Expected Magnetic Signature of Demagnetized Impact Craters to Time the Dynamo Shutdown on Mars

B. Langlais (1) , E. Thébault (2) , Y. Quesnel (3) , C. Sotin (1) , François Leblanc (4)

1 LPGN - Laboratoire de Planétologie et Géodynamique de Nantes [UMR 6112]
2 IPGP - Institut de Physique du Globe de Paris
3 GFZ - German Research Centre for Geosciences - Helmholtz-Centre Potsdam
4 SA - Service d'aéronomie

Large impact craters modified the properties of the magnetized lithosphere on Mars. A 100-km wide crater will have a 1 nT signature at 100-km altitude. This allows correlation between weakly magnetized areas and craters to be studied, which should better

Domaines: Planète et Univers [physics]

B. Langlais, E. Thébault, Y. Quesnel, C. Sotin, François Leblanc. Expected Magnetic Signature of Demagnetized Impact Craters to Time the Dynamo Shutdown on Mars. European Mars Science and Exploration Conference, Nov 2007, Noordwijk, Netherlands. ⟨hal-00324264⟩