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GEOPHYSICAL RESEARCH LETTERS, VOL. 30, NO. 24, 2264, doi:10.1029/2003GL018614, 2003

Observations of surf infrasound in Hawai‘i

M. Garcés

HIGP, SOEST, University of Hawai‘i at M$\overline{a}$noa, Hawai‘i, USA


C. Hetzer

HIGP, SOEST, University of Hawai‘i at M$\overline{a}$noa, Hawai‘i, USA


M. Merrifield

HIGP, SOEST, University of Hawai‘i at M$\overline{a}$noa, Hawai‘i, USA


M. Willis

HIGP, SOEST, University of Hawai‘i at M$\overline{a}$noa, Hawai‘i, USA


J. Aucan

HIGP, SOEST, University of Hawai‘i at M$\overline{a}$noa, Hawai‘i, USA


Abstract

Comparison of ocean buoy measurements with infrasonic array data collected during the epic winter of 2002–2003 shows a clear relationship between breaking ocean wave height and infrasonic signal levels. In addition, infrasonic arrays allow the identification of distinct breaking zones along the shoreline. Our observations suggest that infrasonic measurements can be used in conjunction with buoys to estimate wave heights, identify regions of high wave action, and validate surface wave propagation models.

Received 12 September 2003; accepted 6 November 2003; published 20 December 2003.

Index Terms: 4560 Oceanography: Physical: Surface waves and tides (1255); 4594 Oceanography: Physical: Instruments and techniques; 4544 Oceanography: Physical: Internal and inertial waves; 0394 Atmospheric Composition and Structure: Instruments and techniques; 0350 Atmospheric Composition and Structure: Pressure, density, and temperature.

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Citation: Garcés, M., C. Hetzer, M. Merrifield, M. Willis, and J. Aucan (2003), Observations of surf infrasound in Hawai‘i, Geophys. Res. Lett., 30(24), 2264, doi:10.1029/2003GL018614.