

ANDROS ISLAND 



'v:^Sy-~, 



ONE OR TWO retWAceS SCTWEXN 30 TO 40 M 

 SPURS AND a«XVES GCSeRALLf PHCSENT AND 

 TRENDING NORMAL TO REEF 

 MOST LUXURIANT CORAL DEVELOPMENT BE 'WEE 





H5^> ■-* i- 



MARGINAL IRIM) ESCARPMENT 



EDGE ABRUPT AND SOn«TIMES CWERnav 



NUP-CROVS CAVES, ■'EHRACeS, NOTCHES AND IRRECLAHlTiES. SLOf^ feOPEARS 

 VERTICA'. A«0 LfiCALur CONCWE- =£AIURES STROMec ^^GGES'^vE CF *t.'B- 

 AEfllAL OR iNTERnOAi. EROStOH SAN'^ -jX JMi. Li-|."N : ■- .-"vE? vASUf. 

 LOCALLY BENIHONIC ORGANISMS ^-=ii ^ - ■ 



AT lOOM 



IINiSM BELOW ITC M FIRST APPEARANCE OF 

 DEEP. 2-3 WWlDp'RErJD'NG DCWNSWPE. 

 :iJMULAT)ON GENcRALL' INCREA51SG. SLOPf 

 3PA01FNI APPEARS TO LESSes SETCEN ISOAJIO iSOM LARGE BLOCKS ■ 

 REEF D€TR|IUS SCATTEBES AT RANDOM, 



MAXJft RELIEF FEATUI 

 SMALL SCALE GUL^iE' 

 UNLiTHIF'ED SEDiMENI 



\ 



50 M. 



lOOM. 



■150 M, 



•130 M. 



FIGURES ANDROS ISLAND TO MARGINAL ESCARPMENT, TYPICAL BOTTOM FEATURES 



Fig. 1115 Andros Island to marginal escarpment, typical bottoni features. (Andres 

 Prune) 



RESEARCH INSTRUMENTS 



The instruments used for oceanographic 

 research from submersibles range from dis- 

 carded beer cans to sophisticated electronic 

 devices. In the former case, the amount of 

 sediment accumulation atop a "flip top" beer 

 can was estimated by R. F. Dill from the 

 DIVING SAUCER in 1965. Since the intro- 

 duction of this type of can into the particular 

 area was known, estimate of settlement ver- 

 sus time was attained. Between beer cans 

 and sophisticated electronics are perhaps 2,- 

 000 dives made for research purposes; and, 

 the equipment used varies almost with dive- 

 to-dive frequency. 



The greatest variety of research instru- 

 mentation originated within the Navy Elec- 

 tronic Laboratory's deep submergence pro- 

 gram beginning with TRIESTE I in 1959 and 



terminated with DEEPSTAR 4000 in 1968. 

 In the course of these 10 years NEL con- 

 ducted research dives in support of biology, 

 geology, acoustics, physics and geophysics. 

 Each diving scientist, of which there were 

 some 20, equipped the bathyscaph or the 

 submersible with off-the-shelf or newly de- 

 signed equipment suitable to his task. Sev- 

 eral hundred dives were made and the differ- 

 ent equipments are legion, and, in many 

 instances, one of a kind for a particular dive. 



On the east coast of the U.S. the Navy's 

 Underwater Sound Laboratory in New Lon- 

 don was involved with acoustic research and 

 also designed a variety of instruments to 

 measure and observe the behavior of under- 

 water sound. 



Other countries — including Canada, 

 France, Russia and Japan — were also active 



556 



