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Zenith Plateau
The Zenith Plateau is a large bathymetric high in the Indian Ocean, located about west-northwest of the Wallaby Plateau, west-northwest of Carnarvon, Western Australia, and north-west of Perth, Western Australia. The summit of the Zenith Plateau lies below sea level and its base is at about below sea level. It is about long and wide. In the east, the Zenith Plateau is separated from the Wallaby (Cuvier) Plateau by a wide, north to northeast-trending bathymetric trough.〔British Oceanographic Data Centre, 2003, ''GEBCO Digital Atlas.'' British Oceanographic Data Centre, National Environment Research Council, United Kingdom.〕 The Zenith Plateau lies outside of the Australian Exclusive Economic Zone.〔Sayers, J., I. Borissova, D. Ramsay and P. A. Symonds. 2002, ''Geological framework of the Wallaby Plateau and adjacent areas.'' Record no. 2002/21. Petroleum & Marine Division, Geoscience Australia, Canberra, West Australia.〕
As discussed by Amos〔Amos, J., 2014, (''Malaysia Airlines MH370: Searching in an ocean of uncertainty.'' ) BBC news, April 9, 2014. Retrieved April 13, 2014〕 and Beaman,〔Beaman, R., 2014, (''Zenith Plateau as the final resting place for MH370.'' ) Retrieved April 13, 2014. (Deep Reef Explorer ), James Cook University, Queensland, Australia. Retrieved April 13, 2014.〕 the bathymetry of the Zenith Plateau is very poorly mapped. Precise ocean floor depth data from bathymetric surveys, which used modern acoustic echosounders, across this undersea plateau are lacking. Transects across it by older, less precise singlebeam echosounder are few and insufficient to provide bathymetric data of significant detail. The bulk of the mapping is based upon coarse interpretation of satellite altimetry data in which the ocean floor bathymetry is inferred from measured variations in the elevation of the overlying sea surface.〔〔Sandwel, D. T., and W. H. F. Smith, nd, (''Exploring the Ocean Basins with Satellite Altimeter Data.'' ) (Bathymetry and Global Relief ), (National Geophysical Data Center ), National Oceanic and Atmospheric Administration, United States Department of Commerce, Washington, D.C. Retrieved April 13, 2014〕
==Name==
The Zenith Plateau is named after the cable ship ''Zenith'', which discovered it while surveying the cable route from Cocos (Keeling) Islands to Fremantle, Western Australia.〔British Oceanographic Data Centre, 2010, ''IHO-IOC GEBCO Gazetteer of Undersea Feature Names,'' August 2010 version. British Oceanographic Data Centre, National Environment Research Council, United Kingdom.〕 It was initially known as the Zenith Seamount as shown in the 1933 DMA Chart 5446 and the May 1975 Australian INT 708 chart. The Zenith Plateau is incorrectly designated as the ''Wallaby Plateau'' by a few official charts, some popular maps, American Association of Petroleum Geologists' maps, and the ACUF Gazetter. This confusion likely is the result of maps by Heezen and Tharp〔Heezen, B.C. and M. Tharp, 1965, ''Physiographic Diagram of the Indian Ocean (with descriptive sheet). '' Geological Society of America Inc., New York.〕〔Heezen, B.C. and M. Tharp, 1966., ''Physiography of the Indian Ocean.'' Philosophical Transactions of the Royal Society of London, A 259:137-149.〕 that incorrectly show the Zenith Plateau and the Wallaby Plateau as a single, composite bathymetric feature.〔〔Colwell, J. B., P. A. Symonds and A. J. Crawford, 1994, ''The nature of the Wallaby (Cuvier) Plateau and other igneous provinces of the west Australian margin.'' AGSO Journal of Australian Geology & Geophysics, 15(11):137-156.〕
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