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Seabed volume scatter dependence on difficult-to-measure parameters

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Języki publikacji
EN
Abstrakty
EN
Backscatter from the seabed can, for certain sediment types, frequencies and angles, be dominated by volume scatter from within the seabed. In the frequencies above about 100kHz, the penetration is small and gross layering within the seabed is not of concern. However, the scatter from the volume at these shallow depths is determined by the inhomogeneities in the sediment properties, in particular their correlation structure. The sensitivity of the backscatter to the spatial correlation structure of the scatterers is highlighted in this paper.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
147--154
Opis fizyczny
Bibliogr. 18 poz, rys.
Twórcy
autor
  • University of Bath Department of Physics, Bath, BA2 6QE, UK
Bibliografia
  • [1] C.M.McKinney, C.D.Anderson, Measurements of backscattering of sound from the ocean bottom, , J.Acoust. Soc.Amer. 36,158-163,(1964)
  • [2] A.P.Lyons, A.L.Anderson, F.,S.Dwan, Acoustic scattering from the seafloor: Modeling and data comparison J.Acoust.Soc.Amer. 95,2441-2451, (1994)
  • [3] D.R.Jackson, D.P.Winebrenner, A.Ishimaru Application of the composite roughness model to high frequency bottom backscattering, J.Acoust.Soc.Amer. 79,1410- 1422,(1986)
  • [4] High Frequency Ocean Environmental Acoustics Models Handbook, APL-UW Technical Report TR 9407, Oct 1994
  • [5] D.R.Jackson, D.P.Winebrenner, A.Ishimaru Application of the composite roughness model to high frequency bottom backscattering, , J.Acoust.Soc.Amer.79,1410- 1422,(1986)
  • [6] D.R.Jackson,A.M.Baird, J.J.Crisp, P.A.G.Thomson , High frequency bottom backscatter measurements in shallow water, , J.Acoust.Soc.Amer. 80,1188-1199,(1986)
  • [7] P.D.Mourad, D.R.Jackson, High frequency sonar equation models for bottom backscatter and forward loss Proc Oceans’89, IEEE NY 1168-1175, (1989)
  • [8] D.R.Jackson, K.B.Briggs, High frequency bottom backscatter: Roughness versu sediment volume scatterin, , J.Acoust.Soc.Amer. 92, 962-977,(1992)
  • [9] P.D.Mourad, D.R.Jackson, A model/data comparison for low frequency bottom backscatter J.Acoust.Soc.Amer. 94,344-358, (1993)
  • [10] V. Lupien, The role of scale structure in scattering from a random rough surface JASA 105, 2187-2202 ,(1999)
  • [11] E.Pouliquen, A.P.Lyons, N.G.Pace, T.H.Orsi, E.Michelozzi, L.Muzi, P.A.G.Thomson, Backscattering from unconsolidated sediments above 100kHz, Proc 5th ECUA, Lyon, France (2000)
  • [12] E.Pouliquen, A.P.Lyons, Backscattering from bioturbated sediments at very high frequencies, IEEE Oceanic Eng. 27, 388-402, (2002)
  • [13] The existence of a critical angle is precluded by the presence of attenuation. The attenuation ensures that all angles of refraction are complex. However it is useful to refer to the critical angle as a dividing angle between regions in which the intensity vector of the refracted wave has a significant vertical component and those regions in which the refracted wave intensity travels mainly parallel to the interface.
  • [14] M.Gensane Sea-bottom reverberation: the role of volume inhomogeneities of the sediment, , Ocean Reverberation, Ed.D.D.Ellis, 59-64, Kluwer,(1993)
  • [15] T.Yamamoto, Acoustic scattering in the ocean from velocity and density fluctuations in the sediments, , J.Acoust.Soc.Amer. 99,866-879, (1996)
  • [16] A.N.Ivakin, High frequency scattering from heterogeneous seabeds, , Proc 5th ECUA Lyon, France 1241-1246, (2000)
  • [17] P.C.Hines, Theoretical model of acoustic backscatter from a smooth seabed, , J.Acoust.Soc.Amer. 88,324-334, (1990)
  • [18] N.G.Pace, http://staff.bath.ac.uk/pysngp/ The derivation of the expression may be found here together with the derivation of an equivalent expression for the bistatic scatter coefficient due to volume inhomogeneities.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWM8-0034-0020
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