Predicted scattering of sound by diffuse hydrothermal vent plumes at mid-ocean ridges
Duda, Timothy F.
Trivett, D. Andrew
MetadataShow full item record
Amplitude and phase fluctuations of monochromatic acoustic signals traveling through diffuse mid-ocean ridge hydrothermal vent plumes are modeled using existing theory in an attempt to find suitable frequencies and path lengths for plume monitoring. Weak-scattering solutions are evaluated numerically, with model parameters adjusted to match observed plume characteristics. Constraints required for weak-scattering solutions to be valid can be met for transmission ranges of 500–2000 m and frequencies of 20–80 kHz. Therefore, because fluid structure and scattering strength are more closely linked for weak scattering than for stronger scattering, inversion for fluid statistical properties may be possible, enabling diffuse vent monitoring. Such monitoring would be subject to geometric assumptions such as transmission entirely within a statistically homogeneous plume. Performance-limiting phase fluctuations have also been computed for a 13–17 kHz geodetic survey system.
Author Posting. © Acoustical Society of America, 1998. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 103 (1998): 330-335, doi:10.1121/1.421092.
Showing items related by title, author, creator and subject.
Differences between sound scattering by weakly scattering spheres and finite-length cylinders with applications to sound scattering by zooplankton Stanton, Timothy K.; Wiebe, Peter H.; Chu, Dezhang (Acoustical Society of America, 1998-01)A modeling study was conducted to determine the conditions under which fluidlike zooplankton of the same volume but different shapes (spherical/cylindrical) have similar or dramatically different scattering properties. ...
Sound scattering by several zooplankton groups. I. Experimental determination of dominant scattering mechanisms Stanton, Timothy K.; Chu, Dezhang; Wiebe, Peter H.; Martin, Linda V.; Eastwood, Robert L. (Acoustical Society of America, 1998-01)The acoustic scattering properties of live individual zooplankton from several gross anatomical groups have been investigated. The groups involve (1) euphausiids (Meganyctiphanes norvegica) whose bodies behave acoustically ...
Stanton, Timothy K.; Chu, Dezhang; Wiebe, Peter H. (Acoustical Society of America, 1998-01)Mathematical scattering models are derived and compared with data from zooplankton from several gross anatomical groups—fluidlike, elastic shelled, and gas bearing. The models are based upon the acoustically inferred ...