Browsing by Subject "OCEANOGRAPHIC SUPPORT SERVICES"
Now showing items 21-32 of 32
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Preliminary results of algorithms to determine horizontal and vertical underwater visibilities of coastal waters
(SPIE, 2016)Algorithms developed for underwater horizontal and vertical visibilities are presented. The algorithms have been developed to derive the underwater visibilities based on the contrast theory using the in-situ and Hydrolight ... -
Preliminary results of an algorithm to determine the total absorption coefficient of water
(Society of Photo-Optical Instrumentation Engineers, 2016)An algorithm to determine the spectral total absorption coefficient of water is presented. The algorithm is based on the Gershun’s equation of alfa = micro K<sub>E</sub>. The spectral underwater average cosine, micro and ... -
Range-based underwater vehicle localization in the presence of unknown ocean currents: Theory and experiments
(IEEE, 2016)This paper addresses the problem of range-based autonomous underwater vehicle (AUV) localization in the presence of unknown ocean currents. In the setup adopted, the AUV is equipped with an attitude and heading reference ... -
Remote-sensing perspective and GPR subsurface perception on the growth of a recently emerged spit at Talashil coast, west coast of India
(Taylor & Francis, 2014)The growth as well as the internal structure of the recently emerged Talashil spit along the west coast of India was studied using multidate satellite images coupled with ground-penetrating radar (GPR) information. Decadal ... -
Response of sheltered and built-up coasts in the wake of natural hazards: The aftermath of the December 2004 Tsunami, Tamil Nadu, India
(Springer, 2016)The geomorphology and the disposition of natural features and type of coast are major factors that control wave heights and govern consequent inundation distances. The connection between tsunami run-up heights and inundation ... -
Setting of cloud albedo in the atmospheric correction procedure to generate the ocean colour data products from OCM-2
(Springer, 2015)Cloud masking is one of the primary and important steps in the atmospheric correction procedure in particular to coastal ocean waters. Cloud masking for ocean colour data processing is based on the assumption that the water ... -
Storm and tsunami induced sediment transport and morphology changes in vicinity of tidal inlets
(Indian Institute of Technology, Madras, 2014)This study comprises of numerical modelling studies on the morphology changes in the vicinity of tidal inlets. Two real case scenarios comprising of a very severe cyclonic storm and the mega Indian Ocean tsunami were ... -
Teak (Tectona grandis L.f.): A preferred timber for shipbuilding in India as evidenced from shipwrecks
(Current Science Association, 2016)One of the greatest achievements of man is the design and development of a variety of watercraft suitable for marine and riverine purposes and safer for the environment. From ancient times, timber was the main component ... -
The impact of dredging on residence time in the Amba estuary, west coast of India
(Springer, 2016)In this study, residence time (RT) and flushing characteristics of the Amba estuary were estimated using a 2D depth-averaged model driven by hydrodynamics resulting from the bathymetry changes due to dredging carried out ... -
Trends of wave height and period in the Central Arabian Sea from 1996 to 2012: A study based on satellite altimeter data
(Elsevier, 2015)The variability of annual maximum and annual mean significant wave height (SWH) and wave period in the Central Arabian Sea is studied using satellite altimeter data from 1996 to 2012 at a deep water (water depth~3500 m) ... -
Use of marine robot`MAYA` for monitoring the Zuari and Mandovi esturine systems
(National Institute of Oceanography, Goa, 2015)Autonomous Surface Vehicles (ASVs) are gaining popularity among oceanographic, meteorological and defense research organizations (Motwani, 2012). The Autonomous Underwater Vehicle, MAYA designed and built at CSIR-NIO (Desa, ... -
Verification of model wave heights with long-term moored buoy data: Application to wave field over the Indian Ocean
(Elsevier, 2015)This paper describes the results obtained using a modified version (ModWAM) of the global wave model WAM, in which new parameterizations have been applied based on the seasonal changes and extreme weather events that have ...