Ocean Acoustic Propagation: Fluctuations and Coherence in Dynamically Active Shallow-Water Regions

Abstract

LONG TERM GOALSThe goals are to understand the nature and causes of acoustic signal fluctuations in the shallow water environment (i.e. the physical mechanisms). This may enhance prediction of acoustic system performance and enable exploitation of oceanographic variability and signal features. Here, signal means any identifiable acoustic reception, including sounds of unknown origin, identifiable signals from discrete sources, and intentional signals. Report Documentation PageForm Approved OMB No. 0704-0188Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.