Io as viewed by Galileo's Near-Infrared Mapping Spectrometer
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Engineering topics
Publications and source records attributed to Lopes-Gautier, R..
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Infrared spectral images of Jupiter's volcanic moon Io, acquired during October and November 1999 flybys of the Galileo spacecraft, were used to study the thermal structure and sulfur dioxide distribution of active volcanos.
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The Galileo spacecraft has been observing Io throughout the Prime and Europa missions.
The NIMS instrument on Galileo has detected numerous hotspots during the Galileo prime mission and the Galileo Europa mission.
Io's volcanic activity has been monitored by instruments aboard the Galileo spacecraft since June 28, 1996. We present results from observations by the Near-Infrared Mapping Spectrometer (NIM) for the first ten orbits of Galileo, correlate them with results from the Solid State Imaging System (SSI)and from ground-based observations, and compare them to what was known about Io's volcanic activity from observations made during the two Voyager fly-bys in 1979.
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The Near-infrared Mapping Spectrometer on Galileo has monitored the volcanic activity on Io since June 28, 1996. This paper presents preliminary analysis of NIMS thermal data for the first four orbits of the Galileo mission.
The Galileo Near Infrared Mapping Spectrometer was used to investigate the distribution and properties of sulfur dioxide over the surface of Io, and qualitative results for the anti-jove hemisphere are presented here.
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The Near Infrared Mapping Spectrometer performed spectral studies of Jupiter and the Galilean satellites during the June 1996 perijove pass of the Galileo spacecraft.
The spectral evidence for the presence of iron on the surface of Mercury is equivocal. Estimates of strength of the 0.9 to 1.2 micron coordination band range from weak to non-existent. This band provides a measure of iron bound in pyroxenes, feldspars and olivine. This band is ubiquitous for spectra of Earth, the Moon, and Mars. It is reasonable to believe that Mercury would have similar total iron.
A primary objective of the Galileo mission is to investigate Io s vulcanism. The NIMS combines imaging and spectral capabilities to map Io s surface and plumes.
The Galileo spacecraft's Near-Infrared Mapping Spectrometer.
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