Accession Number : AD0834802

Title :   ACOUSTIC AND OTHER PHYSICAL PROPERTIES OF DEEP SEA SEDIMENTS IN THE TYRRHENIAN ABYSSAL PLAIN.

Descriptive Note : Technical rept.,

Corporate Author : SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s) : Kermabon, A. ; Gehin, C. ; Blavier, P. ; Tonarelli, B.

Report Date : 30 APR 1968

Pagination or Media Count : 56

Abstract : Twenty-one cores taken in the Tyrrhenian Abyssal Plain (40 n. mi west of Naples) were analyzed for acoustic and mass physical properties. Bottom topography and sub-bottom structure were measured in the same area by means of echo-sounding. The microtectonics of the bottom layers demonstrated by the core analysis is not visible in the echograms due to the integrating process of echo-sounders with large beam widths, thus demonstrating that echograms give only the general features of a geologically complicated area. To obtain a clearer idea of an extended zone, high-density coring is proposed, possibly by quick sampling methods such as developed by the authors using a resistivity probe. (Author)

Descriptors :   (*OCEAN BOTTOM, ACOUSTIC PROPERTIES), (*OCEAN BOTTOM SAMPLING, ITALY), OCEAN BOTTOM TOPOGRAPHY, MARINE GEOLOGY, SEDIMENTATION, ECHO RANGING, SOUND TRANSMISSION, ELECTRICAL RESISTANCE, POROSITY, UNDERWATER SOUND, VELOCITY, TEMPERATURE, HYDROSTATIC PRESSURE, SAND, CLAY.

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE