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(a) Profile showing layer structure of the sound speed in the water due to temperature variations (b) Average sound speed profiles in different seasons in an area halfway between...
The axis of this channel is at the depth of minimum sound speed: typically 600-1200 m at low and middle latitudes (Figure 2.1a), but approaching the surface in Polar Regions.
This plot shows representative temperature, salinity, and sound speed profiles. Sound speed drops through the thermocline. From the base of the thermocline at 1200m down to the seafloor at 5000 m, temperature and salinity change very little, while pressure increases with increasing depth.
A sound speed profile shows the speed of sound in water at different vertical levels. It has two general representations: tabular form, with pairs of columns corresponding to ocean depth and the speed of sound at that depth, respectively.
15 Μαρ 2022 · The structure of a sound speed profile (SSP) in deep water causes refraction of sound rays and Convergence Zones (CZs) of high intensity where the rays focus at shallow depth. Study of sound field characteristics in the CZs has always been the focus of deep-water acoustics research.
1 Αυγ 2018 · Sound Speed Profile (SSP) is the key factor affecting underwater acoustics and it is of great value to obtain SSP in near real-time. In this paper, the sea surface data were used to reconstruct the SSP with the single empirical orthogonal function regression (sEOF-r) method in a global scale.
Resulting sound speeds cover most seawater areas from 82°S to 90°N at a spatial scale of 0.25 degrees, a temporal scale of monthly averages, and a variable depth scale. The resulting Rdata structures are made publically available.
