Mid-frequency acoustic propagation in shallow water on the New Jersey shelf: mean intensity.
Mid-frequency (1-10 kHz) sound propagation was measured at ranges 1-9 km in shallow water in order to investigate intensity statistics. Warm water near the bottom results in a sound speed minimum. Environmental measurements include sediment sound speed and water sound speed and density from a towed conductivity-temperature-depth chain. Ambient internal waves contribute to acoustic fluctuations. A simple model involving modes with random phases predicts the mean transmission loss to within a few dB. Quantitative ray theory fails due to near axial focusing. Fluctuations of the intensity field are dominated by water column variability.
Tang
Dajun
D
Henyey
Frank S
FS
Wang
Zhongkang
Z
Williams
Kevin L
KL
Rouseff
Daniel
D
Dahl
Peter H
PH
Quijano
Jorge
J
Choi
Jee Woong
JW
D000162:Acoustics; D001267:Atlantic Ocean; D019015:Geologic Sediments; D008962:Models, Theoretical; D009038:Motion; D009515:New Jersey; D011825:Radar; D013016:Sound; D013018:Sound Spectrography; D013696:Temperature; D013997:Time Factors