Ismenius Lacus (Gradfeld)

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Image by Ismenius Lacus, the northern area contains relatively flat plains, the middle valleys and the south several craters.

The Ismenius-Lacus - degree field one of the 30 degree field of Mars . They were established by the United States Geological Survey ( USGS ). The number is MC-5, the degree field covers the area from 300 ° to 360 ° west longitude and from 30 ° to 65 ° south latitude .

origin of the name

The name comes from an albedo feature in the area of ​​40 ° N and 30 ° E on Mars, the area was named after the Latin word for Lake Ismenian; Ismenian is the poetic name for Thebes .

geography

The Gradfeld measures approx. 3,065 km in height and 1,500 km in width, the north / south distance is approx. 2,050 km, a little less than the length of Greenland . It covers an area of ​​approximately 4.9 million km² , about 3% of the surface of Mars. It contains parts of Deuteronilus Mensae and Protonilus Mensae , two areas that are of particular interest to scientists as they contain evidence of past and present glacial activity. At the same time, the landscape is unique on Mars and is called Fretted Terrain in English . The largest crater is the Lyot (Mars crater) whose channels may contain water . The large Mamers Valles outflow valley is also located here.

Other degree fields

Web links

Commons : Ismenius Lacus  - collection of images, videos and audio files

Individual evidence

  1. ↑ Davies, ME; Batson, RM; Wu, SSC “Geodesy and Cartography” in Kieffer, HH; Jakosky, BM; Snyder, CW; Matthews, MS, Eds. Mars. University of Arizona Press: Tucson, 1992.
  2. ↑ Ismenius Lacus in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS
  3. ↑ Distances calculated using NASA World Wind measuring tool. http://worldwind.arc.nasa.gov/ .
  4. ↑ Approximated by integrating latitudinal strips with area of ​​R ^ 2 (L1-L2) (cos (A) dA) from 30 ° to 65 ° latitude; where R = 3889 km, A is latitude, and angles expressed in radians. See: https://stackoverflow.com/questions/1340223/calculating-area-enclosed-by-arbitrary-polygon-on-earths-surface .
  5. ↑ J. Carter, F. Poulet, J.-P. Bibring, and S. Murchie. Detection of Hydrated Silicates in Crustal Outcrops in the Northern Plains of Mars. Science, 2010; 328 (5986): 1682-1686
  6. ↑ http://www.jpl.nasa.gov/news.cfm?release=2010-209  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Dead Link / www.jpl.nasa.gov  
  7. ↑ Oliver Morton: Mapping Mars: Science, Imagination, and the Birth of a World . Picador USA, New York 2002, ISBN 0-312-24551-3 , p. 98.
  8. ↑ PIA03467: The MGS MOC Wide Angle Map of Mars photojournal.jpl.nasa.gov, February 16, 2002
  9. ↑ Davies, ME; Batson, RM; Wu, SSC "Geodesy and Cartography" in Kieffer, HH; Jakosky, BM; Snyder, CW; Matthews, MS, Eds. Mars. University of Arizona Press: Tucson, 1992.