Nanedi Valles valley system on Mars
Science & Exploration

Nanedi Valles system on Mars

24/04/2006 3072 views 4 likes
ESA / Science & Exploration / Space Science / Mars Express

These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show the Nanedi Valles valley system, a steep-sided feature that may have been formed in part by free-flowing water.

Map showing Nanedi Valles in context
Map showing Nanedi Valles in context

The HRSC obtained these images on 3 October 2004 during orbit 905 at a ground resolution of approximately 18 metres per pixel. The images have been rotated 90 degrees clockwise, so that north is to the right.

They show the region of Nanedi Valles, a roughly 800-kilometre valley extending southwest-northeast and lying at approximately 6.0° North and 312° East in the region of Xanthe Terra, southwest of Chryse Planitia.

In the colour image, Nanedi Valles ranges from approximately 0.8- to 5.0-kilometre wide and extends to a maximum of about 500 metres below the surrounding plains. This valley is relatively flat-floored and steep-sloped, and exhibits meanders and a merging of two branches in the north.

Black and white nadir view of the Nanedi Valles valley
Black and white nadir view of the Nanedi Valles valley

The origin of these striking features remains heavily debated.

Some researchers point to sapping (erosion caused by ground-water outflow), while others suggest that flow of liquid beneath an ice cover or collapse of the surface in association with liquid flow is responsible for the valley's formation.

While the debate continues, it seems likely that some sort of continuous flow rather than a single flooding event created these features.

3D anaglyph view of the Nanedi Valles valley
3D anaglyph view of the Nanedi Valles valley

By studying Nanedi Valles, scientists hope to better understand the climatic evolution of the Red Planet. The stereo and colour capabilities of the HRSC camera enable scientists to study the planet's morphology, while researchers can analyse reflected light at different wavelengths to better recognise the various geologic units within a scene.

The colour images have been derived from the three HRSC colour channels and the nadir channel. The anaglyph image was calculated from the nadir and one stereo channel. For use on the Internet, image resolution has been decreased.

For more information on Mars Express HRSC images, please read our updated FAQ (frequently asked questions).

Related Links

Pavonis Mons
Science & Exploration

Lava tubes on Pavonis Mons

23/05/2006 5522 views 7 likes
Read
Extensional tectonics in Tempe Terra
Science & Exploration

Extensional tectonics in Tempe Terra

08/05/2006 1225 views 1 likes
Read
Nanedi Valles valley system on Mars
Science & Exploration

Nanedi Valles system on Mars

24/04/2006 3072 views 4 likes
Read
Crater Galle, the 'happy face' on Mars
Science & Exploration

'Happy face' crater on Mars

10/04/2006 8185 views 13 likes
Read
Libya Montes valley region on Mars
Science & Exploration

The Libya Montes valley on Mars

27/03/2006 2304 views 2 likes
Read
Perspective view, looking north-west, from behind the 'hourglass' crater
Science & Exploration

'Hourglass'-shaped crater - new video and perspectives

17/03/2006 2259 views 3 likes
Read
Perspective view of the eastern scarp of Olympus Mons, looking south-west
Science & Exploration

Eastern scarp of Olympus Mons

03/03/2006 4687 views 3 likes
Read
Perspective view of the Ausonia Mensa massif
Science & Exploration

Ausonia Mensa remnant massif

24/02/2006 1587 views 0 likes
Read
Perspective view of Phlegethon Catena
Science & Exploration

Pits and tectonic grabens in Phlegethon Catena

09/02/2006 2677 views 2 likes
Read
The Claritas Fossae region of Mars
Science & Exploration

Claritas Fossae region of Mars

03/02/2006 607 views 0 likes
Read
Colour view of Juventae Chasma
Science & Exploration

Sulphate deposits in Juventae Chasma

19/01/2006 1944 views 3 likes
Read
Colour view of 'butterfly'-shaped crater at Hesperia Planum
Science & Exploration

‘Butterfly’ impact crater in Hesperia Planum

04/01/2006 2398 views 4 likes
Read
Science & Exploration

Fly over the Chasma Boreale at Martian north pole

18/10/2005 3835 views 10 likes
Read
Colour nadir view of Biblis Patera
Science & Exploration

The Biblis Patera volcano

07/09/2005 2714 views 5 likes
Read
The High Resolution Stereo Camera (HRSC)
Science & Exploration

Behind the lens...

13/02/2004 2251 views 3 likes
Read