwater vehicles (AUVs) in such applications as long-range oceanographic survey, autonomous docking, and shallow-water mine countermeasures requires improving ...