Underwater acoustic signatures of glacier calving

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

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Climate-driven ice-water interactions in the contact zone between marine-terminating glaciers and the ocean surface show a dynamic and complex nature. Tidewater glaciers lose volume through the poorly-understood process of calving. A detailed description of the mechanisms controlling the course of calving is essential for the reliable estimation and prediction of mass loss from glaciers. Here we present the potential of hydroacoustic methods to investigate different modes of ice detachments. High-frequency underwater ambient noise recordings are combined with synchronized, high-resolution, time-lapse photography of the Hans Glacier cliff in Hornsund Fjord, Spitsbergen to identify three types of calving events: typical subaerial, sliding subaerial and submarine. A quantitative analysis of the data reveals a robust correlation between ice impact energy and acoustic emission at frequencies below 200 Hz for subaerial calving. We suggest that relatively inexpensive acoustic methods can be successfully used to provide quantitative descriptions of the various calving types.
LanguageEnglish
Pages804-812
Number of pages8
JournalGeophysical Research Letters
Volume42
Issue number3
Early online date13 Jan 2015
DOIs
StatusPublished - 16 Mar 2015

Fingerprint

glaciers
underwater acoustics
glacier
acoustics
signatures
ice
underwater noise
tidewater glacier
acoustic method
chronophotography
ambient noise
acoustic emission
contact zone
Spitsbergen (Norway)
photography
fjord
cliff
cliffs
quantitative analysis
sliding

Keywords

  • acoustics
  • underwater noise
  • glacier
  • fjord
  • climate change
  • subsea technology

Cite this

Glowacki, O., Deane, G., Moskalik, M., Blondel, P., Tegowski, J., & Błaszczyk, M. (2015). Underwater acoustic signatures of glacier calving. Geophysical Research Letters, 42(3), 804-812. https://doi.org/10.1002/2014GL062859

Underwater acoustic signatures of glacier calving. / Glowacki, Oskar; Deane, Grant; Moskalik, Mateusz; Blondel, Philippe; Tegowski, Jaroslaw; Błaszczyk, Małgorzata.

In: Geophysical Research Letters, Vol. 42, No. 3, 16.03.2015, p. 804-812.

Research output: Contribution to journalArticle

Glowacki, O, Deane, G, Moskalik, M, Blondel, P, Tegowski, J & Błaszczyk, M 2015, 'Underwater acoustic signatures of glacier calving', Geophysical Research Letters, vol. 42, no. 3, pp. 804-812. https://doi.org/10.1002/2014GL062859
Glowacki O, Deane G, Moskalik M, Blondel P, Tegowski J, Błaszczyk M. Underwater acoustic signatures of glacier calving. Geophysical Research Letters. 2015 Mar 16;42(3):804-812. https://doi.org/10.1002/2014GL062859
Glowacki, Oskar ; Deane, Grant ; Moskalik, Mateusz ; Blondel, Philippe ; Tegowski, Jaroslaw ; Błaszczyk, Małgorzata. / Underwater acoustic signatures of glacier calving. In: Geophysical Research Letters. 2015 ; Vol. 42, No. 3. pp. 804-812.
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