By D. Schofield (auth.), Harold M. Merklinger (eds.)

IMAGE TRACKS AT HALIFAX through L.B. Felsen All dwelling style a lot attempt spend a few version modes, a few version rays, to deal with their atmosphere a few consider that spectra all portrays. a few use their eyes, a few use their nostril Then there are those that with despatch, To feel the place different issues repose. Take safe haven within the ocean wedge. For one team, nothing's extra profound Than to discover the realm with sound. If issues get messy, randomize. those audio diagnosticians what is in part tender, determinize. You give some thought to, is it this or that? pass through the identify of acousticians. and need you have been a lowly bat they frequently meet to examine even if their sonogram's on target. The meeting's hosts did deal with us good. With pictures kept of their packs, They enable the weather forged its spell. This yr they got here to Halifax. No weath'ry wish was once positioned in useless. There they mixed with ocean varieties We have been uncovered to wind and rain, and every may pay attention the other's gripes. We glimpsed blue sky via clouds dispersed. a gathering obviously does begin yet wet series used to be reversed: Reviewing current kingdom of artwork. the sea forms would prefer it rainy What we discovered is the place it really is at: but they obtained caught with solar as a substitute. we won't wish to check the bat each one confrence has an analogous chorus: desktop printouts by means of the reams it's been enjoyable to satisfy again.

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1980, On an geoacoustical model of sediments upper layer in shallow sea, Dokl. All SSSR, 251:714 (In Russian). , 1961, Bottom reverberation for 530 and 1030 cps sound in deep water, J. Acoust. Soc. , 33:1498. , 1968, Bottom reverberation measured with explosive charges fired deep in the ocean, J. Acoust. Soc. Am. 44:508. "Physics of Sound in the Sea", 1946, SUmmary Tech. C. "Underwater Acoustics", 112, 1970, Hir, Hoscow (In Russian). , 1954, The backscattering of sound from a harbour bottom, J.

Coaparilll the first t"o terms ill the .. oothilll aass operator to those of the cOIl_cted dialrlll lIa .. operator we see that alilll Sq. (14) alld Sq. (10) IS1 = VEA .. VA1 .. 11 (I8) 45 and , IS .. LBAV(A-BA) .. I , U,) The two teras are eDctly equal. This cloes DOt continue however, and we have shown (DeSanto, 1986) that the two methods differ in third and higher orders. As a practical matter, DO one considers these hisher order terms, so that in transfol'll space the lowest order approximations are the sae.

1I5. Zhitkovskii Yu. , 1973, Comparison of pulse (explosive) and tonesignal methods of measuring the ocean bottom sound scattering strength, in "Proc. VIII All-Union Acoustical Conference", Hoscow (In Russian). Zhitkovskii Yu. , 1982, Sound scattering by ocean bottom, in: "Ocean Acoustics. State of art", Bauka, Moscow (In Russian). Zhitkovskii Yu. Yu. , 1965, Sound scattering from the ocean bottom, in: "Rapports du 5-e Congress International d'Acoustique", Liege. I. , 25:219 (In Russian). II. , 24:175.

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