[IGPP Everyone] Reminder - Today - SPACE PHYSICS SEMINAR, Friday November 15, 2019 - Geology 6704

[Marjorie Sowmendran]

REMINDER 

TODAY

SPACE PHYSICS SEMINAR

DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES

DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES

UNIVERSITY OF CALIFORNIA, LOS ANGELES



WHAT IS THE ORIGIN OF CRUSTAL MAGNETIC ANOMALIES ON MERCURY AND THE MOON?
Lon L. Hood,
Lunar and Planetary Laboratory, U. of Arizona

Magnetometer measurements from orbiting spacecraft have mapped magnetic anomalies due to magnetized material in the crusts of both the Moon and Mercury. Although there is now general agreement that the Moon once possessed a global dynamo magnetic field, the exact origin of lunar magnetic anomalies is considered to be one of the outstanding unresolved problems of lunar science (e.g., presentation by R. C. Weber at special session on 50 years of lunar science at the most recent Lunar and Planetary Science Conference). Both volcanic sources consisting of magmatic intrusions (e.g., dikes) and magnetized deposits of impact ejecta have been proposed as source materials for these anomalies. Recent mapping of magnetic anomalies on Mercury (a planetary body with many similarities to the Moon) has shed new light on this question. In addition, further mapping of existing lunar orbital data has very recently uncovered new evidence that favors one of these two models. Evidence at both bodies will be summarized and a probable answer to this unresolved question will be given.



Friday, November 15, 2019

Room 6704 Geology

3:30 - 5:00 PM


In Charge

M. Velli

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