Glacier Photographed Surveyed 



Agpat X 



Hart X 



Sharp X 



Melville X 



Savage X 



Berlingske X 



Hurlbut X 



Chamberlin X 



Brother Johns X 



Dodge X 



San Martin X 



Hubbard X 



Marie X 



Unnamed ! X 



1971 (Glaciers from 1968 expedition resurveyed) 



Jacobshavn X X 



Rinks X X 



Uniamako X X 



Great Karajak X X 



Avangnarelleq 



(Torssukatak) X X 



Kujatdleq X X 



2. Redefinition of those glaciers considered 

 major iceberg producers by RADM E. H. 

 SMITH. Several that he felt contributed to the 

 ice patrol problem are now grounded and not 

 producing icebergs. Others, never visited by 

 SMITH, have been added to the major producer 

 list. 



3. Determination of floating glacier elevations 

 with over 120 measurements of height made. A 

 significant contribution since floating ice terminus 

 elevation data are virtually nonexistent in the 

 literature. 



4. Tidal measurements and a number of hori- 

 zontal movement vectors were determined for 

 Jacobshavn Glacier. On two different visits, 

 velocities of up to 21 meters per day were ob- 

 tained by optical observations. This is the fast- 

 est movement ever detected in a steady flowing 

 glacier. 



5. Time lapse motion pictures of Jacobshavn 

 Glacier obtained over 18 days. These pictures 

 disclose the glacier's flow movement to be sur- 

 prisingly, steady, river like in manner. 



6. Iceberg volume production estimates have 

 been computed for Jacobshavn Glacier showing 

 an annual production of 27.6 cubic kilometers of 

 ice. This is about 10% of the total iceberg vol- 

 ume produced by all of West Greenland. 



7. Homboldt Glacier, all 60 nautical miles of 

 its terminus, was surveyed from the ground us- 

 ing both land pin points and NAVSAT naviga- 

 tion for seaward measurements. This survey of 

 the terminus location of the largest glacier in the 

 northern hemisphere had never been accomplished 

 before. One interesting, finding is that with all 

 the prodigeous potential for iceberg production, 

 successive year aerial surveys showed the same 

 iceberg sitting in place, grounded and obviously 

 not part of the major supply of icebergs to the 

 Grand Banks region. The Explorers Club of 

 New York sent Explorer Club flag number 193 

 which was flown over the survey sites during this 

 first time survey of the Humboldt (1970). 



8. Petermann Glacier, 81°30'X, originally ob- 

 served during the ill-fated Hall-Polaris expedi- 

 tion of 1871-73, was found in 1970 to be a badly- 

 wasted, low profile floating ice tongue with no 

 iceberg production. It was surveyed and de- 

 scribed in 1872 as ''a confused accumulation of 

 bergs, crowded closely together, leaving such 

 spaces only as were due to irregularities of 

 form". Petermann fjord was full of icebergs 

 then and those icebergs could have come only 

 from Petermann Glacier. Hall's ship, the Po- 

 laris, wintered over there while moored to a giant 

 iceberg. In 1970, there were no icebergs nor a 

 possible source of icebergs within 100 miles of 

 Petermann fjord. 



9. The development of "in-house" expertise in 

 the field of glaciology by Captain KOLL- 

 MEYER through text book and journal studies 

 over the last eight years and on-site glacial work 

 during the survey expeditions. This includes the 

 development of several techniques of marking 

 glaciers to allow optical measurements of move- 

 ment to be performed both from the surface and 

 through the use of aerial photography. This 

 expertise within the Coast Guard has been re- 

 cently expanded because of the involvement of 

 LCDR Howard B. GEHRIXG, USCG and R. 

 Quincy ROBE. IIP Research. Coast Guard R&D 

 Center, in the 1976 survey expedition. 



With the data already obtained by the West 

 Greenland Glacier Survey, objectives 3 and 4 

 above have been accomplished. Objective 5 

 should be a continuing program for visiting 

 scientists as long as the survey is pursued and 

 space on the Icebreaker is available. Objective 

 1 has been accomplished with the exception of 



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