Date (Creation)

2021-05-05

Date (Revision)

2021-05-05

Date (Publication)

2021-05-05

Date (released)

2021-05-05

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/ba1caf7a-d4e0-4671-972a-e567a25ccd2c

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01495

Codespace

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

Unique resource identifier

NE/S006788/1

Codespace

award

Other citation details

Please cite this item as: Young, T., & Dawson, E. (2021). Quad-polarimetric ApRES measurements along a 6 km-long transect at the WAIS Divide, December 2019 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/ba1caf7a-d4e0-4671-972a-e567a25ccd2c

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Scott Polar Research Institute, University of Cambridge	Young, Tun Jan		Author
Stanford University	Dawson, Eliza		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 Motion/Ice Sheet Motion
• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
• EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion
• EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography
• EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets
• EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets
• EARTH SCIENCE > Spectral/Engineering > Radar

Theme

• ApRES

• ITGC

• anisotropy

• fabric

• radar

• radar polarimetry

Place

• West Antarctic Ice Sheet Divide Antarctica

GEMET - INSPIRE themes, version 1.0

• Elevation
• Hydrography

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

Data supplied under Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

No restrictions apply.

Unique resource identifier

url

Codespace

url

Association Type

Larger work citation

Unique resource identifier

url

Codespace

url

Association Type

dependency

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Unique resource identifier

doi

Codespace

doi

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

Begin date

2019-12-25

End date

2019-12-26

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 each site, a suite of four quadrature (quad-) polarimetric measurements were collected using an autonomous phase-sensitive radio echo sounder (ApRES) in a single-input single-output configuration. Each measurement consisted of 100 chirps, with each chirp consisting of a linear sweep from 200 to 400 MHz over the course of 1 second, corresponding to a centre frequency of 300 MHz over a bandwidth of 200 MHz. For each measurement, two open-structure antennas (1 transmitting, 1 receiving) were positioned with their centres 8.00 m apart in combinations of four orthogonal antenna orientations, where antennas were positioned in either a horizontal (h) or vertical (v) alignment with respect to the antenna's electric plane. The four orientation combinations are therefore hh, hv, vv, and vh. Measurements were conducted sequentially, and each antenna pair orientation was established by rotating one or both antennas by 90° with respect to their previous orientations while keeping the position of each antenna centre constant. The antenna plane (parallel to the h orientation; 110°) was oriented perpendicular to the transect line (20°). The complete data collection period at each site, from the start of setup to the conclusion of packing, was ~30 minutes.

Data collection:

Data collection: SISO autonomous phase-sensitive radio-echo sounder (version dated to 20170925) with 2x open-structure ("skeleton-slot") antennas.

Data analysis and processing: MATLAB.

Data quality:

The coarse-range (amplitude-derived) vertical (depth) resolution of the ApRES is 0.54 m. The azimuthal accuracy is unknown and is mainly the result of human error in alignment of antennas. A nominal azimuthal error of ±8° is assigned. The data included in this dataset are raw data and are entirely unprocessed.

Metadata

File identifier

ba1caf7a-d4e0-4671-972a-e567a25ccd2c XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2021-05-05

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