Hartwig (Martian crater)
Map of Argyre quadrangle with major features labeled. Galle crater looks like a smile.
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| Planet | Mars |
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| Coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
| Diameter | 105 km |
| Eponym | Ernst Hartwig, a German astronomer (1851-1923) |
Hartwig Crater is a crater in the Argyre quadrangle of Mars, located at 39° south latitude and 16° west longitude. It is 105 km in diameter and was named after Ernst Hartwig, a German astronomer (1851–1923).[1]
Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak.[2] The peak is caused by a rebound of the crater floor following the impact.[3] If one measures the diameter of a crater, the original depth can be estimated with various ratios. Because of this relationship, researchers have found that many Martian craters contain a great deal of material; much of it is believed to be ice deposited when the climate was different.[4]
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Wikihartwig.jpg
West side of Hartwig Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). The smaller crater is on the rim of Hartwig Crater.
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Wikihartwigtongue.jpg
Tongue-shaped glaciers from previous image of Hartwig Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Arrows indicate the tongue-shaped glaciers.
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Middle section of Hartwig Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).
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Wikihartwig.jpg
Channels on northern wall of Hartwig, as seen by CTX camera (on Mars Reconnaissance Orbiter). Note: this is an enlargement of the previous photo of the middle section of Hartwig Crater.
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Hartwig Crater Floor, as seen by HiRISE. The scale bar is 500 meters long.
See also
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References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ http://www.lpi.usra.edu/publications/slidesets/stones/
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Garvin, J., et al. 2002. Global geometric properities of martian impact craters. Lunar Planet Sci. 33. Abstract @1255.
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