 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Olympus Mons: The Caldera In Close-Up
Paris (ESA) Feb 13, 2004 View from overhead of the complex caldera (summit crater) at the summit of Olympus Mons on Mars, the highest volcano in our Solar System. Olympus Mons has an average elevation of 22 km and the caldera has a depth of about 3 km. This is the first high-resolution colour image of the complete caldera of Olympus Mons. The image was taken from a height of 273 km during orbit 37 by the High Resolution Stereo Camera (HRSC) on ESA's Mars Express on 21 January 2004. The view is centred at 18.3�N and 227�E. The image is about 102 km across with a resolution of 12 m per pixel. South is at the top. This complementary 3D view shows the Olympus Mons volcano in its entirety, to put the caldera images in context. It has been derived from the Mars Orbiter Laser Altimeter (MOLA) topographic data superimposed with the Mars Orbiter Camera (MOC) wide-angle image mosaic. This perspective view shows the southern part of the caldera. The image has been calculated from the digital elevation model derived from the stereo channels and combined with the nadir- and colour-channels of the Mars Express HRSC. The scene reveals tongue-shaped mass-movement features in 3D on the southern wall. The striations are tectonic faults. After lava production has ceased the caldera collapsed over the emptied magma chamber. Through the collapse the surface suffers from extension and so extensional fractures are formed. The elevation level on which these fractures can be observed represents the event of the oldest caldera collapse. Later lava production has produced new caldera collapses at different locations (the other circular depressions), they partly destroyed the circular fracture pattern of the oldest one. The data has been retrieved from a height of 273 km during orbit 37 on 21 January 2004. The view is centred at 18.3�N and 227�E. The image is about 40 km across. The vertical exaggeration is 1.8. South is up to allow the mass-movement features to be seen. This perspective view has been calculated from the digital elevation model derived from the stereo channels and combined with the nadir- and colour- channels of the HRSC. The data has been retrieved from a height of 273 km in orbit 37 on 21 January 2004. The view is centred at 18.3�N and 227�E. The image is 102 km across and has a resolution of 12 m per pixel. The vertical exaggeration is 1.8. South is up. Community Email This Article Comment On This Article Related Links Mars Express SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express Mars News and Information at MarsDaily.com Lunar Dreams and more
Spirit Heading To 'Home Plate'
Pasadena CA (JPL) Jan 09, 2006Last week Spirit completed robotic-arm work on "El Dorado." The rover used all three of its spectrometers plus the microscopic imager for readings over the New Year's weekend. |
|
|
| The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement |
