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HRSC Press Release #257 - Aram Chaos (orbit 0945)
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On 14 October 2004 the High-Resolution Stereo Camera (HRSC) onboard the ESA spacecraft Mars Express obtained image data in orbit 945 with a ground resolution of approximately 14 metres per pixel. The data were acquired in the region of Aram Chaos, at approximately 2° northern latitude and 340° eastern longitude.
Aram Chaos is a 280 km wide almost circular structure located between the outflow channel Ares Vallis and Aureum Chaos. Aram Chaos is one of many regions located east of Valles Marineris, and which are characterized by chaotic terrain. As the name chaos suggests, this terrain is made up of large-scale remnant massifs, which are heavily eroded and dominate the crater morphology. As seen in the colour image, these remnant massifs range from a few kilometres to approximately ten kilometres wide and have a relative elevation of roughly 1000 metres.
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Die Bildung des chaotischen Gebiets wird darauf zurückgeführt, dass sich im Untergrund vorhandenes Eis, Wasser oder Magma verlagerte und dadurch die darüber liegenden Gesteinsschichten zum Einsturz gebracht wurden. Auch die Erosion durch Wind scheint eine wichtige Rolle bei der Entwicklung der heutigen Geländeformen gespielt zu haben.
The western region of the colour image is characterized by brighter material, which seems to be layered and could be the result of sedimentary deposition. Distinct layering, causing a terrace-like appearance, is also visible east of this brighter material and in the relatively flat region located in the northwest of the colour image.
Die chaotischen Gebiete sind deshalb von besonderem Interesse, da sie Hinweise auf die Beziehung zwischen chaotischem Terrain, Chryse Planitia, Valles Marineris und den Ausflußtälern geben.
Some scientists believe that the numerous chaotic regions located in the eastern part of Valles Marineris were the source of water or ice thought to have created the valleys that extend into Chryse Planitia. These regions are particularly interesting because they may yield clues to the relationship between Valles Marineris, the chaotic terrain, the valleys and the Chryse basin.
The colour scenes have been derived from the three HRSC-colour channels and the nadir channel. The perspective views have been calculated from the digital terrain model derived from the stereo channels. The anaglyph image was calculated from the nadir and one stereo channel. The black and white high resolution images were derived form the nadir channel which provides the highest detail of all channels.
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The High Resolution Stereo Camera (HRSC) experiment on the ESA Mars Express Mission is led by the Principal Investigator (PI) Prof. Dr. Gerhard Neukum who also designed the camera technically. The science team of the experiment consists of 40 Co-Investigators from 33 institutions and 10 nations. The camera was developed at the German Aerospace Center (DLR) under the leadership of the PI G. Neukum and built in cooperation with industrial partners (EADS Astrium, Lewicki Microelectronic GmbH and Jena-Optronik GmbH). The experiment on Mars Express is operated by the DLR Institute of Planetary Research, through ESA/ESOC. The systematic processing of the HRSC image data is carried out at DLR. The scenes shown here were created by the PI-group at the Institute for Geological Sciences of the Freie Universitaet Berlin in cooperation with the German Aerospace Center (DLR), Institute of Planetary Research, Berlin.
hochaufgelöste Bilddaten / high resolution image data
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© Copyright: ESA/DLR/FU Berlin (G. Neukum)