Military Programs 



Table VI 1.1 — Ships for Navy Oceanographic Program 



Project VELA-UNIFORM 



To improve our ability to detect, locate and identify underground and 

 underwater nuclear explosions, the Advanced Research Projects Agency 

 (ARPA) has for a number of years conducted a program called VELA- 

 UNIFORM. Some of ARPA's significant marine science efforts during 

 FY 1967 and 1968 included : 



— seismic refraction measurements in the Aleutian Island region to 

 investigate velocity anomalies in the earth's crust and upper 

 mantle ; 

 — an ocean bottom seismograph experiment in international waters off 

 the Kurile Islands to study propagation characteristics of seismic 

 waves from earthquakes ; 

 — deployment and recovery of 27 untethered 30-day ocean-bottom seis- 

 mic recording units (ten are located in water more than 15,000 

 feet deep) . A system design was developed for an untethered 

 ocean-bottom seismograph (enclosed in a glass-pressure vessel) 

 capable of 120-day continuous recording in water as deep as 

 30,000 feet; 



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