Abstract
Previous work by Guoliang and Wadhams [Prog. Oceanog. 22, 249–275 (1989)] has shown that reflections of acoustic rays by a sea ice cover can significantly affect acoustic travel times in an ocean tomography experiment. This can lead to warm or cold biases in the ocean inversions, if unaccounted for. This paper presents a discussion of how one deals with correcting the travel times of acoustic arrivals seen in the 1988–1989 Greenland Sea tomography experiment for ice effects. The discussions will include: generalization of the beam displacement formalism of Guoliang and Wadhams, determination of the reflection coefficient versus incidence angle of the rays using scattering amplitude data, estimation of beam displacements and time delays, and effects of the corrections on inversions for the ocean temperature field. Directions for future work will also be discussed. [Work supported by ONR and NSF.]
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