Accession Number : ADA323141

Title :   ULF/VLF Noise on Basalt and Sediment (NOBS).

Descriptive Note : Final rept.,

Corporate Author : SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB

Personal Author(s) : Dorman, LeRoy M.

PDF Url : ADA323141

Report Date : OCT 1996

Pagination or Media Count : 10

Abstract : This experiment undertook a comparison between noise and seismic signal fields on seafloor of two different structural types. Arrays of newly constructed ONR OBS's were deployed on the flanks of the Gorda Ridge, Juan De Fuca Ridge, and in the Cascadia Basin. These instruments made simultaneous observations of seafloor noise, in addition to some earthquakes. The primary question addressed was 'Is seafloor noise smaller at hard-bottom (basalt) seafloor sites than it is at thickly-sedimented sites?'. The answer depends on the frequency.

Descriptors :   *GEOACOUSTICS, *SEISMOLOGY, *OCEAN BOTTOM SOILS, BASALT, SEISMIC WAVES, EARTHQUAKES, SEDIMENTS, NOISE(SOUND), LOW FREQUENCIES, JUAN DE FUCA STRAIT.

Subject Categories : Geology, Geochemistry and Mineralogy
      Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE