A Possible Cause of Magnetic Anomalies on the Southern Martian Hemisphere*Supported by the National Natural Science Foundation of China Under Grant Nos 41374179 and 41421063
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Author | : |
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Total Pages | : |
Release | : 2016 |
ISBN-10 | : OCLC:1051947149 |
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Rating | : 4/5 (49 Downloads) |
Book Synopsis A Possible Cause of Magnetic Anomalies on the Southern Martian Hemisphere*Supported by the National Natural Science Foundation of China Under Grant Nos 41374179 and 41421063 by :
Book excerpt: Abstract : From the topology of a synthetic aurora map, we propose a mechanism for the magnetic anomalies on the southern martian hemisphere, i.e., impacts by asteroids when the dynamo is active. The quasi concentric circles of aurora suggest that there are two-to-three convectional cells for each impact. The whole synthetic aurora is induced by three major impacts of asteroids. The east-west lineation features of crust magnetizations are due to the east-west trending locations of three impacts. The alternatively changed sign of crust magnetization originates from the alternatively changed flow direction on the tops of adjacent convectional cells.