MAPPING THE NORTH PACIFIC OCEAN SEA FLOOR 



T. E. Chase 

 Associate Specialist in Marine Geology 



S. M. Smith 

 Associate Speciailist in Submarine Geology 



Scripps Institution of Oceanography 



Abstract ! A series of sea floor topographic and physiographic 

 charts of the North Pacific Ocean are being prepared for the Under- 

 sea Surveillance Oceanographic Center (NAVOCEANO). In addition, 

 reliable bathymetric and magnetic data throughout the Pacific are 

 being put into digital storage. 



Divided into three areas, the coverage consists of l60 topo- 

 graphic charts originally prepared at approximately 1:1,000,000 

 scale, then reduced to about 1:2,500,000 for printing into three 

 atlases; 10 composite contour charts, and 10 physiographic dia- 

 grams will be prepared for distribution throughout the scientific 

 and naval communities. 49 pharts between latitudes 0° to 60°N 

 and longitudes 100 °E to 160°E are completed and published in an 

 atlas form. Three composite charts covering the area are eilso 

 completed and undergoing color separation and printing. 



Computer programs have been developed to aid in processing 

 data, and to date 392,000 miles of bathymetry and 206,000 miles 

 of magnetics plus navigationeil tracks have been digitized. 



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