Citation:

PANGAEA.911868

Name: Ice thickness from the coast of Dronning Maud Land (Antarctica), recorded 2018/19 with the AWI UWB radar system
Published: 2020-02-10
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctica; AWI UWB; Dronning Maud Land; ice rise; Ice shelf; ice thickness; radio-echo sounding

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Abstract:

Ice thickness from the coast of Dronning Maud Land (Antarctica), recorded 2018/19 with the AWI UWB radar system

This project aims to acquire airborne data with AWI's UWB (ultrawideband) radar to investigate important aspects which define the dynamics of the sheet-shelf system in DML, Antarctica. This includes several ice rises, which serve as breaks for unhindered ice-shelf flow as well as a particular site just upstream of the grounding line, where strong interaction between a sediment-carrying, subglacial hydrological network, the ocean and the ice sheet are suspected. The data will lay the ground to constrain estimates of past ice flow and to understand stabilizing/destabilizing mechanisms in the most critical zone around Antarctica.

The radar lines collected for this survey were mainly flown over ice shelves and ice rises, covering areas with an ice thickness ranging from several hundreds to about 1000 m.

AWI Flight Campaign: P6-215_UWB_2018

Region: Coastal Dronning Maud Land

Owner/PI: Reinhard Drews (University of Tübingen, GER)

Contact of the data provider: daniela.jansen@awi.de

Instrument used: AWI UWB (MCoRDS 5)

Firn correction: none applied

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

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

Ice Thickness uncertainty is the RMS of the the sum of the crossover mean of 29intersections (= 11.2 m) and the error of the dielectric (1%). sqrt( (crossover_mean)^2 + ( (-ice_thickness/2) * 0.01 )^2 )

Keyword(s):

Antarctica; AWI UWB; Dronning Maud Land; ice rise; Ice shelf; ice thickness; radio-echo sounding

Coverage:

Median Latitude: -70.754721 * Median Longitude: 20.287573 * South-bound Latitude: -71.824303 * West-bound Longitude: -3.123991 * North-bound Latitude: -70.061394 * East-bound Longitude: 28.052961

Date/Time Start: 2018-12-31T10:45:17 * Date/Time End: 2019-01-07T11:20:08

Minimum POINT DISTANCE from start: 0.00 m * Maximum POINT DISTANCE from start: 91179.00 m

Event(s):

P6_215_UWB_2018_1812311001 * Latitude Start: -71.955520 * Longitude Start: 2.472661 * Latitude End: -71.955501 * Longitude End: 2.472704 * Date/Time Start: 2018-12-31T09:54:35 * Date/Time End: 2018-12-31T13:09:34 * Campaign: (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)

P6_215_UWB_2018_1901061201 * Latitude Start: -71.949299 * Longitude Start: 23.299943 * Latitude End: -71.949296 * Longitude End: 23.299577 * Date/Time Start: 2019-01-06T08:33:59 * Date/Time End: 2019-01-06T12:10:58 * Campaign: (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)

P6_215_UWB_2018_1901061302 * Latitude Start: -71.949300 * Longitude Start: 23.299570 * Latitude End: -71.949295 * Longitude End: 23.299957 * Date/Time Start: 2019-01-06T13:05:47 * Date/Time End: 2019-01-06T16:26:47 * Campaign: (JuRaS, CHIRP) * Basis: POLAR 6 * Method/Device: Aircraft (AC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Drews, Reinhard
2	DATE/TIME	Date/Time		Drews, Reinhard		Geocode – UTC
3	Flight number	Flight		Drews, Reinhard
4	Profile	Profile		Drews, Reinhard		Profile ID in the AWI UWB system
5	Profile	Profile		Drews, Reinhard		Profile ID in the ECHOS/Paradigm system
6	Number	No		Drews, Reinhard		Trace number in a profile
7	LONGITUDE	Longitude		Drews, Reinhard		Geocode
8	LATITUDE	Latitude		Drews, Reinhard		Geocode
9	Two-way traveltime	TWT	ns	Drews, Reinhard
10	Ice thickness	Ice thick	m	Drews, Reinhard	Ice Thickness Radar (EMR, MCoRDS)
11	Ice thickness, uncertainty	Ice thick unc	±	Drews, Reinhard	Ice Thickness Radar (EMR, MCoRDS)
12	POINT DISTANCE from start	Dist	m	Drews, Reinhard		Geocode – along-track distance of a profile

License:

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

Size:

911344 data points

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