Streamlined Hills in Elysium Planitia
NASA/JPL-Caltech/UArizona
Streamlined Hills in Elysium Planitia
ESP_026435_1960  Science Theme: Volcanic Processes
This observation was taken to investigate the topography of hills that were eroded by floods of water or lava. In many locations near here it is clear that the last fluid to flow through the region was lava.

Clear margins of lava flows are visible as well as lava textures on the channel floor. In this location, the cover of wind-blown sand and the effect of many small impact craters has erased such obvious indicators of lava. This is likely because the lava coating is thin and can be easily erased.

However, it is also possible that no lava passed through this location. Further investigation of these data should help us better understand the role of water and lava in changing the Martian landscape.

Written by: Laszlo Kestay  (30 May 2012)

This is a stereo pair with ESP_025802_1960.
 
Acquisition date
17 March 2012

Local Mars time
15:11

Latitude (centered)
15.727°

Longitude (East)
165.867°

Spacecraft altitude
280.4 km (174.3 miles)

Original image scale range
28.6 cm/pixel (with 1 x 1 binning) so objects ~86 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
12.1°

Phase angle
35.0°

Solar incidence angle
46°, with the Sun about 44° above the horizon

Solar longitude
84.4°, Northern Spring

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  25.5°
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ANAGLYPHS
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ADDITIONAL INFORMATION
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HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
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Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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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-Caltech/UArizona

POSTSCRIPT
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. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.