The itinerary of the R/V HORIZON during LUSIAD was scheduled as follows: 



Arrived 1962 Sailed ■ Program 



Conduct underway reflection pro- 

 filing of Red and Arabian Seas. 



In company R/V ARGO; two- ship 

 seismic refraction work under 

 Drs, George G. Shor, R. W. Raitt, 

 and R. L. Fisher, bottom- sampling, 

 hydrographic casts, heat-flow 

 measurements . 



Besides serving as consort to the R/V ARGO between Cochin and Port Darwin, 

 the HORIZON carried out hydrographic and heat flow studies (von Herzen, 1963) 

 between Suez and Cochin, and from Port Darwin she returned to San Diego via 

 the Pacific. Figure 1 shows the track of MONSOON and Figures 2 to k that of 

 LUSIAD. 



The third planned Scripps cruise, Expedition DODO, will be carried out by 

 the R/V ARGO between July and October 196U under W. R. Riedel. Emphasis 

 will be on detailed stratigraphic, geochemical, and heat flow development in 

 the central and eastern Indian Ocean where earlier cruises have indicated 

 areas of especial interest. Continuous underway magnetometer recordings will 

 also be made . 



LAMONT GEOLOGICAL OBSERVATORY 



Three cruises of the R/v VEMA have been planned as part of the IIOE. 



VEMA 16 Itinerary 



Arrived 



1959 



Sailed 



I960 



22 January 

 22 February 

 1^ March 

 31 March 



Cape Town 



Mauritius 

 Fremantle 

 Adelaide 

 Wellington 



27 December 

 i960 



25 January 



26 February 

 16 March 



Under the direction of C. Fray, as Chief Scientist, VEMA made the passage from 

 Cape Town to Mauritius and from Mauritius to Fremantle. More than 8,300 miles 

 of topographic track was recorded with a precision depth recorder in the 

 southern Indian Ocean. The existence of a mid-ocean ridge and associated rift 

 valley was verified by six crossings of this topographic feature ^Ewing and 

 Heezen, i960). -A towed magnetometer produced a continuous plot of the total 

 intensity of the earth's magnetic field along the ship's track. 



15 



