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- W2896536655 abstract "Although models of acoustic propagation in an ice-covered environment have been calculated using only finite elements, ray theory models can cover longer distances and higher frequency ranges much more efficiently. In this study, a hybrid approach is taken by calculating the reflection coefficient of the ice using finite elements over a range of frequencies and angles. These values are then inserted into a ray-theory model. Using this model, a study of the sensitivity of common approximations of the ice cover on acoustic propagation is conducted. For example, the ice can be described simply as a pressure release surface or much more complexly as an elastic body with range and depth geo-acoustic property variations. The hybrid finite element-ray theory model will be verified numerically by comparing it to a full finite element propagation model for appropriate ranges and frequencies. [Work sponsored by ONR, Ocean Acoustics.]" @default.
- W2896536655 created "2018-10-26" @default.
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- W2896536655 date "2018-09-01" @default.
- W2896536655 modified "2023-09-26" @default.
- W2896536655 title "Modeling acoustic propagation in an ice-covered environment using a hybrid finite element-ray theory approach" @default.
- W2896536655 doi "https://doi.org/10.1121/1.5068020" @default.
- W2896536655 hasPublicationYear "2018" @default.
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