Directionality of the ambient noise field in an Arctic, glacial bay

TitleDirectionality of the ambient noise field in an Arctic, glacial bay
Publication TypeJournal Article
Year of Publication2014
AuthorsDeane GB, Glowacki O., Tegowski J., Moskalik M., Blondel P.
JournalJournal of the Acoustical Society of America
Date Published2014/11
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000344989000002

The directionality of ambient noise in an Arctic tidewater glacier bay was measured using two horizontally spaced, broadband hydrophones. Segments of noise were divided into two frequency bands and analyzed for arrival angle. These data show that different classes of source radiate noise in distinct spectral bands and are spatially diverse. A previously unidentified source, the interaction of surface gravity waves with underside of ice ledges at the periphery of icebergs, is described. The generation of noise by ice-wave interaction suggests that surface waves should be measured if ambient noise is to be used to monitor ice dynamics in glacial fjords. (C) 2014 Acoustical Society of America

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