Accession Number:

ADA574860

Title:

Reconnaissance Marine Geophysical Survey for the Shallow Water Acoustics Program

Descriptive Note:

Annual rept.

Corporate Author:

TEXAS UNIV AT AUSTIN INST FOR GEOPHYSICS

Personal Author(s):

Report Date:

2012-09-30

Pagination or Media Count:

11.0

Abstract:

The outer New Jersey shelf has, over the past 25 years, evolved into a premier natural laboratory for Office of Naval Research efforts to understand the geology and the acoustic response of the seabed in shallow water environments. In great measure because of the large body of seabed information that exists in this region, the SWA06 program chose this locale for a combined low and mid frequency acoustics experiment, which was completed during summer, 2006. The SWA program sought to utilize these prior data related to the geology, geophysics and geoacoustics of the seabed, as well as new CHIRP reflection data collected in 2006 and coring samples collected in 2007, to establish an a priori structuralgeoacoustic constraints of the seafloor and subsurface along the intended propagation pathways used in the experiment Figure 1. The successful integration of geologicalgeophysicalgeoacoustic data into SW06 acoustic modeling efforts has led to recognition, expressed clearly at the recent SW06 workshop in Austin, that gathering such data should be considered an essential component of any forthcoming SWA experiment. Ideally, reconnaissance geophysical data will be collected well prior to the acoustic experiment in order to provide background data for planning purposes. During or after the experiment, additional data should be collected that directly supports the acoustic path geometries associated with the experiment.

Subject Categories:

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

Distribution Statement:

APPROVED FOR PUBLIC RELEASE