+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Enhanced backscattering in water by partially exposed cylinders at free surfaces associated with an acoustic Franz wave

Enhanced backscattering in water by partially exposed cylinders at free surfaces associated with an acoustic Franz wave

Journal of the Acoustical Society of America 135(5): 2489-2492

When a smooth curved object is lowered into water, the initial specular contribution to high frequency backscattering of sound is weak before the specular point on the object becomes illuminated by incident sound. The associated transition in reflection from a metallic cylinder viewed at grazing incidence was previously studied [Baik and Marston, IEEE J. Ocean. Eng. 33, 386-396 (2008)]. The present research involves analogous measurements of backscattering performed using short tone bursts facilitating improved temporal resolution of distinct mechanisms contributing to the backscattering. The measurements reveal the presence of a delayed contribution to the backscattering that evolves in time in a way consistent with a scattering contribution of an acoustic Franz wave. The wave appears to be partially reflected at the free surface after having been excited on the cylinder by the incident acoustic wave. For slightly exposed cylinders viewed at grazing incidence, the Franz wave mechanism dominated the observed backscattering.

(PDF emailed within 0-6 h: $19.90)

Accession: 052982271

Download citation: RISBibTeXText

PMID: 24815232

DOI: 10.1121/1.4870240

Related references

Shifted resonances in coated metamaterial cylinders: enhanced backscattering and near-field effects. Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics 77(4 Pt 2): 046604-046604, 2008

Enhanced backscattering of partially coherent light. Optics Letters 21(6): 369-371, 1996

Kirchhoff approximation for backscattering from a partially exposed rigid sphere at a flat interface. Journal of the Acoustical Society of America 140(5): 3582-3582, 2016

Backscattering enhancements for tilted solid plastic cylinders in water due to the caustic merging transition: observations and theory. Journal of the Acoustical Society of America 107(2): 689-698, 2000

Enhanced backscattering of light from deterministic quasi-periodic surfaces. Optics Letters 17(24): 1752-1754, 1992

Enhanced backscattering of light from weakly rough, random metal surfaces. Applied Optics 32(19): 3335-3343, 1993

Acoustic backscattering enhancements resulting from the interaction of an obliquely incident plane wave with an infinite cylinder. Ultrasonics 50(7): 675-682, 2010

A Klinefelter boy with congenital adrenal hyperplasia: too much or too little androgens?. Italian Journal of Pediatrics 44(1): 43-43, 2018

Enhanced backscattering from a free-standing dielectric film. Applied Optics 34(18): 3529-3534, 1995

Energy absorption patterns in circular triple-layered tissue cylinders exposed to plane wave sources. Health Physics 31(2): 97-108, 1976

Enhanced sensitive love wave surface acoustic wave sensor designed for immunoassay formats. Sensors 15(5): 10511-10525, 2015

Ground based x band 3 cm wave radar backscattering of agricultural crops i. sugar beet and potato backscattering and crop growth. Remote Sensing of Environment 34(2): 93-106, 1990

Measurement of the spatial backscattering impulse-response at short length scales with polarized enhanced backscattering. Optics Letters 36(24): 4737-4739, 2012

Wave attenuation in partially saturated sandstones at acoustic frequencies. SEG Abstracts 1981(1): 103, 1981

Acoustic backscattering by Atlantic mackerel as being representative of fish that lack a swimbladder. Backscattering by individual fish. ICES Journal of Marine Science 62(5): 984-995, 2005