Abstract
Low‐frequency acoustic signature of hurricane Ernesto
The Journal of the Acoustical Society of America, Vol.123(5), pp.3624-3624
05/2008
DOI: 10.1121/1.2934847
Abstract
The ambient noise level variations produced by Hurricane Ernesto were observed by the SWAMI32, SWAMI52 and SHARK arrays as the storm passed over the SW06 shallow water site. Microseism signals were detected in the water column near 0.1 Hz and were tracked with a beamformer over a period of several days observing variations that were very closely linked to measured surface waves. 5‐75 Hz beamforming showed a sound‐field dominated by local surface‐noise punctuated by brief surges of noise from distant sources. Beamforming and time‐domain cross‐correlations showed that changes in acoustic environment on the time‐scale of hours occurred at all three arrays with good correlation in time and directionality suggesting the storm induced noise‐field is homogeneous over many kilometers.
Details
- Title: Subtitle
- Low‐frequency acoustic signature of hurricane Ernesto
- Creators
- James TraerPeter GerstoftLaura BrooksWilliam HodgkissDavid Knobles
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.123(5), pp.3624-3624
- DOI
- 10.1121/1.2934847
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Language
- English
- Date published
- 05/2008
- Academic Unit
- Psychological and Brain Sciences; Iowa Neuroscience Institute
- Record Identifier
- 9984065469802771
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