Oxbows and Cutoffs in Idaeus Fossae
NASA/JPL/University of Arizona
Oxbows and Cutoffs in Idaeus Fossae
ESP_029054_2165  Science Theme: Fluvial Processes
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As rivers age they can meander and occasionally these meanders get so pronounced that the river cuts off these curving loops at their narrow end leaving them as isolated as oxbow lakes.

The objective of this observation is to check for the presence of these features. At HiRISE resolution, we should be able to test for traces of former meandering river channels in what looks like an oxbow feature in images from lower-resolution cameras.

Written by: HiRISE Science Team   (28 August 2013)

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Acquisition date
07 October 2012

Local Mars time:
15:32

Latitude (centered)
36.196°

Longitude (East)
305.990°

Range to target site
295.7 km (184.8 miles)

Original image scale range
29.6 cm/pixel (with 1 x 1 binning) so objects ~89 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
6.2°

Phase angle:
56.6°

Solar incidence angle
62°, with the Sun about 28° above the horizon

Solar longitude
184.4°, Northern Autumn

North azimuth:
96°

Sub-solar azimuth:
339.2°
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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:
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.