FOCUS NGU FOCUS NO.6 APRIL 2015
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BARENTS SEA AEROMAGNETIC REMAPPING (BASAR-14)
The Geological Survey of Norway (NGU) has carried out a new acquisition of aeromagnetic data in the Southeastern Barents Sea in order to determine the first order geological features. The survey comprises an area of approx. 46,000 km² in the Southeastern Barents Sea between the Fedynsky High and the Nordkapp Basin (see map on the next page). Profile and tie line spacings of the survey are 2 km and 5 km, respectively. The data acquisition was accomplished in October 2014. For the 3D seismic areas additional acquisition with denser profile distance of 1 km will be carried out in April/ May 2015.
Aeromagnetic surveys are useful for detailed mapping of salt features, fracture systems, magmatic intrusions and to estimate the depth to magnetic basement. This information provides a structural overview of the area and is valuable for further survey planning like seismic, gravity, MT or CSEM data acquisition.
The new BASAR-14 survey constitutes a part of an aeromagnetic remapping programme of the Norwegian continental shelf and adjacent ocean areas. Combined with previous NGU’s BASAR surveys (BAS-06, BASAR-08 and BASAR-09) the planned acquisition will provide a comprehensive and state-of-the-art aeromagnetic data-set of the Southeastern Barents Sea.
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