Environmental Characterization using Ambient Seismic Sources
Abstract
Seismic surveys using arrays of airguns are a ubiquitous feature of the ocean ambient sound environment. This project will develop" techniques to use airguns as a sound source to study how physical oceanographic variability shapes long range acoustic propagation. Signal processing and data analysis tools will be developed to allow opportunistic use of commecial seismic surveys in the Gulf of Mexico (GOM) for environmental characterization. The project engages across-disciplinary team with expertise in underwater acoustics, physical ceanography, signal processing and large-scale modeling. Existing airgun propagation data will be analyzed, and new data will be collected with improved instrumental atomic clocks. These acoustic data will be compared to models generated from conventional physical oceanographic data collection forlarge scale features such as the Loop Current. This project will better our understanding of the long-range propagation of airgun signals,allowing them to potentially be used for active submarine detection, and for" them to be betteraccounted in estimates of ocean ambient noise structure.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 20, 2019
- Source ID
- N000141912583
Entities
People
- John A Hildebrand
Organizations
- Office of Naval Research
- United States Navy
- University of California, San Diego