Open AccessMerging aeromagnetic data collected at different levels: the GEOMAUD survey
Author(s) -
Detlef Damaske
Publication year - 1999
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-3710
Subject(s) - geology , aeromagnetic survey , magnetic anomaly , contour line , section (typography) , elevation (ballistics) , geophysical survey , magnetic survey , terrain , anomaly (physics) , field survey , geological survey , plateau (mathematics) , geodesy , scale (ratio) , aerial survey , seismology , geophysics , remote sensing , cartography , geography , magnetic field , geometry , mathematical analysis , physics , mathematics , condensed matter physics , quantum mechanics , advertising , business
As part of the German GEOMAUD-expedition an aeromagnetic survey was carried out in Central Queen Maud Land. The helicopter-borne survey was designed in a conventional form of a regional survey with a spacing of profile-lines of 4.4 km. Due to terrain considerations - surveying from the coast across the mountain ranges to the high altitudes of the polar plateau - the survey was split into two sections flown at different constant levels. Over the coastal part survey elevation was 570 m (above sea level) while for the mountain section 2845 m was chosen. Both survey parts were processed separately. The low level section was upward continued before merging with the high level section. Though this leads to a homogeneous magnetic anomaly map, in some applications it may be more advantageous to present the anomalies of the magnetic field in original survey levels as a simple combined map because small scale features are preserved and can be used in recognizing magnetic units and patterns for geological/geophysical interpretation