Greenland ice cap aeromagnetic survey 1984: reconnaissance lines in southern Greenland

Abstract

No large-scale systematic operations over the Greenland ice cap were planned for 1984. However, in April 1984 the possibility arose of obtaining data along some reconnaissance lines in South Greenland, using the same aircraft and instrumentation as in 1983 (Thorning et al., 1984). From bases at Keflavik in Iceland, and Søndre Strømfjord and Narssarssuaq in Greenland, four lines were flown in South Greenland, starting over the ice cap near Ivigtut and extending well offshore south-east of Kap Farvel (fig. 29). A long offshore tie-line was flown from the Denmark Strait around the south tip of Greenland and into the Davis Strait joining the tie-line flown there in 1983 (Thorning et al., 1984). A planned flight line, starting well offshore south of Greenland and folIowing the eastern rim of the ice cap north to the survey area of the 1983 operations (Thorning et al., 1984) had to be abandoned because one engineof the Convair 580 developed a problem which effectively closed down further operations on this occasion.