Icaria Planum

Last updated • 1 min readFrom Wikipedia, The Free Encyclopedia
MOLA map showing boundaries of Icaria Planum and other regions. Color indicates elevation. Wikimolaargyre.jpg
MOLA map showing boundaries of Icaria Planum and other regions. Color indicates elevation.
Crater and one of many nearby channels, as seen by HiRISE under HiWish program. Picture is from Icaria Planum. ESP 024955delta.jpg
Crater and one of many nearby channels, as seen by HiRISE under HiWish program. Picture is from Icaria Planum.

Icaria Planum is a region on Mars in the Thaumasia quadrangle of Mars that is 566.59 km across and is located at 43.27 S and 253.96E. It was named after a classic albedo feature that was approved in 1979. The name of the classic feature was based on the land where according to greek mythology, Icarus died (Icaria). [1]

See also

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Arcadia quadrangle Map of Mars

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Phaethontis quadrangle Map of Mars

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Thaumasia quadrangle Map of Mars

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The common surface features of Mars include dark slope streaks, dust devil tracks, sand dunes, Medusae Fossae Formation, fretted terrain, layers, gullies, glaciers, scalloped topography, chaos terrain, possible ancient rivers, pedestal craters, brain terrain, and ring mold craters.

Brain terrain Feature of the Martian surface

Brain terrain, also called knobs-brain coral and brain coral terrain, is a feature of the Martian surface, consisting of complex ridges found on lobate debris aprons, lineated valley fill and concentric crater fill. It is so named because it suggests the ridges on the surface of the human brain. Wide ridges are called closed-cell brain terrain, and the less common narrow ridges are called open-cell brain terrain. It is thought that the wide closed-cell terrain contains a core of ice, and when the ice disappears the center of the wide ridge collapses to produce the narrow ridges of the open-cell brain terrain. Shadow measurements from HiRISE indicate the ridges are 4-5 meters high. Brain terrain has been observed to form from what has been called an "Upper Plains Unit." The process begins with the formation of stress cracks. The upper plains unit fell from the sky as snow and as ice coated dust.

Latitude dependent mantle

Much of the Martian surface is covered with a thick ice-rich, mantle layer that has fallen from the sky a number of times in the past. In some places a number of layers are visible in the mantle.

Lucus Planum

Lucus Planum is a region on Mars, named after an albedo feature. Its name was approved by the IAU in 1997. The center latitude of the feature is 4.99 degrees S and the center longitude is 182.83 degrees It lies just to the east and north east of the volcano Apollinaris Patera. Lucus Planum lies in both the Memnonia quadrangle and the Aeolis quadrangles. It is part of a region called the "Medusae Fossae Formation" Part of this region is covered with yardangs. They are formed by the action of wind on sand sized particles; hence they often point in the direction that the winds were blowing when they were formed. Views of yardangs in this region are shown below.

Aonia Terra

Aonia Terra is a region in the southern hemisphere of the planet Mars. It is named after a classical albedo feature Aonia, that was named after the ancient Greek region Aonia.

References

  1. C. Sagan (1980). "Editorial". Icarus. 41 (1): iii. Bibcode:1980Icar...41D...3S. doi:10.1016/0019-1035(80)90155-4.