. Acoustic transmission in an ocean surface duct : report on an experiment. Sound; Internal waves. AREAE INTERMEDIATE SOURCE .INTERMEDIATE HYDROPHONE- E3 THEORY ? EXPERIMENT A, rt-Tl '?M 700 cps CURVE 61 H~~L A; SXR- ?3 : L 11 h-M A3 i-H~ 1 ? 111. "U. AREAE INTERMEDIATE SOURCE INTERMEDIATE HYDROPHONE E3 THEORY CD EXPERIMENT A, -TTT i±I 1300 cps CURVE 62 ' ' ' A; 1 hh_. Figure 3. PING-TO-PING SIGNAL VARIABILITY: Compon ond 3000cps (Fi»2) ui Afeo II Bet«een 700cps, I300cps. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabi


. Acoustic transmission in an ocean surface duct : report on an experiment. Sound; Internal waves. AREAE INTERMEDIATE SOURCE .INTERMEDIATE HYDROPHONE- E3 THEORY ? EXPERIMENT A, rt-Tl '?M 700 cps CURVE 61 H~~L A; SXR- ?3 : L 11 h-M A3 i-H~ 1 ? 111. "U. AREAE INTERMEDIATE SOURCE INTERMEDIATE HYDROPHONE E3 THEORY CD EXPERIMENT A, -TTT i±I 1300 cps CURVE 62 ' ' ' A; 1 hh_. Figure 3. PING-TO-PING SIGNAL VARIABILITY: Compon ond 3000cps (Fi»2) ui Afeo II Bet«een 700cps, I300cps. 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 U. S. Navy Electronics Laboratory (San Diego, Calif. ); Arthur D. Little, Inc. Cambridge, Mass. : Arthur D. Little, Inc.


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