title: Focused sound from three-dimensional sound propagation effects over a submarine canyon.
abstract: Ship noise data reveal an intensification of the near-surface sound field over a submarine canyon. Numerical modeling of sound propagation is used to study the effect. The noise data were collected during an ocean acoustic and physical oceanography experiment northeast of Taiwan in 2009. In situ measurements of water sound-speed profiles and a database of high-resolution bathymetry are used in the modeling study. The model results suggest that the intensification is caused by three-dimensional sound focusing by the concave canyon seafloor. Uncertainties in the model results from unsampled aspects of the environment are discussed.
authors.affiliation: Department of Engineering Science and Ocean Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 10617 Taiwan. f91525002@ntu.edu.tw
authors.forename: Linus Y S
authors.initials: LY
authors.lastname: Chiu
authors.forename: Ying-Tsong
authors.initials: YT
authors.lastname: Lin
authors.forename: Chi-Fang
authors.initials: CF
authors.lastname: Chen
authors.forename: Timothy F
authors.initials: TF
authors.lastname: Duda
authors.forename: Brian
authors.initials: B
authors.lastname: Calder
mesh_terms: D000162:Acoustics / Q000295:instrumentation; D003198:Computer Simulation; D005583:Fourier Analysis; D019015:Geologic Sediments; D005844:Geology / Q000295:instrumentation / Q000379:methods*; D008962:Models, Theoretical; D009038:Motion; D009624:Noise, Transportation; D009716:Numerical Analysis, Computer-Assisted; D009792:Oceans and Seas; D012767:Ships; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014159:Transducers; D014867:Water
chemical_list: D014867:Water