玛阿特山
Template:Infobox feature on Venus
玛阿特山可能是一座巨大的盾状火山，它是金星第二高的山，也是最大的盾状火山。在0°30′N 194°36′E / 0.5°N 194.6°E处高出行星半径8公里以上，较周边平原高达 5 公里以上。[1] 它被用古埃及真理和正义女神玛阿特来命名。
Activity
Radar sounding by the Magellan probe revealed evidence for comparatively recent volcanic activity at Maat Mons, in the form of ash flows near the summit and on the northern flank.
Intriguingly for planetary geologists, atmospheric studies carried out by the Pioneer Venus probes in the early 1980s revealed a considerable variation in the concentrations of sulfur dioxide (SO2) and methane (CH4) in Venus' middle and upper atmosphere. One possible explanation for this was the injection of volcanic gases into the atmosphere by plinian eruptions at Maat Mons.[2]
Although many lines of evidence suggest that Venus is likely to be volcanically active, present-day eruptions at Maat Mons have not been confirmed.
See also
References
- ^ PIA00106: Venus - 3D Perspective View of Maat Mons. Planetary Photojournal. Jet Propulsion Lab. 1996-08-01 [2012-06-30].
- ^ Robinson, Cordula A.; Thornhill, Gill D.; Parfitt, Elisabeth A. Large-scale volcanic activity at Maat Mons: Can this explain fluctuations in atmospheric chemistry observed by Pioneer Venus?. Journal of Geophysical Research. 1995, 100 (E6): 11755–11763. Bibcode:1995JGR...10011755R. doi:10.1029/95JE00147.
External links
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