GP13A:
Planetary Magnetism and Paleomagnetism I

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Session ID#: 15743

Session Description:
Paleomagnetism, satellite measurements, and planetary dynamo models provide insight into the understanding of the interior structures and thermal evolution of solar system bodies. At least seven bodies in the solar system have active dynamos. Mars, the Moon, Mercury and the Earth had ancient dynamo fields. A number of planetesimals are thought to have generated magnetic fields in their early history. Conversely, many other bodies do not have active dynamos and some meteorites are unmagnetized. Some meteorites likely record early fields associated with the protoplanetary disk or Sun. Induced magnetism is also being used to probe planetary interiors.  This session calls for contributions relating to three aspects of magnetism on planets, their moons, and solar system small bodies: 1) Paleomagnetism and rock magnetism of meteorites, returned samples, and their analogs; 2) Spacecraft measurements of dynamo fields, crustal magnetism, and magnetic induction; 3) Developments in dynamo theory from experiments to numerical simulations.
Primary Convener:  Jerome Gattacceca, CNRS / Aix-Marseille University, CEREGE UM34, Aix-en-Provence, France
Conveners:  Sabine Stanley, University of Toronto, Physics, Toronto, ON, Canada, Yoann Quesnel, CNRS / Aix-Marseille University, CEREGE UM34, Aix-en-Provence, France and Benjamin P Weiss, MIT, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States
Chairs:  Benjamin P Weiss, MIT, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States and Benoit Langlais, LPG Laboratoire de Planétologie et Géodynamique de Nantes, Nantes Cedex 03, France
OSPA Liaison:  Yoann Quesnel, CNRS / Aix-Marseille University, CEREGE UM34, Aix-en-Provence, France
Co-Organized with:
Planetary Sciences, and Planetary Sciences

Cross-Listed:
  • P - Planetary Sciences

Proposed Co-Organized Session with:
  • P - Planetary Sciences
Index Terms:

1510 Dynamo: theories and simulations [GEOMAGNETISM AND PALEOMAGNETISM]
1540 Rock and mineral magnetism [GEOMAGNETISM AND PALEOMAGNETISM]
1595 Planetary magnetism: all frequencies and wavelengths [GEOMAGNETISM AND PALEOMAGNETISM]
6030 Magnetic fields and magnetism [PLANETARY SCIENCES: COMETS AND SMALL BODIES]

Abstracts Submitted to this Session:

The large-scale crustal magnetic field on Venus north polar region (133395)
Zhaojin Rong1, Weixing Wan2, Yong Wei1, Rixiang Zhu3, R. Fu4, Gabriella Stenberg Wieser5, Yoshifumi Futaana5, Stas Barbash6, Lihui Chai1, Chao Shen7 and Jun Zhong1, (1)Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (2)IGG Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China, (3)Institute of Geology and Geophysics, Chinese Academy of Sciences, State Key Laboratory of Lithospheric Evolution, Beijing, China, (4)Lamont-Doherty Earth Observatory, New York, United States, (5)IRF Swedish Institute of Space Physics Kiruna, Kiruna, Sweden, (6)NASA/GSFC, Greenbelt, United States, (7)HIT Harbin Institute of Technology, Harbin, China
Crustal Magnetic Fields on Mars from MAVEN data (145335)
Anna Mittelholz, ETH Zurich, Zurich, Switzerland and Catherine Johnson, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada
The Crustal Magnetic Field of Terra Sirenum and Cimmeria, Mars. A Spectral Perspective. (134007)
Alain Plattner, California State University Fresno, Earth and Environmental Sciences, Fresno, CA, United States, Frederik J Simons, Princeton University, Geosciences, Princeton, NJ, United States and Gregor Golabek, Universität Bayreuth, Bayerisches Geoinstitut, Bayreuth, Germany
Magnetic Properties of Synthetic Gusev Crater Basalts: Implications for Remanence Acquisition and Impact Demagnetization of the Martian Crust (185699)
Stefanie A Brachfeld1, Emily First2, Julia E Hammer2, Sarah T Stewart3, Markos Hankin4, Dylan Spaulding5, Julie A Bowles6, Becky E Strauss7, Anthony C Withers8 and Joshua M Feinberg9, (1)Montclair State University, Earth and Environmental Studies, Montclair, NJ, United States, (2)University of Hawaii at Manoa, Honolulu, HI, United States, (3)University of California, Earth and Planetary Sciences, Davis, United States, (4)Harvard University, Cambridge, MA, United States, (5)University of California Davis, Earth and Planetary Sciences, Davis, CA, United States, (6)University of Wisconsin Milwaukee, Geosciences, Milwaukee, WI, United States, (7)Institute for Rock Magnetism, University of Minnesota, Minneapolis, MN, United States, (8)University of Western Ontario, Earth Sciences, London, ON, Canada, (9)University of Minnesota Twin Cities, Institute for Rock Magnetism, Department of Earth & Environmental Sciences, Minneapolis, United States
Pallasite Paleomagnetism: Quiescence of a Core Dynamo (Invited) (150040)
Claire I O Nichols1, James Francis Joseph Bryson2, Benjamin P Weiss3, Julia Herrero-Albillos4, Florian Kronast5, Francis Nimmo6 and Richard J Harrison1, (1)University of Cambridge, Cambridge, United Kingdom, (2)University of Cambridge, Department of Earth Sciences, Cambridge, United Kingdom, (3)MIT, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States, (4)Universidad de Zaragoza, Zaragoza, Spain, (5)Helmholtz-Zentrum Berlin, BESSY II, Berlin, Germany, (6)University of California, Santa Cruz, Department of Earth and Planetary Sciences, Santa Cruz, United States
Lifetime of the Lunar Dynamo Constrained by the Young Apollo Regolith Breccia 15015 (167372)
Huapei Wang and Benjamin P Weiss, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Iron snow in the cores of Ganymede and the Moon (Invited) (184819)
Tina Ruckriemen-Bez1, Doris Breuer2 and Tilman Spohn1, (1)German Aerospace Center DLR Berlin, Berlin, Germany, (2)German Aerospace Center DLR Berlin, Institute of Planetary Research, Berlin, Germany
The Role of Convective Shell Thickness on Dynamo Scaling Laws for Magnetic Field Morphology: Implications for the Ice Giants and Future Earth (144847)
Sabine Stanley and Bob Yunsheng Tian, University of Toronto, Toronto, ON, Canada

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