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| Titel |
European SpaceCraft for the study of Atmospheric Particle Escape (ESCAPE): a mission proposed in response to the ESA M5-call |
| VerfasserIn |
Iannis Dandouras, Masatoshi Yamauchi, Henri Rème, Johan De Keyser, Octav Marghitu, Andrew Fazakerley, Benjamin Grison, Lynn Kistler, Anna Milillo, Rumi Nakamura, Nikolaos Paschalidis, Antonis Paschalis, Jean-Louis Pinçon, Takeshi Sakanoi, Martin Wieser, Peter Wurz, Ichiro Yoshikawa, Ingemar Häggström, Mike Liemohn, Feng Tian |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250141902
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| Publikation (Nr.) |
 EGU/EGU2017-5456.pdf |
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| Zusammenfassung |
| ESCAPE is a mission proposed in response to the ESA-M5 call that will quantitatively estimate the amount of escaping particles of the major atmospheric components (nitrogen and oxygen), as neutral and ionised species, escaping from the Earth as a magnetised planet. The spatial distribution and temporal variability of the flux of these species and their isotopic composition will be for the first time systematically investigated in an extended altitude range, from the exobase/upper ionosphere (500 km altitude) up to the magnetosphere. The goal is to understand the importance of each escape mechanism, its dependence on solar and geomagnetic activity, and to infer the history of the Earth's atmosphere over a long (geological scale) time period. Since the solar EUV and solar wind conditions during solar maximum at present are comparable to the solar minimum conditions 1–2 billion years ago, the escaping amount and the isotope and N/O ratios should be obtained as a function of external forcing (solar and geomagnetic conditions) to allow a scaling to the past. The result will be used as a reference to understand the atmospheric/ionospheric evolution of magnetised planets.
To achieve this goal, a slowly spinning spacecraft is proposed equipped with a suite of instruments developed and supplied by an international consortium. These instruments will detect the upper atmosphere and magnetosphere escaping populations by a combination of in-situ measurements and of remote-sensing observations. |
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