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SWARM+ 4D DEEP EARTH: CORE project

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) (FR)

Summary

The goal of the 4D-Earth-Swarm project, supported by ESA, is to improve our understanding of the rapid (interannual) changes in the geomagnetic field, as recorded by the three satellites of the Swarm mission of ESA – as well as earlier satellite missions such as CHAMP and Oersted, and ground-based observatories. The project is planned for 2.5 years, starting in Sept. 2019. It gathers partners from 5 institutes (ISTerre Grenoble; ETH Zurich; Leeds University; IPG Paris, DTU Copenhagen). It involves in particular

  • formatting of geomagnetic records, and their cleaning from external (magnetospheric and ionospheric) sources;
  • numerical simulations of the geodynamo at extreme parameters;
  • modeling of rapid field changes by means of reduced quasi-geostrophic equations;
  • re-analysis of magnetic changes with a stochastic data assimilation algorithm;
  • a specific analysis of the topographic coupling between the core and the mantle;
  • a focus on high latitude jets and the physics on the cylinder tangent to the inner core and aligned with the Earth’s rotation axis.

Related News

  • A new type of magnetic wave unveiled by Swarm
    May 24, 2022

    Combining satellite measurements from Swarm, as well as from the earlier German Champ mission and Danish Ørsted mission, with a computer model of the geodynamo, a new type of magnetic wave, with a 7 year period, and a westward drift at phase speed of 1500km/year, has been mapped at the Earth’s core-mantle boundary. Such Magneto-Coriolis …

    Read more

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Scientific Papers

Information

Website
https://4d-earth-swarm.univ-grenoble-alpes.fr/
Domain
Science
Prime contractor
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) (FR)
Subcontractors
  • EIDGENÖSSISCHE TECHNISCHE HOCHSCHULE ZURICH (ETH ZURICH) (CH)
  • INST PHYSIQUE GLOBE (FR)
  • OBSERVATOIRE ROYAL DE BELGIQUE (BE)
  • Technical University of Denmark (DK)
  • UNIVERSITY OF LEEDS, SCHOOL OF EARTH AND ENVIRONMENT (GB)
ionosphere and magnetosphere science solid earth swarm

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