Non-thermal water loss of the early Mars: 3D multi-ion hybrid simulations
作者： A. Boesswetter , H. Lammer , Y. Kulikov , U. Motschmann , S. Simon
DOI: 10.1016/J.PSS.2010.10.003
关键词:
摘要: In this study we analyze the non-thermal loss rates of O+, O2+ and CO2+ ions over last 4.5 billion years (Gyr) in Martian history by using a 3D hybrid model. For reason derived past solar wind conditions detail. We take into account intensified particle flux early Sun as well an atmosphere, which was exposed to sun's extreme ultraviolet (EUV) radiation Gyr ago that 100 times stronger than today. Furthermore, model evolution interplanetary magnetic field Weber & Davis The ‘external’ influences Sun's lead formation ionospheric obstacle photoionization, charge exchange electron impact. could show dominant ionization mechanism. Several simulations for different stages at 1, 2, 5, 10, 30 EUV, were performed escape processes ion pick-up, momentum transfer from ionosphere detached plasma clouds. Our results non-linear rates. Using mean parameters result oxygen equivalent depth global ocean about 2.6 m Gyr. induced strength be increased up 2000 nT. A simulation run with high density 205 during 150 million after sun reached zero age sequence (ZAMS).
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sci-hub.se 参考文章(76)
H. Lammer, F. Selsis, A. Hanslmeier, I. Ribas, E. F. Guinan, M. G. Tehrany, L. M. Lara, H. I. M. Lichtenegger, Radiation and particle exposure of the Martian paleoatmosphere: implications for the loss of water Exo-Astrobiology. ,vol. 518, pp. 553- ,(2002)
Rainer Schwenn, Large-Scale Structure of the Interplanetary Medium Physics of the Inner Heliosphere I. pp. 99- 181 ,(1990) , 10.1007/978-3-642-75361-9_3
T. Bagdonat, U. Motschmann, K.-H. Glassmeier, E. Kührt, Plasma Environment of Comet Churyumov-Gerasimenko — 3D Hybrid Code Simulations Springer Netherlands. pp. 153- 166 ,(2004) , 10.1007/978-1-4020-2573-0_16
Victor R. Baker, Water and the martian landscape Nature. ,vol. 412, pp. 228- 236 ,(2001) , 10.1038/35084172
David J. Stevenson, Mars' core and magnetism Nature. ,vol. 412, pp. 214- 219 ,(2001) , 10.1038/35084155
H. Lammer, H.I.M. Lichtenegger, C. Kolb, I. Ribas, E.F. Guinan, R. Abart, S.J. Bauer, Loss of water from Mars: Implications for the oxidation of the soil Icarus. ,vol. 165, pp. 9- 25 ,(2003) , 10.1016/S0019-1035(03)00170-2
I. Ribas, E. F. Guinan, Our Changing Sun: The Role of Solar Nuclear Evolution and Magnetic Activity on Earth's Atmosphere and Climate The Evolving Sun and its Influence on Planetary Environments. ,vol. 269, pp. 85- ,(2002)
G. Schubert, C. T. Russell, W. B. Moore, Timing of the Martian dynamo. Nature. ,vol. 408, pp. 666- 667 ,(2000) , 10.1038/35047163
S. H. Saar, Recent magnetic fields measurements of stellar Stellar Surface Structure. ,vol. 176, pp. 237- ,(1996)
J. David Dorren, Edward F. Guinan, The Sun in Time: Detecting and Modelling Magnetic Inhomogeneities on Solar-Type Stars Invited Papers from IAU Colloquium 143: The Sun as a Variable Star: Solar and Stellar Irradiance Variations. ,vol. 143, pp. 206- 216 ,(1994) , 10.1017/S0252921100024702