RESEARCH ARTICLE A New Model of the Crustal Magnetic Field of Mars Using 10.1029/2018JE005854 MGS and MAVEN Key Points: 1 1 2 3 • MGS and MAVEN magnetic field Benoit Langlais , Erwan Thébault , Aymeric Houliez , Michael E. Purucker , 4 measurements are combined into a and Robert J. Lillis high-resolution magnetic field model • The new model extends up to SH 1Laboratoire de Planétologie et Géodynamique, Université de Nantes, Université d'Angers, CNRS, UMR 6112, Nantes, degree 134, corresponding to 160-km France, 2Observatoire Royal de Belgique, Uccle, Belgium, 3Planetary Magnetospheres Laboratory, NASA Goddard horizontal resolution at the Martian Space Flight Center, Greenbelt, MD, USA, 4Space Science Laboratory, University of California, Berkeley, CA, USA surface • It enables local studies, where geologic and magnetic features can be compared Abstract While devoid of an active magnetic dynamo field today, Mars possesses a remanent magnetic field that may reach several thousand nanoteslas locally. The exact origin and the events that have shaped the crustal magnetization remain largely enigmatic. Three magnetic field data sets from two spacecraft Supporting Information: • Supporting Information S1 collected over 13 cumulative years have sampled the Martian magnetic field over a range of altitudes •TableS1 from 90 up to 6,000 km: (a) Mars Global Surveyor (MGS) magnetometer (1997–2006), (b) MGS Electron Reflectometer (1999–2006), and (c) Mars Atmosphere and Volatile EvolutioN (MAVEN) magnetometer Correspondence to: (2014 to today). In this paper we combine these complementary data sets for the first time to build a new B. Langlais, model of the Martian internal magnetic field. This new model improves upon previous ones in several
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