Αποτελέσματα Αναζήτησης
31 Μαΐ 2024 · It proposes two methods for EOF reconstruction of measured sound speed profiles extended to full water depth by splicing measured sound speed profiles at non-full water depths with historical average sound speed profiles of the surveyed sea area.
- The Effects of Sound Speed Profile to the Convergence Zone in Deep Water
The structure of a sound speed profile (SSP) in deep water...
- Geoacoustic Estimation of the Seafloor Sound Speed Profile in Deep ...
Our geoacoustic model consisted of three layers: (1) a layer...
- The Effects of Sound Speed Profile to the Convergence Zone in Deep Water
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.
1 Αυγ 2020 · This article introduces and evaluates a cost efficient method for reconstructing the full-depth SSP, which is to launch Expendable Bathythermograph (XBT) or Expendable Conductivity Temperature Depth (XCTD) underway, and jointly use the World Ocean Atlas 2018 (WOA2018).
13 Δεκ 2021 · Our geoacoustic model consisted of three layers: (1) a layer of thickness H 1 and a sound speed profile c w that vary with seasonality, (2) a sub-seafloor layer of thickness H 2 and the sound speed at the seafloor c 0, which increased with depth due to a positive sound-speed gradient K, and (3) a salt layer of infinite thickness with a sound ...
25 Νοε 2022 · The SSP can be calculated using the sound speed empirical formula, combined with water temperature and salinity. The temperature profile can be inverted by sea surface parameters, and it has a relatively stable temperature–salinity relationship with the salinity profile.
22 Μαρ 2022 · Having quantified the sound speed variations in each target area and for multiple depth levels, we found that climate-change-induced sound speed variations are substantial, reaching up to 1.5% (approximately 20 m/s) and exceeding the SS seasonal variability.
