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Inversion of Gravity and Magnetic Field Data for Tyrrhena PateraTyrrhena Patera is located to the southeast/northeast of the Isidis/Hellas impact basin. It was geologically active into the Late Amazonian, although the main edifice was formed in the Noachian(approximately 3.7-4.0 Ga). Tyrrhena Patera and the surrounding area contain gravity and magnetic anomalies that appear to be correlated. The results presented here are for the anomalies 1a and 1b (closest to Tyrrhena Patera), however other anomalies in this region have been modeled and will be presented at the conference.The Mars Global Surveyor (MGS) free-air gravity signature of Tyrrhena Patera has been studied by Kiefer, who inferred the existence of an extinct magma chamber below it. The magnetic signature has been mapped by Lillis R. J. et al., who compared electron reflectometer data, analogous to the total magnetic field, for Syrtis Major and Tyrrhena Patera and argued for demagnetization of both volcanoes.
Document ID
20150005798
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Milbury, C.
(California Univ. Los Angeles, CA, United States)
Schubert, G.
(California Univ. Los Angeles, CA, United States)
Raymond, C. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Smrekar, S. E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 17, 2015
Publication Date
March 7, 2011
Subject Category
Geophysics
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Other
Keywords
magnetic anomaly
Mars
volcanism
dynamo

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