It is emphasized that this is an ideal list and that all 

 of these properties are, at present, not determinable with 

 present technology or ability to measure. Most measure- 

 ments which can be done in s itu by lowered equipment, 

 from a submersible, or by logging in a drilled hole are 

 preferable to laboratory measurements, although the latter 

 are needed for associated studies, especially for future 

 prediction. Sediment sampling and bottom observations 

 can usually be most efficiently done from a submersible, 

 but in any event, great care should be exercised to get a 

 "least disturbed" sample with a properly designed sampler, 

 and to carefully preserve it under lowered temperature and 

 with 100 percent saturation (e_.g. , small samples under sea 

 water within a refrigerator). 



Two of the items above -- static shear strength (soil 

 mechanics test), and consolidation characteristics (soil 

 mechanics test) -- are of principal utility in computations 

 of sea-floor bearing capacity and stability as applied to 

 bottomed equipment (such as an array). Consolidation 

 tests are also used, as noted in the discussion of the Mohole 

 model, to estimate in situ porosities within the sediment, 

 which are closely connected with sound speed. 



Information other than sediment properties needed 

 for an ideal geoacoustic model are noted in the main text 

 (pp. 6-12). 



REVERSE SIDE BLANK 47 



