Further by downloading this data the user acknowledges that they agree with the NERC data policy (), and the following conditions:

1. To cite the data in any publication as follows:

Ferraccioli, F., Jones, P., Curtis, M., Leat, P., & Riley, T. (2020). Processed line aeromagnetic data over the Jutulstraumen rift area (2001/02 season) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/0EA3836D-EC6F-4856-B8BA-173C859372BB

2. The user recognizes the limitations of data. Use of the data is at the users' own risk, and there is no warranty as to the quality or accuracy of any data, or the fitness of the data for your intended use. The data are not necessarily fully quality assured and cannot be expected to be free from measurement uncertainty, systematic biases, or errors of interpretation or analysis, and may include inaccuracies in error margins quoted with the data.

Methodology:

MAMOG aeromagnetic data and details of survey design and data processing are presented in (Ferraccioli et al, 2005). The dataset available here includes all channels from raw through to levelled and microlevlled products. Channel naming follows SCAR/ADMAP2 data release protocols.

Magnetic data channels and processing flow:

MagR- Raw magnetic total field intensity data (nT).

MagC- Compensated, or low pass filtered magnetic data (nT). Adjustments to compensate for aircraft roll, pitch and yaw were applied.

RefField- Geomagnetic reference field value for which the magnetic data has been compensated. IGRF model 2000 as implemented in Geosoft (nT).

MagRTC- Compensated magnetic value adjusted for Tip tanks (where used) and geomagnetic reference field values. MagRTC= MagR- RefField (nT).

BCorr- Low pass filtered (30 minute) magnetic base station correction.

MagBRTC- calculated as MagBRTC= MagRTC- Bcor (nT)r.

ACorr- Additional correction applied to compensate for heading errors. Only applied to line and tie line segments with consistent headings.

MagF- Final mag value before levelling (nT).

MagL- Statistically levelled mag data (nT).

MagML- Microlevelled magnetic data following technique of (Ferraccioli et al., 1998) (nT). Note tie lines are not included in the microlevelled data channel.

Basic channel description:

Line name Line Number

Flight ID Sequential flight number

x x projected meters*

y y projected meters*

Lon Longitude WGS 1984,

Lat Latitude WGS 1984,

Height_WGS1984 Aircraft altitude (meters) in WGS 1984,

Date Date of flight in time format e.g. 2006/01/08

Time Time (UTC) of flight e.g. 23:52:42.0

*Projected coordinates (x and y) are in Lambert conic conformal with two standard parallels defined as follows:

Latitude of natural origin: -71

Longitude of natural origin: 0

Scale factor at natural origin -75.33333333333

False easting 0

False northing 2082760.109

Data quality:

Tcorr and Scorr have no values.