Date (Creation)

2020-02-27

Date (Revision)

2020-02-27

Date (Publication)

2020-02-27

Date (released)

2020-02-27

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/91df43df-e3fd-4637-9091-e75f623e2b07

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01308

Codespace

https://data.bas.ac.uk/

Other citation details

Please cite this item as: Ferraccioli, F., Damaske, D., Finn, C., Bell, R., Jordan, T., Robinson, C., & Frearson, N. (2020). Antarctica's Gamburtsev Province (AGAP) Project - Aeromagnetic data (2007-2009) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/91df43df-e3fd-4637-9091-e75f623e2b07

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Ferraccioli, Fausto		Author
Bundesanstalt fur Geowissenschaften und Rohstoffe	Damaske, Detlef		Author
US Geological Survey	Finn, Carol		Author
Lamont-Doherty Earth Observatory, Columbia University	Bell, Robin		Author
British Antarctic Survey	Jordan, Tom		Author
British Antarctic Survey	Robinson, Carl		Author
British Antarctic Survey	Frearson, Nicholas		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Land Surface > Topography > Topographical Relief
• EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Anomalies

Theme

• Gamburtsev Province

• aerogeophysics

• magnetics

Place

• Gamburtsev Province Antarctica

GEMET - INSPIRE themes, version 1.0

• Land cover
• Geology

Access constraints

Other restrictions

Other constraints

no limitations to public access

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

License

Other constraints

Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

Use constraints

Other restrictions

Other constraints

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., Damaske, D., Finn, C., Bell, R., Jordan, T., Robinson, C., & Frearson, N. (2020). Antarctica's Gamburtsev Province (AGAP) Project - Aeromagnetic data (2007-2009) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/91DF43DF-E3FD-4637-9091-E75F623E2B07

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.

Unique resource identifier

url

Codespace

url

Association Type

Larger work citation

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Geoscientific information
• Imagery base maps earth cover

Begin date

2008-11-01

End date

2009-04-30

Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

The aeromagnetic system used was manufactured by Scintrex/PicoEnvirotec and has also extensively been used in Antarctica before. Aeromagnetic data was collected using two optically pumped Scintrex Cs-3 sensors which were fitted in pods and mounted in wing-tip configuration on the Twin Otter. A fluxgate magnetometer provided the data to compensate for the magnetic effect of the aircraft and a magnetic base station was deployed to monitor external magnetic field variations. In total, 120,000 line km of data were acquired from a nested survey grid with line spacing of 5km and tie lines ~ 33 km apart.

AGAP aeromagnetic data presented in Ferraccioli et al. (2011). The dataset available here includes all channels from raw through to levelled, and draped 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 (see Ferraccioli et al, 2007 for details).

RefField- Geomagnetic reference field value for which the magnetic data has been compensated. IGRF model 2005 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 (60 minute) magnetic base station correction. Data from three base stations were used for different portions of the survey (BCorr_AGAP_N, BCorr_AGAP_S, BCorr_AGAP_SP), along with a merged value between North and South base stations (BCorr_AGAP_NS).

MagBRTC- calculated as MagBRTC= MagRTC- Bcorr (nT).

ACorr- Additional correction applied to compensate for heading errors.

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 false origin: -80

Longitude of false origin: 80

Latitude of 1st standard parallel -83

Latitude of 2nd standard parallel -77

False easting 2000000

False northing 2000000

Data quality:

The accuracy of the processed data is approximately 1 nT.

Metadata

File identifier

91df43df-e3fd-4637-9091-e75f623e2b07 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2020-02-27

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact