Accession Number:

ADA533364

Title:

Spatial Structure of Deep Water Acoustic Propagation

Descriptive Note:

Annual rept.

Corporate Author:

OCEAN ACOUSTICAL SERVICES AND INSTRUMENTATION SYSTEMS INC FAIRFAX STATION VA

Personal Author(s):

Report Date:

2008-09-29

Pagination or Media Count:

10.0

Abstract:

The long-term goals of this research are to understand the spatial and less so the temporal structure of deep-water acoustic propagation, with particular emphasis on deep-water ambient noise. Background noise in the open ocean is driven by local wind generated surface noise interference from nearby ships and at low frequencies is dominated by energy received from ships at significant distances. The extent to which scattering from seamounts, downslope conversion and internal waves affects the spatial structure mode composition of this ambient noise is the primary focus of this work. In spite of the deep water focus of this research, it turns out that sediment properties geo-acoustics of downslope regions and seamounts plays a role in the amount and type of scattering from these bathymetric features.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE