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Michael Purucker

Towards a global interpretation of the Earth ’ s lithospheric magnetic field: Basin development, rheology, heat flux, tectonics, subduction, igneous processes, and impact. Michael Purucker. SGT at Planetary Geodynamics Lab, Goddard Space Flight Center/NASA, Greenbelt, USA.

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Michael Purucker

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  1. Towards a global interpretation of the Earth’s lithospheric magnetic field: Basin development, rheology, heat flux, tectonics, subduction, igneous processes, and impact Michael Purucker SGT at Planetary Geodynamics Lab, Goddard Space Flight Center/NASA, Greenbelt, USA With thanks to a large cast: R. Blakely, S. Maus, V. Lesur, K. Whaler, T. Sabaka,, and MORE!!!

  2. Outline • Motivation. Objectives of Swarm, CHAMP. Previous work. What do we mean by interpretation? • The maps: MF, CHAOS, POMME, EMAG, WDMAM • The interpretation scheme: Basin development, rheology, heat flux, tectonics, subduction, igneous processes, and impact • 7 examples • How shall we approach the problem globally? • Earth’s magnetic field (2.3) at GFZ: Space and airborne missions, observatories, magnetic hazards program, lithospheric magnetic interpretation Potsdam: 12 Dec 2011

  3. Swarm science objectives Potsdam: 12 Dec 2011

  4. A satellite view Maus et al., 2010 Potsdam: 12 Dec 2011

  5. Integrated satellite and ground view WDMAM Potsdam: 12 Dec 2011

  6. Basin development Siberia Purucker and Whaler, 2006 Potsdam: 12 Dec 2011

  7. Rheology Purucker and Whaler, in preparation Potsdam: 12 Dec 2011

  8. Heat flux Purucker and Fox Maule, 2010 Potsdam: 12 Dec 2011

  9. Tectonics MF-7 Potsdam: 12 Dec 2011

  10. Subduction-1 Purucker and Clark, 2011 Potsdam: 12 Dec 2011

  11. Subduction-2 Purucker and Clark, 2011 Potsdam: 12 Dec 2011

  12. Igneous Processes Western Australia Purucker and Whaler, 2006 Potsdam: 12 Dec 2011

  13. Impact Spray et al. 2004 Purucker and Whaler, 2006 Potsdam: 12 Dec 2011

  14. A global approach to the problem • From longest to shortest wavelength • Interpretation should include all lithospheric processes with magnetic field signatures. • A signature GFZ product, which would engage students, and leading geologists and geophysicists, including GFZ experts outside of geomagnetism. • Would provide academia, and the exploration geophysics community, with a powerful tool to facilitate testing of hypotheses relating to the earth’s crust and lithosphere. Potsdam: 12 Dec 2011

  15. Earth’s magnetic field (2.3) at GFZ • Space and airborne missions • CHAMP, Swarm, HALO, Swarm follow-on, UAVs • Observatories • Automated, virtual, remote sensing of mesospheric fields • Magnetic Hazards program • Space weather, Climate science, neutral wind and density and satellite altitude evolution, large earthquake localization, South Atlantic Anomaly evolution • Lithospheric magnetic interpretation and modeling • Core field modeling and interpretation Potsdam: 12 Dec 2011

  16. Let Swarm begin! Potsdam: 12 Dec 2011

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