5-8 Schematic Illustration (from Hey, 1977) of 

 the magnetic anomaly pattern resulting from 

 a propagating rift 69 



5-9 Magnetic anomaly chart of the Gorda Rise 70 



5-10 Amplitude spectrum of a long ba thyme trie 



profile spanning non-homogeneous reliefs .73 



5-11 Typical amplitude spectrum of relief from 



the Tufts Abyssal Plain, Northwest Pacific Ocean 74 



5-12 Typical amplitude spectrum of relief from 



the Ckjntinental Rise, east coast U.S 76 



5-13 Location of bathjrmetric profiles showing 



similar amplitude spectra 78 



6-1 Graphic representation of an elementary 



theoretical model for anisotropic surfaces 82 



6-2 Radial sampling pattern used in anisot- 



ropy s tudies 83 



6-3 Distribution of spectral parameters versus 



azimuth for theoretical anisotropic surface 85 



6-4 Location of two-dimensional SASS bathymetry 



from the Gorda Rise 89 



6-5 Graphic representation of bathymetry from 



the Gorda Rise 91 



6-6 Distribution of spectral parameters versus 



azimuth for Gorda Rise bathjnnetiry 92 



6-7 Comparison of model spectrum to measured 



spectrum for "worst case" profile 94 



6-8 Location of two-dimensional SASS bathym- 

 etry from the upper continental rise 95 



6-9 Graphic representation of bathymetry from 



the upper continental rise 97 



6-10 Distribution of spectral parameters versus 



azimuth for upper continental rise bath3nnetry 98 



6-11 Location of SEAMARC - 1 derived bathymetry 



from the Carteret Canyon 100 



xiv 



