Citation:

PANGAEA.963555

Name: Ice Thickness from downstream of the EastGRIP ice core site, North East Greenland Ice Stream, recorded with the airborne AWI UWB radar system
Published: 2023-11-20
License: https://creativecommons.org/licenses/by/4.0/
Keywords: AWI UWB; ice thickness; North East Greenland Ice Stream (NEGIS); radio echo-sounding

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Abstract:

This project aims to acquire airborne data with AWI's UWB (ultrawideband) ice-penetrating radar to extend the knowledge of detailed subglacial topography downstream of the EastGRIP ice core site, following on from a previous UWB radar survey in 2018. The ice thickness data also opportunistically includes profiles that were flown in different survey modes, both upstream and surrounding EastGRIP. The majority of profiles are oriented parallel or perpendicular to ice flow direction.

Keyword(s):

AWI UWB; ice thickness; North East Greenland Ice Stream (NEGIS); radio echo-sounding

Project(s):

East Greenland Ice-core Project (EGRIP)

Coverage:

Median Latitude: 75.868429 * Median Longitude: -34.809108 * South-bound Latitude: 74.000809 * West-bound Longitude: -40.652985 * North-bound Latitude: 77.524475 * East-bound Longitude: -28.105902

Date/Time Start: 2022-06-03T13:14:05 * Date/Time End: 2022-06-16T20:11:23

Event(s):

P5_233_NEGIS_2022_2206030202 * Latitude Start: 75.635029 * Longitude Start: -35.988516 * Latitude End: 75.635261 * Longitude End: -35.987156 * Date/Time Start: 2022-06-03T13:14:05 * Date/Time End: 2022-06-03T16:18:03 * Location: Arctic * Campaign: (NEGIS-FLOW, NEGIS-ANISO, NEGIS Folds) * Basis: POLAR 5 * Method/Device: Aircraft (AC)

P5_233_NEGIS_2022_2206070301 * Latitude Start: 75.635047 * Longitude Start: -35.988611 * Latitude End: 75.635306 * Longitude End: -35.986977 * Date/Time Start: 2022-06-07T12:08:21 * Date/Time End: 2022-06-07T16:47:21 * Location: Arctic * Campaign: (NEGIS-FLOW, NEGIS-ANISO, NEGIS Folds) * Basis: POLAR 5 * Method/Device: Aircraft (AC)

P5_233_NEGIS_2022_2206080401 * Latitude Start: 75.635148 * Longitude Start: -35.988023 * Latitude End: 75.635167 * Longitude End: -35.987728 * Date/Time Start: 2022-06-08T11:22:53 * Date/Time End: 2022-06-08T16:49:51 * Location: Arctic * Campaign: (NEGIS-FLOW, NEGIS-ANISO, NEGIS Folds) * Basis: POLAR 5 * Method/Device: Aircraft (AC)

Comment:

AWI Flight Campaign: P5-233_NEGIS_2022

Project: EGRIP-NOR-2022

Region: Greenland, North East Greenland Ice Stream

Owner / PI: Olaf Eisen (AWI)

Email address of the provider:

olaf.eisen@awi.de

charlotte.carter@awi.de

Instrument used: AWI UWB (MCorRDS 5)

Firn correction: None applied

Velocity profile: dielectric constant of 3.15 ( c = 1.68914e8 m/s )

Ice thickness uncertainty:

Calculated as the RMS of the the sum of the crossover mean of 3639 intersections (12.23 m)

and the error of the dielectric constant (1%).

sqrt( (crossover_mean)^2 + ( (-ice_thickness/2) * 0.01 )^2 )

Method of navigation : GPS data was acquired by four NovAtel DL-V3 GPS receivers operating at 20Hz

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Date/Time of event	Date/Time
3	Profile ID	Profile ID		Carter, Charlotte		IDParadigm
4	Profile ID	Profile ID		Carter, Charlotte		IDCReSIS
5	Trace Number	Trace		Carter, Charlotte
6	LONGITUDE	Longitude		Carter, Charlotte		Geocode
7	LATITUDE	Latitude		Carter, Charlotte		Geocode
8	Two-way traveltime	TWT	ns	Carter, Charlotte	Ultra-wideband radar (UWB), MCoRDS 5	TWT of the bed pick
9	Two-way traveltime	TWT	ns	Carter, Charlotte	Ultra-wideband radar (UWB), MCoRDS 5	TWT of the surface pick
10	Two-way traveltime	TWT	ns	Carter, Charlotte	Ultra-wideband radar (UWB), MCoRDS 5	IceThicknessTWT = BedTWT - SurfaceTWT
11	Ice thickness	Ice thick	m	Carter, Charlotte	Ultra-wideband radar (UWB), MCoRDS 5	Derived from IceThicknessTWT and the constant velocity profile
12	Ice thickness, uncertainty	Ice thick unc	±	Carter, Charlotte	Ultra-wideband radar (UWB), MCoRDS 5
13	Time in seconds	Time	s	Carter, Charlotte	Ultra-wideband radar (UWB), MCoRDS 5	seconds of day in UTC

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

4228281 data points

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