[Baps] PLS Tuesday, October 31st

[Isaac Narrett]

Hello all,

Please join us for the Planetary Lunch Seminar next Tuesday, October 31th @ 12:30 pm in room 54-517 and on Zoom<https://mit.zoom.us/j/92448700577>. We're excited to have Sarah Steele (PhD candidate, Harvard University) visiting us to give a talk about the Martian magnetism. As always, lunch will be provided. We encourage attendees to arrive a few minutes prior to have time to get food.

Sarah will be on campus all day on Tuesday, and you can sign up to meet with her https://docs.google.com/spreadsheets/d/1Ed6tMWuztTGLRBGVzYwvUZtVvhvJTnKkZ_WrsfTm0hg/edit?usp=sharing.

Best,
Isaac and the PLS Organizing Committee

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When: 10/31 @ 12:30 PM
Where: 54-517 or Zoom (pw: 54100)

Speaker: Sarah Steele (Harvard University)

Title: Martian Magnetism

Abstract: The early martian dynamo may have played a key role in the planet’s climatic evolution and habitability, with its termination potentially triggering the shift to Mars’s present cold and dry climate. The dynamo’s cessation also marks the end of convection in the martian core with potentially important implications for its thermal properties and composition. Although Mars’s magnetic history is key to understanding the planet’s early climate and deep interior, several important properties of the dynamo—most critically, the timing of its cessation—remain uncertain. In this talk, I will discuss our work to understand Mars’s magnetic history by pairing martian meteorite paleomagnetism and large impact basin magnetization modeling. Our results suggest that a long-lived but reversing martian dynamo could simultaneously satisfy constraints from old weakly magnetic impact basins, young magnetized volcanics, and meteorite paleomagnetism.

Zoom: https://mit.zoom.us/j/92448700577
Pw: 54100

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