. Acoustic scattering in the ocean. Project TRIDENT; Underwater acoustics; Sound-waves. Ill-49 ATTENUATION (db/inch). 8 10 12 14 16 18 FREQUENCY ( kc) FIGURE in-19 THEORETICAL AND OBSERVED ATTENUA- TIONS (AFTER LAIRD AND KENDIG) n(R) (cm--*) fr (kc) 16 1210 8 6 4 nrn—\ \—. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Meyer, R. F; Romberg, B. W; Arthur D. Little, Inc. Cambridge, Mass. : Arthur D. Little, Inc.

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