Accession Number : AD0618485

Title :   OCEANOGRAPHIC AND UNDERWATER ACOUSTICS RESEARCH.

Descriptive Note : Progress rept. for 1 May-31 Oct 64.

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MASS

Report Date : MAR 1965

Pagination or Media Count : 80

Abstract : Geophysical investigations were carried out aboard R/V CHAIN in the Indian Ocean, the Mediterranean Sea, and the North Atlantic Ocean. Observations underway were continuous seismic profiling, gravity, magnetic, and echo sounding measurements. At stations rocks were dredged, cores were taken (about 10 meters long, photographic montages of the sea floor were made, and the sound velocity of the water was measured as a function of depth. Progress is being made in filtering and correlation techniques for seismic profiling, while seismic receiving arrays were improved to make them quieter. The analysis of internal wave data is continuing, but further observations at sea will be required in order to fully understand the mechanism of propagation. A new thermistor string intended to replace and improve upon the original thermistor chain was the principal new instrumental development.

Descriptors :   (*UNDERWATER SOUND, SCIENTIFIC RESEARCH), (*OCEANOGRAPHY, SCIENTIFIC RESEARCH), MARINE GEOPHYSICS, HYDROGRAPHIC SURVEYING, UNDERWATER SOUND EQUIPMENT, SOUND TRANSMISSION, OCEAN BOTTOM TOPOGRAPHY, ECHO RANGING, HYDROPHONES, OCEAN BOTTOM SAMPLING, ROCK, BATHYTHERMOGRAPH DATA, HEAT TRANSFER, OCEAN CURRENTS, UNDERWATER PHOTOGRAPHY, INDIAN OCEAN, ATLANTIC OCEAN, RED SEA, MEDITERRANEAN SEA, SEISMOLOGY

Distribution Statement : APPROVED FOR PUBLIC RELEASE