. Basic acoustic oceanography. Underwater acoustics; Oceanography. FIGURE 2-8. TYPICAL METHOD OF CONTINUOUS SEISMIC PROFILING, NORMAL INCIDENCE RE- FLECTION ABOVE AND OBLIQUE REFLECTION BELOW, USED TO MEASURE SUB- BOTTOM STRUCTURE. (ADAPTED FROM M. N. HILL, ED., THE SEA, VOL. 3, INTER- SCIENCE, NEW YORK, 1963.) SHIP UNDERWAY SUFFICIENT DISTANCE TO APPROX. MINIMIZE SHIP'S NOISE 10 ft (« 800 ft) SPARK AND RECEIVER TOWED ASTERN WATER BOTTOM \\^s U B- bottomXN" REFLECTING HORIZONS Ifii SPARK 3 TO 5 ft — BELOW WATER SURFACE HYDROPHONE. PREFERABLY SHIP LYING TO HYDROPHONE MOVED AWAY FROM OR TOW
. Basic acoustic oceanography. Underwater acoustics; Oceanography. FIGURE 2-8. TYPICAL METHOD OF CONTINUOUS SEISMIC PROFILING, NORMAL INCIDENCE RE- FLECTION ABOVE AND OBLIQUE REFLECTION BELOW, USED TO MEASURE SUB- BOTTOM STRUCTURE. (ADAPTED FROM M. N. HILL, ED., THE SEA, VOL. 3, INTER- SCIENCE, NEW YORK, 1963.) SHIP UNDERWAY SUFFICIENT DISTANCE TO APPROX. MINIMIZE SHIP'S NOISE 10 ft (« 800 ft) SPARK AND RECEIVER TOWED ASTERN WATER BOTTOM \\^s U B- bottomXN" REFLECTING HORIZONS Ifii SPARK 3 TO 5 ft — BELOW WATER SURFACE HYDROPHONE. PREFERABLY SHIP LYING TO HYDROPHONE MOVED AWAY FROM OR TOWARD SPARK SOURCE —> FLOAT ^hydrophone\. 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 Schulkin, Morris; United States. Naval Oceanographic Office. Washington, D. C. : Naval Oceanographic Office
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Keywords: ., bookcentury1900, bookcollectionbiodiver, booksubjectoceanography
