Date (Creation)

2018-01-26

Date (Revision)

2018-01-26

Date (Publication)

2018-01-26

Date (released)

2018-01-26

Edition

None

Unique resource identifier

https://doi.org/10.5285/6549203d-da8b-4a22-924b-a9e1471ea7f1

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01055

Codespace

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

Other citation details

Please cite this item as: Ferraccioli, F., Corr, H., Jordan, T., Forsberg, R., Matsuoka, K., Diez, A., Olesen, A., Ghidella, M., Zakrajsek, A., Robinson, C., & King, O. (2018). Bed, surface elevation and ice thickness measurements derived from Radar acquired during the ICEGRAV-2013 airborne geophysics campaign (Version None) [Data set]. Polar Data Centre, Natural Environment Research Council, UK. https://doi.org/10.5285/6549203d-da8b-4a22-924b-a9e1471ea7f1

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Ferraccioli, Fausto		Author
British Antarctic Survey	Corr, Hugh		Author
British Antarctic Survey	Jordan, Tom		Author
Norwegian Polar Institute	Matsuoka, Kenichi		Author
Norwegian Polar Institute	Diez, Anja		Author
Technical University of Denmark	Olesen, Arne		Author
Technical University of Denmark	Forsberg, René		Author
Instituto Antártico Argentino	Ghidella, Marta		Author
Instituto Antártico Argentino	Zakrajsek, Andrés		Author
British Antarctic Survey	Robinson, Carl		Author
British Antarctic Survey	King, Owen		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 > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets
• EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Depth/Thickness
• EARTH SCIENCE > Land Surface > Topography > Terrain Elevation

Theme

• East Antarctica

• ICEGRAV

• Ice Thickness

• PASIN

• Radio Echo Sounding (RES)

• Recovery/Slessor/Bailey Region

Place

• Recovery/Slessor/Bailey Region, East Antarctica Antarctica

GEMET - INSPIRE themes, version 1.0

• Elevation
• Meteorological geographical features
• Land cover

Access constraints

Other restrictions

Other constraints

no limitations to public access

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

License

Other constraints

This dataset is supplied under the Open Government Licence v3.0: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

Use constraints

Other restrictions

Other constraints

This data is covered by a UK Open Government Licence ( http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). Further by downloading this data the user acknowledges that they agree with the NERC data policy ( http://www.nerc.ac.uk/research/sites/data/policy.asp), and the following conditions:

1. To cite both the data and literature reference in any publication as follows:

DATA REFERENCE

Ferraccioli, F., Corr, H., Jordan, T.A., Forsberg, R., Matsuoka, K., Diez, A., Olesen, A.V., Ghidella, M., Zakrajsek, A., Robinson, C., King, O. 2018. Bed, surface elevation and ice thickness measurements derived from Radar acquired during the ICEGRAV-2013 airborne geophysics campaign. Polar Data Centre, British Antarctic Survey, NERC, Cambridge, UK. DOI: 10.5285/6549203d-da8b-4a22-924b-a9e1471ea7f1

LITERATURE REFERENCE

Diez A., K. Matsuoka, F. Ferraccioli, T.A. Jordan, H.F.J. Corr, J. Kohler, A. Olesen, and R. Forsberg (2018), Basal settings control fast ice flow in the Recovery/Slessor/Bailey Region, East Antarctica, Geophys. Res. Lett., 45, doi:10.1002/2017GL076601

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

url

Codespace

url

Association Type

dependency

Unique resource identifier

doi

Codespace

doi

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Elevation
• Environment
• Geoscientific information

Begin date

2013-01-04

End date

2013-02-03

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:

For the processing of the data a coherent moving-average filter, commonly referred to as an unfocused SAR, was used. The bed reflector was first automatically picked using the PROMAX software package. All the picks were afterwards checked and corrected by hand if necessary. The picked travel time was then converted to depth using a radar wave speed of 168 m/µs and a constant firn correction of 10 m. Surface elevation measurements were derived from radar altimeter for ground clearance < 750 m, and the PASIN system for higher altitudes.

The data was collected flying at an average flight velocity of 65 m/s. This resulted in approximately10 m alongtrack spacing of radar traces. The radar lines have a spacing of approximately 27 km. The majority of flights are at a constant elevation, required for coincident collection of gravity data.

Channel description:

Basic Channels Name Description

Date UTC date (YYYY/MM/DD)

Time UTC time (HH:MM:SS.SS)

FlightID Sequential flight number and survey ID e.g. W12

Line_name Line Number e.g. LW200.1

Lon Longitude WGS 1984

Lat Latitude WGS 1984

x x projected meters *

y y projected meters *

Height_WGS1984 Aircraft altitude (meters) in WGS 1984

Radar

segy_name Radar_segy file name

TraceNum Radar segy trace number

PriNum Raw radar time

surfPickLoc Location down trace of surface pick

bedPickLoc Location down trace of bed elevation pick

surfElev Surface elevation (m)

bedElev Ice bed elevation (m)

tIce Ice thickness (m)

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

Latitude of false origin: -80

Longitude of false origin: -81

Latitude of 1st standard parallel -82

Latitude of 2nd standard parallel -78

False easting 26501

False northing 1977093

Data collection:

Radar data was collected using the PASIN radar echo sounding system (Corr et al., 2007) using a British Antarctic Survey (BAS) Twin Otter. The radar has a centre frequency of 150 MHz. As signal a 4 microsecond chirp was used with a bandwidth of 10 MHz. The used sampling frequency was 22 MHz.

Metadata

File identifier

6549203d-da8b-4a22-924b-a9e1471ea7f1 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2018-01-26

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