Skip to main content
padlock icon - secure page this page is secure

Acoustical Characteristics and Simulated Tomographic Inversion of a Cold Core Eddy in the Bay of Bengal

Buy Article:

$30.00 + tax (Refund Policy)

Acoustic characteristics of a subsurface, cold core eddy observed in the Bay of Bengal during the southwest monsoon period is presented based on conductivity temperature depth data from 42 stations. The effect of the eddy is to reduce the ambient sound speed by about 10 m/s. Under the influence of the eddy, the depth of the SOFAR channel axis remains constant (1600 m), which otherwise should have shown a deepening in this region. Simulated ray arrival structure depicts the typical characteristics of a weak acoustic wave guide in the Bay of Bengal – the early arrival cluster of near-axial flat angle rays, later arrivals of deep turning rays, followed by the weak latest arrivals of near-surface turning rays. The arrivals of the acoustic rays are delayed by about 100–200 ms under the influence of the eddy. The intensity computations show that when a ray passes through the eddy, it suffers an additional loss of 20–25 dB. From the simulated travel time delays, the eddy profile is reconstructed through a generalised inversion, based on the singular value decomposition technique, the numerical experiment shows that 18 eigenrays with 9 layers enable reconstuction of the eddy profile edequately using 9 eigenmodes.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: September 1, 1997

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Online User License
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more