Small Shield Volcano in East Tharsis region
NASA/JPL/University of Arizona

Small Shield Volcano in East Tharsis region
PSP_010569_1720  Science Theme: Volcanic Processes
Italian 



WALLPAPER

800  1024  
1152  1280  
1440  1600  
1920  2048  
2560  
This image shows a small shield volcano in the Eastern Tharsis region of Mars. The Tharsis region is located on the Martian equator and contains some of the solar system's largest volcanoes.

The oval shaped depression in the center of the image is the summit pit of the volcano. Emanating from the summit crater, is a raised, leveed lava channel that branches downhill. Lava channels are narrow pathways through which lava flows on the volcano surface. The volume of lava in the channel can often fluctuate and sometimes lava will overflow the channel. When this happens, lava congeals and cools along the edges of the channel forming natural levees and building up the lava channel above the surrounding surface.

Shield volcanoes have shallow-sloping sides and get their name from their resemblance to a warrior's shield. They form from basaltic lava that flows easily, or has a low viscosity, and builds up over time to form a broad shield volcano profile.

Some of the largest volcanoes on Earth, such as Mauna Loa and Mauna Kea of Hawaii, are shield volcanoes.

Written by: Maria Banks   (21 January 2009)

  Click to share this post on Twitter Click to share this post on Facebook Click to share this post on Google+ Click to share this post on Tumblr


 Image Products: All image links are drag & drop for HiView, or click to download
JPEG
Grayscale: map projected  non-map
IRB color: map projected  non-map
Merged IRB: map projected
Merged RGB: map projected
RGB color: non-map projected

JP2 DOWNLOAD
Grayscale: map-projected (269.7 MB)
IRB color: map-projected (132.9 MB)

JP2 EXTRAS
Grayscale: map-projected  (110.7 MB),
non-map  (180.3 MB)
IRB color: map projected  (44.9 MB)
non-map  (133.3 MB)
Merged IRB: map projected  (268.1 MB)
Merged RGB: map-projected  (276.0 MB)
RGB color: non map-projected  (130.5 MB)

ADDITIONAL IMAGE INFORMATION
Grayscale label   Color label
Merged IRB label   Merged RGB label
EDR products

About color products (PDF)
HiView main page

 Observation Toolbox
Acquisition date:28 October 2008 Local Mars time: 3:44 PM
Latitude (centered):-7.755° Longitude (East):249.310°
Range to target site:254.9 km (159.3 miles)Original image scale range:51.0 cm/pixel (with 2 x 2 binning) so objects ~153 cm across are resolved
Map projected scale:50 cm/pixel and North is upMap projection:Equirectangular
Emission angle:6.8° Phase angle:53.5°
Solar incidence angle:59°, with the Sun about 31° above the horizon Solar longitude:148.5°, Northern Summer
For non-map projected products:
North azimuth:97° Sub-solar azimuth:26.5°
For map-projected products
North azimuth:270°Sub solar azimuth:199.8°

Context map

Usage Policy
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible: Image: NASA/JPL/University of Arizona
Postscript
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.