Accession Number:

ADA183535

Title:

Geoacoustic Models of the Hudson Canyon Area

Descriptive Note:

Final rept.

Corporate Author:

NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS

Personal Author(s):

• Sellinger, C. E.
• Lavoie, D. L.

Report Date:

1987-01-01

Pagination or Media Count:

15.0

Abstract:

To better understand the interaction of sound wave propagation with the sea floor, three geographic sites were selected for modeling. These sites composed a region that begins at a water depth of 75 m and continues to approximately 5050 m. Surficial sediments range from a sand-silt-clay fluvial deposit on the shelf to a red clay and a clay-sized calcareous ooze. Structural features, such as the Hudson Canyon area, the Hatteras Outer Ridge, a lower Cretaceous carbonate reef, and a deep structural basin, play a strong historical role in shaping the sediment distribution and topography in this region. Several prominent horizons, are identified using graphically descriptive profiles. Three geoacoustic models of each site were developed using Hamiltons techniques. These models provide depth to horizons, compressional wave velocities, shear wave velocities, densities, and attenuation of the individual sediment type. Keywords Stratigraphy Submarine canyons.

Descriptors:

• *GEOACOUSTICS
• *STRATIGRAPHY
• *SUBMARINE CANYONS
• *UNDERWATER ACOUSTICS
• ACOUSTIC ATTENUATION
• BASINS(GEOGRAPHIC)
• CLAY
• CONTINENTAL SHELVES
• DEEP OCEANS
• DEEP WATER
• DENSITY
• DEPTH
• DISTRIBUTION
• GEOGRAPHY
• GEOLOGIC MODELS
• MODELS
• OCEAN BOTTOM
• OCEAN BOTTOM TOPOGRAPHY
• PROFILES
• RED(COLOR)
• SAND
• SECONDARY WAVES
• SEDIMENTS
• SILT
• SITES
• SOUND TRANSMISSION
• SOUND WAVES
• SPATIAL DISTRIBUTION
• STRUCTURAL GEOLOGY
• VELOCITY
• WATER

Subject Categories:

• Physical and Dynamic Oceanography
• Geology, Geochemistry and Mineralogy
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE