کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8143007 | 1523923 | 2015 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solar wind interaction effects on the magnetic fields around Mars: Consequences for interplanetary and crustal field measurements
ترجمه فارسی عنوان
اثر متقابل باد خورشیدی بر میدان های مغناطیسی اطراف مریخ: پیامدهای اندازه گیری میدان بین زمین و زمین
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی
The first unambiguous detections of the crustal remanent magnetic fields of Mars were obtained by Mars Global Surveyor (MGS) during its initial orbits around Mars, which probed altitudes to within â¼110Â km of the surface. However, the majority of its measurements were carried out around 400Â km altitude, fixed 2Â a.m. to 2Â p.m. local time, mapping orbit. While the general character and planetary origins of the localized crustal fields were clearly revealed by the mapping survey data, their effects on the solar wind interaction could not be investigated in much detail because of the limited mapping orbit sampling. Previous analyses (Brain et al., 2006) of the field measurements on the dayside nevertheless provided an idea of the extent to which the interaction of the solar wind and planetary fields leads to non-ideal field draping at the mapping altitude. In this study we use numerical simulations of the global solar wind interaction with Mars as an aid to interpreting that observed non-ideal behavior. In addition, motivated by models for different interplanetary field orientations, we investigate the effects of induced and reconnected (planetary and external) fields on the Martian field's properties derived at the MGS mapping orbit altitude. The results suggest that inference of the planetary low order moments is compromised by their influence. In particular, the intrinsic dipole contribution may differ from that in the current models because the induced component is so dominant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 117, November 2015, Pages 15-23
Journal: Planetary and Space Science - Volume 117, November 2015, Pages 15-23
نویسندگان
J.G. Luhmann, Y.-J. Ma, D.A. Brain, D. Ulusen, R.J. Lillis, J.S. Halekas, J.R. Espley,