Eos Chasma, part of Valles Marineris

Aug 30, 2004
Eos Chasma, part of Valles Marineris

These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show the southern part of Valles Marineris, called Eos Chasma.

The images were taken during orbit 533 in June 2004, and are centred at Mars longitude 322° East and latitude 11° South. The image resolution is approximately 80 metres per pixel.

Between surrounding plains and the smooth valley floor, a height difference of about 5000 metres has been measured.
The plain to the south, above Eos Chasma, is covered by several impact craters with diameters of around 20 kilometres and drainage channels.

To the east on this plain, isolated regions with cracked surfaces become more prominent. The direction of flow of the drainage channels in this area of the plain is ambiguous, as the channels to the north-east drain towards the south-east, and those in the south-west normally flow to the north-west.

Eos Chasma, part of Valles Marineris

The northern part of Eos Chasma’s valley floor is a rough area with angular hills reaching almost 1000 metres. In contrast, the southern part reveals a smooth topography with distinct flow structures.

In some areas of the southern slope, at least two terrace levels can be observed. Some haze in the valley hints at the presence of aerosols (airborne microscopic dust or liquid droplets).

The colour image was created from the HRSC’s nadir (vertical view) and three colour channels. The 3D anaglyph image was created using the nadir and one of the stereo channels.

The perspective views, with height exaggerated by a factor of four, were calculated from the digital terrain model derived from the stereo channels. Image resolution was reduced for use on the internet.

Source: ESA

Explore further: Russian, American ready for a year in space

add to favorites email to friend print save as pdf

Related Stories

Beauty from chaos on Mars

Apr 10, 2014

Beautiful streamlined islands and narrow gorges were carved by fast-flowing water pounding through a small, plateau region near the southeastern margin of the vast Vallis Marineris canyon system.

As seen from space: Mt. Etna boils over

Feb 22, 2013

Italy's Mount Etna has turned on again, spewing lava and gas in its first big eruption in 2013. The volcano is one of the most active in the world, and is Europe's tallest active volcano, currently standing ...

NASA's NPP satellite acquires first VIIRS image

Nov 22, 2011

The Visible Infrared Imager Radiometer Suite (VIIRS) onboard NASA's newest Earth-observing satellite, NPP, acquired its first measurements on Nov. 21, 2011. This high-resolution image is of a broad swath of ...

NASA'S NPP satellite acquires first ATMS measurements

Nov 10, 2011

The Advanced Technology Microwave Sounder (ATMS) on board NASA's newest Earth-observing satellite, NPP, acquired its first measurements on November 8, 2011. The image shows the ATMS channel 18 data, which ...

Recommended for you

Is the universe finite or infinite?

49 minutes ago

Two possiblities exist: either the Universe is finite and has a size, or it's infinite and goes on forever. Both possibilities have mind-bending implications.

'Teapot' nova begins to wane

3 hours ago

A star, or nova, has appeared in the constellation of Sagittarius and, even though it is now waning, it is still bright enough to be visible in the sky over Perth through binoculars or a telescope.

Scuttling satellites to save space

3 hours ago

It takes a lot of ingenuity – not to mention a massive quantity of sheer force – to get satellites into orbit. Now space engineers are applying comparable ingenuity to the challenge of getting their missions ...

A new look at the sun's magnetic field

4 hours ago

Sunspots, bursts of radiation and violent eruptions are signs that our sun is permanently active. Researchers have long known that this activity varies in a cycle of around eleven years' duration. Even if ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.