Accession Number : AD0741201

Title :   Sound Attenuation in Marine Sediments

Descriptive Note : Research rept. 1966-1971

Corporate Author : NAVAL UNDERSEA RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CA

Personal Author(s) : Hamilton, Edwin L

PDF Url : AD0741201

Report Date : Mar 1972

Pagination or Media Count : 54

Abstract : In situ measurements of compressional (sound) velocity and attenuation were made in the sea floor off San Diego in water depths between 4 and 1100 m; frequencies were between 3.5 and 100 kHz. Sediment types ranged from coarse sand to clayey silt. These measurements, and others from the literature, allowed analyses of the relationship between attenuation and frequency, relationships between attenuation and other physical properties, and study of appropriate viscoelastic models which can be applied to saturated sediments. Some conclusions are discussed.

Descriptors :   *UNDERWATER SOUND, ATTENUATION, CLAY, DEEP SUBMERGENCE, FRICTION, OCEAN BOTTOM, PACIFIC OCEAN, PARTICLE SIZE, POROSITY, PROBES, SAND, SEDIMENTATION, UNDERWATER VEHICLES, VELOCITY

Subject Categories : Physical and Dynamic Oceanography
      Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE