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| Titel |
Spatial profiles of magnetosheath and LLBL parameters |
| VerfasserIn |
Karel Jelinek, Zdenek Nemecek, Jana Safrankova |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250053197
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| Zusammenfassung |
| The present models describing locations and shape of the magnetopause and bow shock are based usually on a statistical evaluation of magnetopause and bow shock crossings. We have developed and tested an automatic method to obtain the dayside magnetopause and bow shock positions as a function of upstream solar wind conditions. The approach of this method is (i) a suppression of a negative influence of possible bias caused by the low spacecraft apogee, (ii) decreasing of the statistical weight of multiple crossings during a short time period, and (iii) excluding of unusual crossings caused by a sudden change of solar wind parameters. Using this technique and two years of THEMIS magnetic field and plasma measurements, we identified the magnetosheath and constructed a map of magnetosheath plasma parameters normalized to the data of the solar wind monitor. We perform a study which allows us to compare the magnetosheath/LLBL profiles with results of gasdynamic and/or MHD simulations. The comparison exhibits a good agreement even on small spatial scales. |
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