Open AccessA satellite magnetic anomaly map of Greenland
Author(s) -
Langel R. A.,
Thorning L.
Publication year - 1982
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1982.tb02787.x
Subject(s) - magnetic anomaly , geology , anomaly (physics) , satellite , geophysics , geodesy , oceanography , astronomy , physics , condensed matter physics
Summary A satellite magnetic anomaly map of Greenland has been compiled using data from the POGO 2, 4 and 6 satellites. Data from quiet passes have been extracted and processed into an equivalent source representation in the form of a contour map of the satellite magnetic field at an altitude of 500 km. The satellite magnetic anomaly map contains some very pronounced anomalies: A magnetic maximum of 8nT centred in northern Greenland at approximately 79° 30′ N, 37° W, a smaller but also significant maximum over southern Greenland at 61° 30′ N, 44° W, and two minima over the Disko‐Nǔgssuaq area of central West Greenland (70° N, 52° W) and the Scoresby Sund area of central East Greenland (71° N, 24° W), respectively. A qualitative comparison with major geological features shows a good general correlation, although no final conclusions should be drawn from the existing POGO data. The magnetic anomaly map is also compared with the scarce existing geophysical data from this area. Major changes in crustal properties and/or structures are indicated under the Inland Ice across a line connecting the Disko‐NQǔgssuaq area and the Scoresby Sund area.