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

Grant Deane, Oskar Glowacki, Jaroslaw Tegowski, Mateusz Moskalik, Philippe Blondel

Research output: Contribution to journalArticle

13 Citations (Scopus)
135 Downloads (Pure)

Abstract

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.
Original languageEnglish
Article numberEL350
Number of pages7
JournalJournal of the Acoustical Society of America
Volume136
Issue number5
Early online date15 Oct 2014
DOIs
Publication statusPublished - 15 Oct 2014

Keywords

  • Glaciers
  • Ice
  • Noise propagation
  • Acoustic noise
  • Microphones

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