Coherent ray propagation through a Gulf Stream Ring
作者:
N. L. Weinberg,
X. Zabalgogeazcoa,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1976)
卷期:
Volume 60,
issue S1
页码: 33-33
ISSN:0001-4966
年代: 1976
DOI:10.1121/1.2003286
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Coherent ray‐tracing techniques were applied to describe acoustic propagation through a Gulf Stream Ring 320 km in diameter as measured in 1973. Rays were traced from a fixed source to a fixed receiver 445 km distant incorporating the profile variations of the Ring which had a forward movement of 4 km a day. This anomaly shifted the deep sound channel axis about 400 m and also decreased the minimum sound velocity. These profile variations caused significant changes in the arrival pattern of the ray types and number of cycles. A time history is presented of the relationships between the received signal variations and the passage of the Ring including the effects of the changes in multipath structure.
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