Chryse Planitia

Chryse Planitia
Mars Viking 11h016.png
This image was acquired at the Viking Lander 1 site in Chryse Planitia.
Location North of Margaritifer Terra, south of Acidalia Planitia, west of Arabia Terra
Coordinates 26°42′N 320°00′E / 26.7°N 320°E / 26.7; 320Coordinates: 26°42′N 320°00′E / 26.7°N 320°E / 26.7; 320
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Chryse Planitia (Greek, "Golden Plain") is a smooth circular plain in the northern equatorial region of Mars close to the Tharsis region to the west, centered at 26°42′N 320°00′E / 26.7°N 320.0°E / 26.7; 320.0. Chryse Planitia lies partially in the Lunae Palus quadrangle and partially in the Oxia Palus quadrangle. It is 1600 km in diameter and with a floor 2.5 km below the average planetary surface altitude, and is thought to be an ancient impact basin; it has several features in common with lunar maria, such as wrinkle ridges. The density of impact craters in the 100 m to 2000 m range is close to half the average for lunar maria.

Chryse Planitia shows evidence of water erosion in the past, and is the bottom end for many outflow channels from the southern highlands as well as from Valles Marineris and the flanks of the Tharsis bulge. It is one of the lowest regions on Mars (2-3 km below the mean surface elevation of Mars), so water would tend to flow into it. The elevation generally goes down from the Tharsis Ridge to Chryse. Kasei Vallis, Maja Valles, and Nanedi Valles appear to run from high areas (Tharsis Ridge) to Chryse Planitia. On the other side of Chryse, to the east, the land gets higher. Ares Vallis travels from this high region, then empties into Chryse. Much of Tiu Valles and Simud Valles move toward Chryse as well.[1] Several ancient river valleys discovered in Chryse Planitia by the Viking Orbiters, as part of the Viking program, provided strong evidence for a great deal of running water on the surface of Mars.[2][3][4]

It has been theorized that the Chryse basin may have contained a large lake or an ocean during the Hesperian or early Amazonian periods since all of the large outflow channels entering it end at the same elevation, at which some surface features suggest an ancient shoreline may be present. Chryse basin opens into the North Polar Basin, so if an ocean was present Chryse would have been a large bay.

The Viking 1 landed in Chryse Planitia, but its landing site was not near the outflow channels and no fluvial features were visible; the terrain at that point appeared primarily volcanic in origin. The Mars Pathfinder landed in Ares Vallis, at the end of one of the outflow channels emptying into Chryse.

See also

References

  1. ^ Victor R. Baker.1982.The Channels of Mars, ISBN 0-292-71068-2
  2. ^ >Strom, R.G., Steven K. Croft, and Nadine G. Barlow, "The Martian Impact Cratering Record," Mars, University of Arizona Press, ISBN 0-8165-1257-4
  3. ^ Raeburn, P. 1998. Uncovering the Secrets of the Red Planet Mars. National Geographic Society. Washington D.C.
  4. ^ Moore, P. et al. 1990. The Atlas of the Solar System. Mitchell Beazley Publishers NY, NY.

External links


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Look at other dictionaries:

  • Chryse Planitia — Vue de Chryse Planitia par Viking 1 Lander le 11 février 1978. Géographie Géologie Coordonnées 26,7° N • 320° E …   Wikipédia en Français

  • Chryse Planitia — (nombre latino que significa Planicies de oro) es una suave planicie circular en la región ecuatorial norte del planeta Marte, cercana a la región de Tharsis. Posee un diámetro de 1.600 km, con su superficie hundida 2,5 km por debajo de la… …   Enciclopedia Universal

  • Chryse Planitia — Ebene auf Mars Chryse Planitia Das Landegebiet um die Sonde Viking 1 in Chryse Planitia …   Deutsch Wikipedia

  • Chryse Planitia — Imagen de Chryse Planitia tomada por la sonda Viking 1 en el lugar de aterrizaje. Los científicos de la misión pusieron el nombre de Big Joe (Gran Joe) a la roca que se aprecia en la imagen. Chryse Planitia (nombre greco latino que significa… …   Wikipedia Español

  • Chryse Planitia — /kruy see pleuh nish euh/, Astron. a plain on Mars, the landing site of the Viking I spacecraft. * * * ▪ region, Mars  flat lowland region in the northern hemisphere of the planet Mars that was chosen for the landing sites of the U.S. Viking 1… …   Universalium

  • Chryse Planitia — /kruy see pleuh nish euh/, Astron. a plain on Mars, the landing site of the Viking I spacecraft …   Useful english dictionary

  • Planitia — (pluriel planitiae) est un mot d origine latine désignant une surface plate, une plaine. Il est utilisé sur Mars pour décrire une plaine basse ou une grande étendue sans reliefs. Ce type de formation s oppose par conséquent aux hauts plateaux ou… …   Wikipédia en Français

  • Chryse — (die Goldene, von griechisch χρύσεος) bezeichnet einen antiken Ort in Mysien Chryse (Troas) in der griechischen Mythologie eine Insel bei Lemnos Chryse (Insel) die Kurzform von Chryse Chersonesos (z. B. bei Ptolemäus) für die Malaiische… …   Deutsch Wikipedia

  • Planitia —   [lateinisch »Fläche«, »Ebene«] die, , in der Planetennomenklatur Bezeichnung für ebene Oberflächenformationen, z. B. das Marsbecken Chryse Planitia …   Universal-Lexikon

  • Chryse — This article is about the people and places of Greek myth. For the impact basin on Mars, see [[Chryse Planitia]]. In Greek mythology, Chryse (Greek: Χρύση, Khrýsē) may refer to: Persons: Chryse, a lover of Ares and mother of Phlegyas. Chryse,… …   Wikipedia

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