香料
等倍醛
地质学
散射
倾斜(摄像机)
声学
声速
混合层
声能
声音(地理)
光学
物理
海洋学
数学
几何学
作者
Edward Richards,John A. Colosi
出处
期刊:Journal of the Acoustical Society of America
[Acoustical Society of America]
日期:2023-10-01
卷期号:154 (4): 2154-2167
摘要
A 400-m deep and 970 km long conductivity, temperature, depth section in the Northeast Pacific Ocean is decomposed into sound-speed variations associated with tilting isopycnals and ocean spice. The vertical distribution of sound-speed variance from these two processes shows significant fluctuations in the mixed layer (ML) and transition layer (TRL) below. Acoustic simulations at 400 and 1000 Hz are conducted with the decomposed fields to quantify their relative impact on upper ocean propagation for source locations in the ML and TRL. The low frequency simulations show that localized scattering processes dominate the propagation while higher frequencies experience more diffuse scattering. For propagation in the ML, spice generates the most loss while tilt can reduce loss when combined with spice. Statistics further show that energy can couple into and out of the ML duct depending on source depth and frequency.
科研通智能强力驱动
Strongly Powered by AbleSci AI