BARENTS SEA AEROMAGNETIC REMAPPING (BASAR-14)

The Geological Survey of Norway (NGU) has carried out a new acquisition of aeromagnetic data in the South-eastern Barents Sea in order to determine the first or-der 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 spac-ings 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.

The new BASAR-14 survey constitutes a part of an aeromagnetic remapping programme of the Norwe-gian continental shelf and adjacent ocean areas. Com-bined 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 aero-magnetic data-set of the Southeastern Barents Sea.

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.

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Maps

• Aeromagnetic total field data-sets

• Depth to magnetic sources

• Free air, Bouguer gravity maps

• Filtered magnetic gravity maps

• Combined interpretation maps

• Magnetic modelling along key transects

• 3D potential field modelling*

• Geodynamic interpretation

Reports

• Processing report

• Interpretation report

DELIVERABLES

TECHNICAL SPECIFICATIONS

Line/tie-line spacing: 2/6 km

Line/tie-line spacing: 2 km / 5 km 1 km / 5 km for 3D seismic areas

Sensor elevation: approx. 230 m

Total area coverage: ~46,000 km2

Total flying distance: ~44,000 km

Aeroplanes: Piper Chieftain

Magnetometer: Scintrex Cesium Vapour

Noise envelope: ±0.1 nT

Sensor: CS-3 mounted in towed bird

Outline of the aeromagnetic survey BASAR-2014 in the southeastern Barents Sea with 3D seismic areas covered with denser line spacing

LAURENT GERNIGON Senior Researcher, Continental Shelf Geophysics

laurent.gernigon@ngu.no Tel: +47 73 90 44 37

MORE INFORMATION?ORDERING:

Price

1,164,000 NOK

(*)Optional; requires access to the NPD seismic survey of the Southeastern Barents Sea

NGU - GEOLOGICAL SURVEY OF NORWAY

CONTACT ADDRESS

PO Box 6315 Sluppen NO-7491 Trondheim Phone: +47 73 90 40 00

VISITING ADRESS

Leiv Eirikssons vei 39, TrondheimE-mail: ngu@ngu.nowww.ngu.no/continental_shelf_geophysics

SOCIAL MEDIA

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MARCO BRÖNNER Senior Researcher, Continental Shelf Geophysics

marco.bronner@ngu.no Tel: +47 73 90 44 75

SPONSORS

NGU, NPD, Det norske, Eni, Statoil, Total