File:Annotated nadir view of Nepenthes Mensae ESA217794.tiff
Original file (7,828 × 3,500 pixels, file size: 20.59 MB, MIME type: image/tiff)
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Summary
[edit]DescriptionAnnotated nadir view of Nepenthes Mensae ESA217794.tiff |
English: The High Resolution Stereo Camera on board ESA’s Mars Express orbiter imaged Nepenthes Mensae, a river delta on Mars, on 22 January 2008.
The data was acquired in the region lying at approximately 3° north and 121° east with a ground resolution of 15 m/pixel. The southern part of the image shows a structure reminiscent of a river delta on Earth (1) whose material was eroded from a valley, about 30 km long and upto 1000 m deep (2). This formed a fan-shaped deposit at the mouth of the valley. The rim of the deposit stands roughly 300 m above the floor of the depression. The resemblance of the structure to river deltas on Earth suggests that it was formed by a similar mechanism. Scientists believe that sediment transported by water was deposited as the flow of the water slowed down where the channel widened and met the mouth of the river. The pictures show that the region was affected by two episodes of flooding. The first left a cone-shaped deposit, reaching far out into the lowland. The second episode formed the fan with the distinct margin. This margin could indicate the location where sediments flowed into a standing body of water or ice. Numerous hills and flat-topped mountains visible in the central part of the depression (3) are remnants of the material that was present in the area. The material was then eroded forming the depression, leaving behind the elevations visible today. |
Date | |
Source | http://www.esa.int/spaceinimages/Images/2008/04/Annotated_nadir_view_of_Nepenthes_Mensae |
Author | European Space Agency |
Permission (Reusing this file) |
ESA/DLR/FU Berlin (G. Neukum),CC BY-SA 3.0 IGO |
Other versions |
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Title InfoField | Annotated nadir view of Nepenthes Mensae |
Mission InfoField | Mars Express |
Activity InfoField | Space Science |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:21, 24 May 2017 | 7,828 × 3,500 (20.59 MB) | Fæ (talk | contribs) | European Space Agency, Id 217794, http://www.esa.int/spaceinimages/Images/2008/04/Annotated_nadir_view_of_Nepenthes_Mensae, User:Fæ/Project_list/ESA |
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Image title | DB-TIFF |
---|---|
height | 3,500 |
width | 7,828 |
Width | 7,828 px |
Height | 3,500 px |
Compression scheme | LZW |
Pixel composition | Black and white (Black is 0) |
Orientation | Normal |
Number of components | 1 |
Number of rows per strip | 33 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 15:40, 9 April 2008 |
Color space | Uncalibrated |