LOW-FREQUENCY SOUND INTERACTION WITH A SLOPING, REFRACTING OCEAN BOTTOM

被引：7

作者：

COLLINS, MD

ALI, HB

AUTHEMENT, MJ

NAGL, A

UBERALL, H

MILLER, JF

ARVELO, JI

机构：

[1] SINGER CO,DIV LINK SIMULAT SYST,SILVER SPRING,MD 20904

[2] USN,CTR SURFACE WEAPONS,SILVER SPRING,MD 20903

[3] SYNTEK ENGN & COMP INC,ROCKVILLE,MD

[4] CATHOLIC UNIV AMER,DEPT PHYS,WASHINGTON,DC 20064

来源：

IEEE JOURNAL OF OCEANIC ENGINEERING | 1988年 / 13卷 / 04期

关键词：

Acoustic Waves--Refraction - Geophysics--Subaqueous - Oceanography--Sedimentation - Thermodynamics;

D O I：

10.1109/48.9236

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effects of refracting sediments on low-frequency sound propagation in range-dependent oceans are studied with parabolic equation models. The predictions of three sediment sound-speed models for low-frequency propagation are compared. Two factors that result in sediment sound-speed gradients are considered. Variation in static pressure due to the variation in the weight of overlying material causes sediment sound speed to increase with depth. The thermodynamic influence of the ocean results in large sound-speed gradients in a boundary layer in the uppermost layer of the sediment. The associated affects of attenuation on propagation are also considered. Both time-domain and frequency-domain results are presented.

引用

页码：235 / 244

页数：10

共 15 条

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[2]

ALI HB, 1987, NORDA NSTL220 TECH R

[3]

BENDER CM, 1978, ADV MATH METHODS SCI, P419

[4] LOW-FREQUENCY PROPAGATION VIA SHALLOW REFRACTED PATHS THROUGH DEEP OCEAN UNCONSOLIDATED SEDIMENTS [J].