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| Titel |
Two possible types of regions with different ground water distribution over
the Gale crater alone the MSL traverse according to DAN experiment onboard
the Curiosity rover. |
| VerfasserIn |
Alexander Kozyrev, Igor Mitrofanov, Denis Lisov, Maxim Litvak, Andrey Vostrukhin, Dmitry Golovin, Alexey Malakhov, Maxim Mokrousov, Sergey Nikiforov, Anton Sanin |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250135807
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| Publikation (Nr.) |
 EGU/EGU2016-16714.pdf |
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| Zusammenfassung |
| In the report will be presented the result of evaluations of water and chlorine contents at the
Martian subsurface in the Gale crater. This result based on data of active neutron
measurements by DAN experiment aboard NASA’s Mars rover "Curiosity" in 412 sites along
the 11 km of the rover traverse. In 78% of studied sites the distribution of water can be
considered as homogeneous with average water content of 2.1 ± 0.5%. In 22% of sites the
data suggest the two-layer model of the water distribution in the soil. The average water
content in the top layer is about 2-3%, which is close to the value for site with the
homogeneous distribution of water. In the first type of sites with two-layer water distribution,
which constitute 8% of the total number, the data suggest the mass fraction of water 5.6 ±
2.7% in the bottom layer below the depth of 27 ± 18 cm. In the second type of sites with
two-layer water distribution, which constitute 14% of the total number, data request much
smaller fraction of water 1.2 ± 0.5% in the bottom layer below the depth of 14 ± 7 cm. For
interpretation of the observations, one may suggest that the two types of regions exist in
the Gale crater with high and low water content, which corresponds to different
horizons of sediments formed in water and atmospheric environments, respectively. |
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