The Earth's magnetic field strength during neoproterozoic times

• Grant number: 13/08862-1
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: October 01, 2013
• End date: December 31, 2013
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal Investigator: Ricardo Ivan Ferreira da Trindade
• Grantee: Ricardo Ivan Ferreira da Trindade
• Visiting researcher: Melina Macouin
• Visiting researcher institution: Géosciences Environnement Tolouse (GET), France
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Variations in the intensity of the geomagnetic field are connected to the working mechanisms of the geodynamo in the Earth's core. The history of these variations can provide information on the onset of the solid inner core growth and the fundamental mechanisms controlling the stability of the Earth' field. But information on the Precambrian Earth Field are very scarce due in part to the strong experimental challenges in measuring paleointensity in these very ancient rocks using the classical Thellier protocol. R. Trindade (USP) and M. Macouin (GET-Toulouse) have been co-workers for the past 5 years. They have also independently developed new measurement techniques for the paleointensity study of Precambrian rocks. This 3-months visit is intended to intensify the collaboration between the French and Brazilian groups in a theme of common interest to both laboratories. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MACOUIN, MELINA; ROQUES, DAMIEN; ROUSSE, SONIA; GANNE, JEROME; DENELE, YOANN; TRINDADE, RICARDO I. F.. Is the Neoproterozoic oxygen burst a supercontinent legacy?. Frontiers in Earth Science, v. 3, 2015. (13/08862-1)