日本財団 図書館


System Concept for Ocean Acoustic Tomographic Network in the North West Pacific

 

Kevin Heaney

Science Applications International Corporation

 

A notional system concept is presented for a nested acoustic tomographic array in the North West Pacific. This basin is chosen to provide the opportunity for the Japanese government and industry to provide a leading contribution to global climate monitoring and to increase the coverage of the ATOC network. A technology advance for low cost battery operated sources in the 30Hz band provides an increase of 2 orders of magnitude in acoustic energy efficiency. Together with satellite altimetry this technology enables an array design of 3 sources and 5-7 vertical line array receivers positioned from Guam to Hokkaido. The problem of scattering from seamounts as well as the Kuroshio will be examined with geometric options to minimize the risk to acoustic tomography. Simulations of broadband propagation (Rays, Adiabatic Modes and PE) along various paths will be presented as well as the spatial resolving ability of the network. Simulations have been conducted on coherence loss due to internal wave scattering and an argument for using lower frequency (〜30Hz) sources will be made.

 

 

 

BACK   CONTENTS   NEXT

 






日本財団図書館は、日本財団が運営しています。

  • 日本財団 THE NIPPON FOUNDATION