Date (Creation)

2020-06-29

Date (Revision)

2020-06-29

Date (Publication)

2020-06-29

Date (released)

2020-06-29

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/414520dd-26ee-4994-b068-fb4e0f1117b1

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01354

Codespace

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

Other citation details

Please cite this item as: Ferris, J. (2020). Processed line aeromagnetic data over the Larsen Ice Shelf (1998) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/414520dd-26ee-4994-b068-fb4e0f1117b1

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Ferris, Julie		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 > Solid Earth > Geomagnetism > Magnetic Anomalies
• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets

Theme

• Aerogeophysics

• Aeromagnetics

• Antarctica

Place

• Larsen Ice Shelf Antarctica

GEMET - INSPIRE themes, version 1.0

• Geology
• Elevation

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:

Ferris, J. (2020). Processed line aeromagnetic data over the Larsen Ice Shelf (1998) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/414520DD-26EE-4994-B068-FB4E0F1117B1

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

Cross reference

Unique resource identifier

doi

Codespace

doi

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Geoscientific information

Begin date

1998-01-01

End date

1998-12-31

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 dataset available here includes all channels from raw through to levelled, and microlevelled products. Channel naming follows SCAR/ADMAP2 data release protocols, although the order of processing steps differs from that outlined by ADMAP2 documentation.

Magnetic data channels and processing flow:

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

MagC- Raw magnetic data corrected/cleaned for obvious tip tank events or anomalous spikes.

TCorr- Tiptank corrections (nT). These include DC shifts and gradients due to aircraft noice, etc. Dummy values if not applicable.

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 and the geomagnetic reference field.

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

MagBRTC- calculated as MagBRTC= MagBTC- RefField.

SCorr- Any DC shift applied.

ACorr- MagRT filtered using a low pass filter with a cut-off length of 15 fiducials to account for noise introduced by aircraft roll, pitch and yaw.

MagF- Final mag value before levelling.

MagL- Statistically levelled mag data.

MagML- Microlevelled magnetic data following technique of (Ferraccioli et al., 1998). 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: -64

Longitude of false origin: -70

Latitude of 1st standard parallel -76.4

Latitude of 2nd standard parallel -63.4

False easting 0

False northing 0

Data quality:

Exact date of acquisition is not known. Survey flown in the 97-98 season.

Values of height are incorrect

Metadata

File identifier

414520dd-26ee-4994-b068-fb4e0f1117b1 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2020-06-29

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