Experimental measurements of Scholte waves from underwater explosions collected off the coast of Virginia Beach, VA in shallow water are presented. It is shown here that the dispersion of these explosion-generated Scholte waves traveling in the sandy seabed can be modeled using a power-law dependent shear wave speed profile and an empirical source model that determines the pressure time-series at 1 m from the source as a function of TNT-equivalent charge weight.
References and links
1.
M. E.
dos Santos
,
M. N.
Couchinho
,
A. R.
Luis
, and
E. J.
Goncalves
,
“Monitoring underwater explosions in the habitat of resident bottlenose dolphins,”
J. Acoust. Soc. Am.
128
, 3805
–3808
(2010
).2.
D.
Rauch
,
“Seismic interface waves in coastal waters: A review,”
report, SACLANTCEN, La-Spezia, Italy (1980
).3.
F.
Gassmann
,
“Elastic waves through a packing of spheres,”
Geophysics
16
, 673
–685
(1951
).4.
O. A.
Godin
and
D. M.
Chapman
,
“Dispersion of interface waves in sediments with power-law shear speed profiles. I. Exact and approximate analytical results,”
J. Acoust. Soc. Am.
110
, 1890
–1907
(2001
).5.
A. D.
Pierce
and
W. M.
Carey
,
“Shear wave speed increases with depth to the one-sixth power in sandy-silty marine sediments,”
Proc. Meet. Acoust.
4
, 070006
(2008
).6.
D. R.
Jackson
and
M. D.
Richardson
, High-Frequency Seafloor Acoustics
(Springer
,
New York
, 2007
).7.
A. G.
Soloway
and
P. H.
Dahl
,
“Peak sound pressure and sound exposure level from underwater explosions in shallow water,”
J. Acoust. Soc. Am.
136
, EL218
–EL223
(2014
).8.
N. R.
Chapman
,
“Measurement of the waveform parameters of shallow explosive charges,”
J. Acoust. Soc. Am.
78
, 672
–681
(1985
).9.
N. R.
Chapman
,
“Source levels of shallow explosive charges,”
J. Acoust. Soc. Am.
84
, 697
–702
(1988
).10.
J.
Ewing
,
J. A.
Carter
,
G. H.
Sutton
, and
N.
Barstow
,
“Shallow water sediment properties derived from high-frequency shear and interface waves,”
J. Geophys. Res. Solid Earth.
97
, 4739
–4762
(1992
).11.
G.
Nolet
and
L. M.
Dorman
,
“Waveform analysis of Scholte modes in ocean sediment layers,”
Geophys. J. Int.
125
, 385
–396
(1996
).12.
C. S.
Hardaway
,
C. H.
Hobbs
III, and
D. A.
Milligan
,
“Investigations of offshore beach sands: Virginia Beach and Sandbridge, Virginia
,” report, Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, VA (1995
).13.
J. A.
Collins
,
G. H.
Sutton
, and
J. I.
Ewing
,
“Shear-wave velocity structure of shallow-water sediments in the East China Sea,”
J. Acoust. Soc. Am.
100
, 3646
–3654
(1996
).14.
D. M. F.
Chapman
and
O. A.
Godin
,
“Dispersion of interface waves in sediments with power-law shear speed profiles. II. Experimental observations and seismo-acoustic inversions,”
J. Acoust. Soc. Am.
110
, 1908
–1916
(2001
).15.
P.
Bergamo
,
L.
Bodet
,
L. V.
Socco
,
R.
Mourgues
, and
V.
Tournat
,
“Physical modeling of a surface-wave survey over a laterally varying granular medium with property contrasts and velocity gradients,”
Geophys. J. Int.
197
, 233
–247
(2014
).16.
Henrik
Schmidt
, Ocean Acoustics and Seismic Exploration Synthesis (OASES)
(Department of Ocean Engineering, Massachusetts Institute of Technology
,
Cambridge
, 2011
).17.
K.
Ohta
,
S.
Matsumoto
,
K.
Okabe
,
K.
Asano
, and
Y.
Kanamori
,
“Estimation of shear wave speed in ocean-bottom sediment using electromagnetic induction source,”
IEEE J. Ocean. Eng.
33
, 233
–239
(2008
).© 2015 Acoustical Society of America.
2015
Acoustical Society of America
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