Generating Acoustic Provinces for the U.S. Navy's Low Frequency Bottom Loss Database Using Geographic Information Systems
Abstract
The U.S. Navy's Low Frequency Bottom Loss (LFBL) database is released and maintained by the Naval Oceanographic Office (NAVOCEANO) and used as an environmental input to many of the Navy-standard tactical decision aids. It is designed to support the Navy's operational requirements in determining the nature of the interaction of 20-1000 Hz acoustic energy with the sea bottom. The general methodology of generating shallow-water LFBL databases was described in a previous paper. LFBL is based on acoustic and seismic measurements performed at-sea by NAVOCEANO survey teams and subsequent geo-acoustic inversions of the measured data using the Navy Standard Parabolic Equation (NSPE) model and the resources of the Navy Department of Defense Supercomputing Resource Center (Navy DSRC). LFBL is composed of a global database that is available worldwide and four regional databases for which additional acoustic and geological measurements were made. The global and regional databases use different parameter sets to describe bottom interactions. In the global database, a set of 10 parameters is used to describe an effective one-layer bottom.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2010
- Accession Number
- ADA527359
Entities
People
- Timothy H. Ruppel
Organizations
- Naval Oceanographic Office