19 temperature-pressure recorders) will be set at about the same 

 longitude as the Soviet current meter array, but about 200 km 

 to the north in May 1978. The region of density surveys 

 and SOFAR float tracking will encompass both current meter 

 arrays. Results will be summarized in atlases, joint papers, and 

 monographs. 



Other Programs 



A number of mesoscale experiments, which have common 

 scientific objectives with POLYMODE, are scheduled for the 

 North Atlantic Ocean in calendar years 1977 through 1979. 



North East Atlantic Dynamics Study (NEADS). Six single sub- 

 surface moorings were set in January 1977, in the Eastern Basin 

 of the Atlantic by scientists of France, West Germany, and 

 United Kingdom. These moorings were instrumented with cur- 

 rent meters, temperature, and some pressure recorders at 600, 

 1,500, 3,000, and 5,000 m above the sea floor. They will be 

 maintained for up to 2 years in the northern half of the eastern 

 North Atlantic basin. The mooring sites are widely spread and 

 generally far removed from large topographic features to gain 

 geographical and statistical information about energy levels, time 

 scales, and vertical structure of currents, and to evaluate some 

 Reynolds stresses. The moorings were recovered and redeployed 

 in December 1977. 



The Bedford Institute Array. To study the highly variable cur- 

 rents under the Gulf Stream, the Bedford Institute of Ocean- 

 ography in Canada maintained three subsurface moorings in a 

 cluster under the axis of the Gulf Stream at 40°N, 56°W from 

 December 1975 to May 1977. The moorings were anchored at 

 a depth of nearly 5,200 m and had temperature-equipped 

 Aanderaa current meters at 4,000 and 4,760 m. 



In May 1977, a new three-mooring array was deployed near 

 38°N, 50°W. The array will be maintained until late 1978. 

 Each mooring will carry instruments at 4,000 and 4,750 m in 

 about 5,400 m deep water. 



Surface Drifters. The Laboratoire d'Oceanographie Physique of 

 France proposes to deploy about 30 drogued surface drifters in 

 a cluster to describe mesoscale features in the surface layer. The 

 drifters provide a measure of currents in the upper 10 m and 

 would be equipped with thermistor chains extending below the 

 seasonal thermocline. The data from these buoys would be in- 

 tegrated with very high resolution satellite radiometric surface- 

 temperature measurements. The buoys will be deployed in 1978 

 in the eastern basin of the Atlantic in coordination with the 

 NEADS moorings. 



MODE and POLYMODE Data 



MODE and POLYMODE data received during the period 



of this report are available from NODC as follows: 



NODC Accession No.: 78-0028 



Organization: WHOI 



Investigators: K. Bradley (WHOI), C. Wunsch (MIT), T. Rossby 

 (URI) 



Grant No.: OCE75-03998, IDO75-18930, OCE75-03962 



Project: POLYMODE Array 1 



Data: 7 moorings, 27 current meters at 500, 1,000, 2,000, and 

 4,000 m depths, 20 temperature and pressure sensors, from 

 28°N 70°W to 55°W and 60°W, from 28°N to 34°N, July 

 1974 to May 1975. Data received at NODC on two reels of 

 magnetic tape. 



Setting current meters aboard the U.S.S.R. RV Bugaev, July 1977. 



NODC Accession No.: 78-0022 



Organization: University of Rhode Island/Woods Hole Ocean- 

 ographic Institution 



Investigator(s): P. Richardson (WHOI), T. Rossby (URI) 



Grant No.: OCE75-08765, NSF/OCE75-18930 



Project: POLYMODE Eddies 



Data: 1 1 CTD stations in the western North Atlantic taken 

 aboard RV Trident, cruise TR-175, November 20 to De- 

 cember 10, 1975. Data received on magnetic tape in GATE 

 format. 



NODC Accession No.: 77-0831 



Organization: Woods Hole Oceanographic Institution 



Investigator: Keith Bradley (WHOI) 



Grant No.: OCE75-03962 



Project: POLYMODE Eddies 



Data: 13 CTD stations in the western North Atlantic taken 



aboard RV Chain, cruise CH-129, December 3 to 23, 1975. 



Data received on magnetic tape in GATE format. 



NODC Accession No.: 77-083 1 



Organization: Woods Hole Oceanographic Institution 

 Investigator: P. Richardson (WHOI) 

 Grant No.: OCE75-08765 



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