GEOMAGIA50.v3: 1. general structure and modifications to the archeological and volcanic database Recent advances in environmental magnetism and paleomagnetism

Research output: Contribution to journalArticle


Background: GEOMAGIA50.v3 is a comprehensive online database providing access to published paleomagnetic, rock magnetic, and chronological data from a variety of materials that record Earth's magnetic field over the past 50 ka. Findings: Since its original release in 2006, the structure and function of the database have been updated and a significant number of data have been added. Notable modifications are the following: (1) the inclusion of additional intensity, directional and metadata from archeological and volcanic materials and an improved documentation of radiocarbon dates; (2) a new data model to accommodate paleomagnetic, rock magnetic, and chronological data from lake and marine sediments; (3) a refinement of the geographic constraints in the archeomagnetic/volcanic query allowing selection of particular locations; (4) more flexible methodological and statistical constraints in the archeomagnetic/volcanic query; (5) the calculation of predictions of the Holocene geomagnetic field from a series of time varying global field models; (6) searchable reference lists; and (7) an updated web interface. This paper describes general modifications to the database and specific aspects of the archeomagnetic and volcanic database. The reader is referred to a companion publication for a description of the sediment database. Conclusions: The archeomagnetic and volcanic part of GEOMAGIA50.v3 currently contains 14,645 data (declination, inclination, and paleointensity) from 461 studies published between 1959 and 2014. We review the paleomagnetic methods used to obtain these data and discuss applications of the data within the database. The database continues to expand as legacy data are added and new studies published. The web-based interface can be found at


  • Maxwell C. Brown
  • Fabio Donadini
  • Monika Korte
  • Andreas Nilsson
  • Kimmo Korhonen
  • Alexandra Lodge
  • Stacey N. Lengyel
  • Catherine G. Constable
External organisations
  • GFZ German Research Centre for Geosciences
  • University of Fribourg
  • University of Liverpool
  • Geological Survey of Finland
  • Illinois State Museum
  • University of California, San Diego
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Geophysics
  • Geology


  • Archeomagnetism, Database, GEOMAGIA50, Geomagnetism, Paleomagnetism
Original languageEnglish
Article number83
JournalEarth, Planets and Space
Issue number1
Publication statusPublished - 2015 Dec 15
Publication categoryResearch