HiRISE | Valley West of Ganges Chasma (PSP_009011

NASA/JPL/University of Arizona

Valley West of Ganges Chasma
PSP_009011_1705 Science Theme: Geologic Contacts/Stratigraphy

800
1024
1152
1280
1440
1600
1920
2048
2560

This image shows an apparent valley north of a 37-kilometer long pit called Ophir Cavus.This valley is just west of another 155-km long valley system called Allegheny Vallis that also emanates from the pit.

The association of valleys with the pit suggests that water was released when the pit formed, perhaps when volcanic eruptions melted ice in the surface or subsurface. The HiRISE image reveals light-toned units along portions of the plains and these could be minerals deposited by the flowing water or alteration of the plains by the water that once flowed here.

Written by: Cathy (12 August 2008)

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 (1200.7 MB)
IRB color: map-projected (561.1 MB)

JP2 EXTRAS
Grayscale: map-projected (553.0 MB),
non-map (759.5 MB)

IRB color: map projected (238.0 MB)
non-map (591.7 MB)

Merged IRB: map projected (257.6 MB)
Merged RGB: map-projected (257.9 MB)
RGB color: non map-projected (569.7 MB)

Additional Image Information
Grayscale label Color label
Merged IRB label Merged RGB label
EDR products

About color products (PDF)
HiView main page
HiRISE Online Image Viewer

Observation Toolbox

Acquisition date:	28 June 2008	Local Mars time:	3:24 PM
Latitude (centered):	-9.6 degrees	Longitude (East):	304.8 degrees
Range to target site:	258.8 km (161.7 miles)	Original image scale range:	25.9 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved
Map projected scale:	25 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	2.2 degrees	Phase angle:	59.2 degrees
Solar incidence angle:	61 degrees, with the Sun about 29 degrees above the horizon	Solar longitude:	91.5 degrees, Northern Summer
For non-map projected products:
North azimuth:	97 degrees	Sub-solar azimuth:	41.6 degrees
For map-projected products
North azimuth:	270 degrees	Sub solar azimuth:	215.8 degrees

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.