of the University of Connecticut. MSI worked under contract to 

 NOAA's National Ocean Survey (NOS), who used IDOE funds to 

 support the project. More than 250,000 evaluated data points have 

 been compiled into NOAA Technical Reports, NOS 45 through 

 NOS 51 {table 2), that are available from Code D83, Technical 

 Information Division, Environmental Science Information Center, 

 NOAA. Washington, D.C. 20235. 



Tlie reports present the data in computer printout format and 

 include index maps that provide access to all data points in the 

 listings for any given geographic area. Table 3 shows survey ships 

 and year of data collection. Figure 32a delineates Pacific SEAMAP 

 areas for which 1961-70 evaluated data are available. Figure 32b 

 delineates those areas for which the National Ocean Survey is 

 compiling contour maps of bathymetry, gravity anomalies, and 

 magnetic anomalies. 



I20°W 



Table 3.— Pacific SEAMAP 1961-70 data acquisition by ship and year 



Ti 



~^~~^. 



16654-14 



^v. 



16648-14 



''y 16842-12 



16836-12 



17530-10 



-¥ 



1752410 



IT 



15254-14. C^"""''" 



ZSS 



15248-14; 



,m 



r m 



16530-10 1553010 



1652410 



1552410 



FIGURE 32.— Pacific SEAM.\P Areas: (A) For 

 which 1961-70 evaluated data in table 2 are avail- 

 able; and (B) for which contour maps of bathy- 

 metry, magnetic anomalies, and gravity anomalies 

 are being compiled. 



SEAMAP area 



Years of data collection— North Central Pacific 



Trans-Atlantic Geofraverse (TAG). This is a study of the corridor 

 between Cape Hatteras, North America, and Cap Blanc, Africa 

 (fig. 33). Its principal objective is to establish a standard crustal 

 section, about 3 in width, across the central North Atlantic be- 

 tween these two points, which are considered to have been joined 

 before North America separated from Africa. 



20 



