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Exploring the Recovery Lakes region and interior Dronning Maud Land, East Antarctica, with airborne gravity, magnetic and radar measurements

Rene Forsberg, Arne V. Olesen, Fausto Ferraccioli, Thomas H. Jordan, Kenichi Matsuoka, Andres Zakrajsek, Marta Ghidella and Jamin S. Greenbaum
Exploring the Recovery Lakes region and interior Dronning Maud Land, East Antarctica, with airborne gravity, magnetic and radar measurements (in Exploration of subsurface Antarctica; uncovering past changes and modern processes, Martin J. Siegert (editor), Stewart S. R. Jamieson (editor) and D. A. White (editor))
Special Publication - Geological Society of London (September 2017) 461 (1): 23-34

Abstract

Long-range airborne geophysical measurements were carried out in the ICEGRAV campaigns, covering hitherto unexplored parts of interior East Antarctica and part of the Antarctic Peninsula. The airborne surveys provided a regional coverage of gravity, magnetic and ice-penetrating radar measurements for major Dronning Maud Land ice stream systems, from the grounding lines up to the Recovery Lakes drainage basin, and filled in major data voids in Antarctic data compilations, such as AntGP for gravity data, ADMAP for magnetic data and BEDMAP2 for ice thickness data and the sub-ice topography. We present the first maps of gravity, magnetic and ice thickness data and bedrock topography for the region and show examples of bedrock topography and basal reflectivity patterns. The 2013 Recovery Lakes campaign was carried out with a British Antarctic Survey Twin Otter aircraft operating from the Halley and Belgrano II stations, as well as a remote field camp located at the Recovery subglacial Lake B site. Gravity measurements were the primary driver for the survey, with two airborne gravimeters (Lacoste and Romberg and Chekan-AM) providing measurements at an accuracy level of around 2 mGal r.m.s., supplementing GOCE (Gravity Field and Steady-State Ocean Circulation Explorer) satellite data and confirming an excellent sub-milligal agreement between satellite and airborne data at longer wavelengths.


ISSN: 0305-8719
EISSN: 2041-4927
Coden: GSLSBW
Serial Title: Special Publication - Geological Society of London
Serial Volume: 461
Serial Issue: 1
Title: Exploring the Recovery Lakes region and interior Dronning Maud Land, East Antarctica, with airborne gravity, magnetic and radar measurements
Title: Exploration of subsurface Antarctica; uncovering past changes and modern processes
Author(s): Forsberg, ReneOlesen, Arne V.Ferraccioli, FaustoJordan, Thomas H.Matsuoka, KenichiZakrajsek, AndresGhidella, MartaGreenbaum, Jamin S.
Author(s): Siegert, Martin J.editor
Author(s): Jamieson, Stewart S. R.editor
Author(s): White, D. A.editor
Affiliation: Technical University of Denmark, National Space Institute, Lyngby, Denmark
Pages: 23-34
Published: 20170920
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 30
Accession Number: 2017-082784
Categories: Applied geophysicsQuaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, sects.
S81°10'00" - S81°10'00", W28°00'00" - W28°00'00"
Secondary Affiliation: British Antarctic Survey, GBR, United KingdomNorwegian Polar Institute, NOR, NorwayInstituto Antartico Argentino, ARG, ArgentinaUniversity of Texas at Austin, USA, United States
Source Note: Online First
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201743
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