Concept study of acoustic monitoring of temperature and current changes in the Fram Strait (AMOC)

• Main Authors: Hobæk, Halvor, Johannessen, Ola M., Sagen, Hanne, Naugolnykh, Konstantin A., Esipov, Igor B., Evert, Elena
• Format: Report
• Language: English
• Published: Zenodo 2001
• Subjects: Acoustics; Ocean; Fram Strait; Acoustic propagation; Mesoscale eddy; Topography; Ocean current; Temperature; Thermometry; Ray stability; Model
• Online Access: https://doi.org/10.5281/zenodo.7656137

Simulation of present and future acoustic propagation in the Fram Strait is carried out to investigate the sensitivity of acoustic methods for monitoring heat and volume fluxes in an area of strong mesoscale eddy activity. The tasks involved include (1) Topographical influence on the acoustic insonification of the Fram strait for optimal receiver and source configuration (2) Sensitivity study of acoustic propagation to temperature changes (3) Sensitivity study of acoustic propagation to current velocity changes. The report describes the general geophysical environment of the Fram Strait, the acoustical environment, the data sets used in this report and the acoustic models used for simulations; and ray stability during changing environmental conditions in the Fram Strait, which is relevant to acoustical thermometry. NERSC Technical Report no. 196. Funded by the European union under Contract no. ENV4-CT97-0463