DESCRIPTION OF THE MARINE ENVIRONMENT 

 AND OCEANOGRAPHIC PROCESSES 



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Bathymetric provinces in one section of the Western Pacific Ocean 

 as derived from geological data and bathymetric surveys. 



to an understanding of oceanic, longshore, and tidal current pat- 

 terns; to prediction of acoustic energy and its transmission 

 through the crust; and in determining reasons for interruptions 

 in sound channels. Therefore, bathymetric charts of the world's 

 oceans are prepared at various scales and at various isobath 

 intervals, and studies of the sea floor are made to determine pro- 

 vinces of similar structure, for example, basins, ridges, and rises, 

 as well as direction and degree of slope. 



