Resolving meso-scale seabed variability using reflection measurements from an autonomous underwater vehicle

The Journal of the Acoustical Society of America
Charles W HollandStan E Dosso

Abstract

Seabed geoacoustic variability is driven by geological processes that occur over a wide spectrum of space-time scales. While the acoustics community has some understanding of horizontal fine-scale geoacoustic variability, less than O(10(0)) m, and large-scale variability, greater than O(10(3)) m, there is a paucity of data resolving the geoacoustic meso-scale O(10(0)-10(3)) m. Measurements of the meso-scale along an ostensibly "benign" portion of the outer shelf reveal three classes of variability. The first class was expected and is due to horizontal variability of layer thicknesses: this was the only class that could be directly tied to seismic reflection data. The second class is due to rapid changes in layer properties and/or boundaries, occurring over scales of meters to hundreds of meters. The third class was observed as rapid variations of the angle/frequency dependent reflection coefficient within a single observation and is suggestive of variability at scales of meter or less. Though generally assumed to be negligible in acoustic modeling, the second and third classes are indicative of strong horizontal geoacoustic variability within a given layer. The observations give early insight into possible effects of horizontal...Continue Reading

References

Mar 30, 2000·The Journal of the Acoustical Society of America·C W Holland, J Osler
Oct 26, 2002·The Journal of the Acoustical Society of America·Martin SideriusPeter Gerstoft
Nov 1, 2003·The Journal of the Acoustical Society of America·Charles W Holland
Jul 16, 2005·The Journal of the Acoustical Society of America·Anna-Liesa S Lapinskia, David M F Chapman
Oct 2, 2007·The Journal of the Acoustical Society of America·Charles W HollandDouglas A Abraham
Feb 6, 2008·The Journal of the Acoustical Society of America·T C YangL T Fialkowski
Mar 19, 2008·The Journal of the Acoustical Society of America·Jan DettmerCharles W Holland
Feb 12, 2009·The Journal of the Acoustical Society of America·Jan DettmerCharles W Holland
May 12, 2009·The Journal of the Acoustical Society of America·Yong-Min Jiang, N Ross Chapman
Jul 17, 2009·The Journal of the Acoustical Society of America·Jan DettmerStan E Dosso
Oct 26, 2010·The Journal of the Acoustical Society of America·S Pinson, L Guillon
Nov 30, 2010·The Journal of the Acoustical Society of America·Charles W Holland
Jan 12, 2011·The Journal of the Acoustical Society of America·Jan DettmerCharles W Holland
Jul 19, 2013·The Journal of the Acoustical Society of America·S PinsonC W Holland

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Citations

Mar 8, 2013·The Journal of the Acoustical Society of America·Gavin SteiningerCharles W Holland
Aug 24, 2013·The Journal of the Acoustical Society of America·Gavin SteiningerJan Dettmer
Jul 19, 2013·The Journal of the Acoustical Society of America·S PinsonC W Holland
Mar 13, 2014·The Journal of the Acoustical Society of America·Caglar YardimJames Traer
Aug 7, 2014·The Journal of the Acoustical Society of America·S Pinson, C W Holland
Sep 6, 2014·The Journal of the Acoustical Society of America·Bien Aik TanWilliam S Hodgkiss
Oct 18, 2014·The Journal of the Acoustical Society of America·Gavin SteiningerJan Dettmer
Nov 2, 2015·The Journal of the Acoustical Society of America·Jorge E QuijanoCharles W Holland
May 23, 2015·The Journal of the Acoustical Society of America·S Pinson, C W Holland
Sep 3, 2016·The Journal of the Acoustical Society of America·Samuel PinsonLaurent Guillon
Feb 3, 2020·The Journal of the Acoustical Society of America·Derek R Olson, Charles W Holland
Nov 4, 2020·The Journal of the Acoustical Society of America·Derek R Olson, Darrell Jackson

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