Limitations imposed by nonlinear phenomena on computation of acoustic paths |
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| Authors: | Ponomarev E A Sorokin A G |
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| Institution: | (1) Scripps Institution of Oceanography, University of California-San Diego, 9500 Gilman Drive, 92093-0230 La Jolla, CA, USA;(2) Applied Physics Laboratory, University of Washington, 1013 NE 40th Street, 98105-6698 Seattle, WA, USA |
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| Abstract: | Approaches for estimating the influence of nonlinear effects on long-distance propagation of acoustic signals in an isothermal
atmosphere are developed. It has been indicated that nonlinear effects can be ignored on paths up to 3000 km at beam angles
smaller than 35° (nonlinear absorption). However, the spectrum will be pronouncedly distorted at these distances due to the
generation of new harmonics (for initial Mach numbers about 10−4). |
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