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Lopes-Gautier, R.

Publications and source records attributed to Lopes-Gautier, R..

At least 37 records · Page 2

Active Volcanism on IO: Global Distribution and Variations in Activity

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.

near-infrared mapping spectrometry solid state ima

Surficial Iron Conversion Mechanisms for the Surface of Mercury

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.

Mercury iron planetary geology planetary geophysic