Ice surface, ice base and lake bed elevation data from seismic data acquired over Subglacial Lake Ellsworth 2007-08

Point data measurements of ice surface, ice base and lake bed elevation are given from Subglacial Lake Ellsworth (SLE), West Antarctica. The data were acquired during the austral summer of 2007-2008. Five seismic reflection lines were acquired over SLE, with surface elevation determined by dual frequency GPS.

Funding was provided by NERC AFI, award numbers NE/D009200/1, NE/D008638/1 and NE/D008751/1. Logistics support: British Antarctic Survey. Equipment support: NERC Geophysical Equipment Facility (loan numbers 838 and 870).

Alternate title: Polar Data Centre (PDC) record GB/NERC/BAS/PDC/01330

Date (Publication): 2020-05-11

Citation identifier: http://www.antarctica.ac.uk/dms/metadata.php?id= / GB/NERC/BAS/PDC/01330

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey		pdc@bas.ac.uk	Custodian
UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation	Smith, A., Woodward, J., & Ross, N.	pdc@bas.ac.uk	Originator

Maintenance and update frequency: Unknown

Keywords

NDGO0001

NERC OAI Harvesting

NERC_DDC

GCMD Parameter Valids

EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets
EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation
EARTH SCIENCE > Land Surface > Topography > Terrain Elevation

BAS Free-text keywords

Subglacial Lake Ellsworth
West Antarctica
lake-bed elevation
seismic

Use limitation: These data are governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Access constraints: Other restrictions

Other constraints: These data are governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Distance: 0.00001 degree

Language: English

Topic category

Elevation
Environment
Geoscientific information

Begin date: 2007-11-01

End date: 2008-02-29

Reference system identifier: OGP / urn:ogc:def:crs:EPSG::4326

Distribution format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Polar Data Centre - British Antarctic Survey		pdc@bas.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
http		GET DATA

Hierarchy level: Dataset

Domain consistency

Measure identification: INSPIRE / Conformity_001

Conformance result

Title: INSPIRE Data Specification on unknown theme Guidelines

Date

Explanation: See the referenced specification

Pass: No

Statement: Data quality are good; the ice-water interface can be clearly picked on virtually all traces, the water-bed interface can be picked in most places, except close to the lake shoreline and at a few other locations on each line. Only the results from traces where both reflections can be picked are provided. Nominal point spacing is 5 m, with occasional gaps at the locations where both reflections could not be picked. Absolute errors in ice- and water-column thickness are 10 m and 1.5 m respectively, although relative thicknesses changes (trace-to-trace) are more precise. See publications for full details.