Аннотация
Gusev Crater was selected as the landing site for the Mars Exploration
Rover (MER) Spirit mission. Located at the outlet of Ma'adim Vallis
and 250 km south of the volcano Apollinaris Patera, Gusev is an outstanding
site to achieve the goals of the MER mission. The crater could have
collected sediments from a variety of sources during its 3.9 Ga history,
including fluvial, lacustrine, volcanic, glacial, impact, regional
and local aeolian, and global air falls. It is a unique site to investigate
the past history of water on Mars, climate and geological changes,
and the potential habitability of the planet, which are central Science
objectives of the MER mission. Because of its complex history and
potential diversity, Gusev will allow the testing of a large spectrum
of hypotheses with the complete suite of MER instruments. Evidence
consistent with long-lived lake episodes exist in the landing ellipse
area. They might offer a unique opportunity to study, for the first
time, Martian aqueous sediments and minerals formed in situ in their
geological context. We review the geological history and diversity
of the landing site, the Science hypotheses that can be tested during
the MER mission, and the relevance of Gusev to the MER mission objectives
and payload.
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