Merging aeromagnetic data collected at different levels: the GEOMAUD survey
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...
Published in: | Annals of Geophysics |
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Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
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Istituto Nazionale di Geofisica e Vulcanologia, INGV
1999
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Subjects: | |
Online Access: | https://www.annalsofgeophysics.eu/index.php/annals/article/view/3710 https://doi.org/10.4401/ag-3710 |
Summary: | 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. |
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