Aeromagnetic surveys in southern and central West Greenland between 63° and 71°N

Abstract

A two-year programme of aeromagnetic investigations has been planned for certain areas of West Greenland.The work was started in 1975 from a base camp at SøndreStrømfjord with the majority of the operations taking place in the region south of 67°N. The airbome measurements of the total intensity ofthe earth's magnetic field were carried out in co-operation with the party doing radiometric work in the same part of Greenland (Secher, this report). The same aircraft and in part the same instruments were used. Next year, the work will be continued with the main emphasis on the regions north of 67°N. On completion of the airbome programme follow-up geophysical groundwork wili be initiated. In 1975 more than 30 000 km of magnetic profile were measured (fig. 22). Most of this (25 000 km) was located in grids covering approximately 40000 km2. At the time of writing most of the digital data is in the process of computer compilation, and only comments based on inflight observations and on inspections of the analogue records ean be presented here. This note therefore, deals with the extent of the field work, and points to some of the more obviously interesting features seen in the data.