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Titolo:
COMPARISON OF DATA AND MODEL PREDICTIONS FOR HEARD ISLAND ACOUSTIC TRANSMISSIONS
Autore:
MCDONALD BE; COLLINS MD; KUPERMAN WA; HEANEY KD;
Indirizzi:
USN,RES LAB WASHINGTON DC 20375
Titolo Testata:
The Journal of the Acoustical Society of America
fascicolo: 4, volume: 96, anno: 1994,
pagine: 2357 - 2370
SICI:
0001-4966(1994)96:4<2357:CODAMP>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROPAGATION; BERMUDA; OCEAN; AUSTRALIA; SPEED;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
B.E. Mcdonald et al., "COMPARISON OF DATA AND MODEL PREDICTIONS FOR HEARD ISLAND ACOUSTIC TRANSMISSIONS", The Journal of the Acoustical Society of America, 96(4), 1994, pp. 2357-2370

Abstract

Propagation paths and signal characteristics from the Heard Island Feasibility Test are modeled using a combination of adiabatic mode theory, coupled mode theory, and parabolic equation (PE) methods. Adiabaticmode theory predicts the horizontal propagation paths (including small grazing angle reflections from bathymetry), group travel times, and estimates of signal loss due to bottom interaction. The PE calculations are performed primarily to illustrate modal coupling near sharp oceanic fronts and bathymetry intruding into the sound channel. They are carried out in depth and range along selected horizontal ray paths. Forthe Heard Island to Christmas Island path, we carry out a time domainpulse transmission using coupled mode equations. The result gives a pulse envelope in approximate agreement with observations.

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Documento generato il 26/09/20 alle ore 14:45:57