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Planetary Magnetic Dynamo Effect on Atmospheric Protection of Early Earth and Mars
| Content Provider | Semantic Scholar |
|---|---|
| Author | Dehant, Véronique Lammer, Helmut Kulikov, Yuri N. Griessmeier, J.-M. Breuer, Doris Verhoeven, Olivier Karatekin, Özgür Hoolst, Tim Van Korablev, Oleg Lognonné, Philippe |
| Copyright Year | 2007 |
| Abstract | Abstract In light of assessing the habitability of Mars, we examine the impact of the magnetic field on the atmosphere. When there is a magnetic field, the atmosphere is protected from erosion by solar wind. The magnetic field ensures the maintenance of a dense atmosphere, necessary for liquid water to exist on the surface of Mars. We also examine the impact of the rotation of Mars on the magnetic field. When the magnetic field of Mars ceased to exist (about 4 Gyr ago), atmospheric escape induced by solar wind began. We consider scenarios which could ultimately lead to a decrease of atmospheric pressure to the presently observed value of 7 mbar: a much weaker early martian magnetic field, a late onset of the dynamo, and high erosion rates of a denser early atmosphere. |
| Starting Page | 279 |
| Ending Page | 300 |
| Page Count | 22 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s11214-007-9163-9 |
| Volume Number | 129 |
| Alternate Webpage(s) | https://websites.pmc.ucsc.edu/~rcoe/eart290C/Additional%20Papers/Dehant_MagFieldAtmProtection_SpaceSciRev07.pdf |
| Alternate Webpage(s) | https://page-one.springer.com/pdf/preview/10.1007/978-0-387-74288-5_10 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
