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dc.contributor.authorSridevi, B.
dc.contributor.authorMurty, T.V.R.
dc.contributor.authorSadhuram, Y.
dc.contributor.authorMurty, V.S.N.
dc.date.accessioned2011-06-16T05:22:26Z
dc.date.available2011-06-16T05:22:26Z
dc.date.issued2011
dc.identifier.citationNatural Hazards, vol.57(3); 2011; 563-576
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/3863
dc.description.abstractInternal Wave (IW) characteristics and the impact of IW on acoustic field have been studied utilizing the hourly time series of temperature and salinity data collected at a coastal site off Paradeep (north Bay of Bengal) during 24-25 October 2008. The IW characteristics, viz. period (t sub (per)), velocity (C sub (vel)), wavelength (L), and wave numbers (k), are found to be 2.133-34.72 h, 0.135 km h sup (-1), 0.37-6.2 km and 2.70-0.16 cycles km sup (-1), respectively. The semi-diurnal tidal forces are predominant than diurnal as well as at other frequencies and its contribution is about 64% towards the total potential energy (E 0 = 3.34 J sup (-2)). Sound velocity perturbations with space and time in the presence of IW field are examined from Garrettt-Munk (GM) model. Transmission loss anomaly for optimized source-receiver configuration at the depth of 53 m and range of 9 km has been computed from acoustic modelling. The loss in the acoustic transmission is found to be 38.4 dB in the presence of low-frequency IW field.
dc.language.isoen
dc.publisherSpringer
dc.rightsAn edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2011] Springer.
dc.subjectInternal waves
dc.subjectGarrett-Munk model
dc.subjectAcoustic modelling
dc.subjectRay paths
dc.titleImpact of internal waves on the acoustic field at a coastal station off Paradeep, east coast of India
dc.typeJournal Article


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