A New Model of the Crustal Magnetic Field of Mars Using MGS and MAVEN
| العنوان: | A New Model of the Crustal Magnetic Field of Mars Using MGS and MAVEN |
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| المؤلفون: | Michael E. Purucker, Erwan Thébault, Robert Lillis, Aymeric Houliez, Benoit Langlais |
| المساهمون: | Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Journal of Geophysical Research. Planets Journal of Geophysical Research. Planets, Wiley-Blackwell, 2019, ⟨10.1029/2018JE005854⟩ J Geophys Res Planets Journal of Geophysical Research: Planets |
| بيانات النشر: | HAL CCSD, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Martian, 010504 meteorology & atmospheric sciences, Field (physics), Magnetometer, Geophysics, Mars Exploration Program, Atmosphere of Mars, 01 natural sciences, Article, law.invention, Magnetic field, Magnetization, [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology, 13. Climate action, Space and Planetary Science, Geochemistry and Petrology, law, 0103 physical sciences, Dynamo theory, Earth and Planetary Sciences (miscellaneous), 010303 astronomy & astrophysics, Geology, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences |
| الوصف: | 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 collected over 13 cumulative years have sampled the Martian magnetic field over a range of altitudes 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 (2014 to today). In this paper we combine these complementary data sets for the first time to build a new model of the Martian internal magnetic field. This new model improves upon previous ones in several aspects: comprehensive data coverage, refined data selection scheme, modified modeling scheme, discrete-to-continuous transformation of the model, and increased model resolution. The new model has a spatial resolution of ∼160 km at the surface, corresponding to spherical harmonic degree 134. It shows small scales and well-defined features, which can now be associated with geological signatures. |
| اللغة: | English |
| تدمد: | 2169-9097 2169-9100 |
| DOI: | 10.1029/2018JE005854⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42d734672ba1b35761454ed56bb1f03a https://hal.archives-ouvertes.fr/hal-02176322/file/Langlais-et-al_2019_JGR_MarsMagneticModel.pdf |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....42d734672ba1b35761454ed56bb1f03a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21699097 21699100 |
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| DOI: | 10.1029/2018JE005854⟩ |