New Antarctic Gravity Anomaly Grid for Enhanced Geodetic and Geophysical Studies in Antarctica

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • M. Scheinert - , Chair of Geodetic Earth System Research (Author)
  • F. Ferraccioli - , British Antarctic Survey (Author)
  • R. Bell - , Columbia University (Author)
  • M. Studinger - , NASA Goddard Space Flight Center (Author)
  • D. Damaske - , Bundesanstalt für Geowissenschaften und Rohstoffe, Hannover, Germany (Author)
  • W. Jokat - , Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research (Author)
  • N. Aleshkova - , VNIIOkeangeologia, Saint Petersburg, Russia (Author)
  • T. Jordan - , British Antarctic Survey (Author)
  • G. Leitchenkov - , VNIIOkeangeologia, Saint Petersburg, Russia, Peter the Great St. Petersburg Polytechnic University (Author)
  • D.D. Blankenship - , University of Texas at Austin (Author)
  • T.M. Damiani - , United States Geological Survey (Author)
  • D. Young - , University of Texas at Austin (Author)
  • J.R. Cochran - , Columbia University (Author)
  • T.D. Richter - , University of Texas at Austin (Author)
  • J. Schwabe - , Chair of Geodetic Earth System Research, Federal Agency for Cartography and Geodesy (Author)

Abstract

Gravity surveying is challenging in Antarctica because of its hostile environment and inaccessibility. Nevertheless, many ground-based, airborne, and shipborne gravity campaigns have been completed by the geophysical and geodetic communities since the 1980s. We present the first modern Antarctic-wide gravity data compilation derived from 13 million data points covering an area of 10 million km2, which corresponds to 73% coverage of the continent. The remove-compute-restore technique was applied for gridding, which facilitated leveling of the different gravity data sets with respect to an Earth gravity model derived from satellite data alone. The resulting free-air and Bouguer gravity anomaly grids of 10 km resolution are publicly available. These grids will enable new high-resolution combined Earth gravity models to be derived and represent a major step forward toward solving the geodetic polar data gap problem. They provide a new tool to investigate continental-scale lithospheric structure and geological evolution of Antarctica.

Details

Original languageEnglish
Pages (from-to)600– 610
JournalGeophysical Research Letters
Volume43
Issue number2
Publication statusPublished - 8 Jan 2016
Peer-reviewedYes

External IDs

Scopus 84961285711
ORCID /0000-0002-0892-8941/work/142248878

Keywords

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Subject groups, research areas, subject areas according to Destatis

ASJC Scopus subject areas

Keywords

  • Geodäsie