Bouncing Boulders
NASA/JPL/University of Arizona
Bouncing Boulders
PSP_001385_1985  Science Theme: Impact Processes
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Most debris on crater walls slides straight downhill. In this HiRISE image we see examples of boulders that have bounced downhill, not necessarily vertically.

A prominent example looks like a dotted line from the top of the crater wall where the boulder took off to the crater floor where it finally came to rest.

Numerous boulders have slid partway down toward the crater floor, which is covered by sand dunes. This is actually a small crater (approximately 1 kilometer wide) within an unnamed but much larger approximately 30 kilometer crater.

Written by: Candy Hansen   (23 December 2009)

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Acquisition date
12 November 2006

Local Mars time:
15:29

Latitude (centered)
18.493°

Longitude (East)
64.971°

Range to target site
278.0 km (173.8 miles)

Original image scale range
from 27.8 cm/pixel (with 1 x 1 binning) to 111.3 cm/pixel (with 4 x 4 binning)

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
7.0°

Phase angle:
42.8°

Solar incidence angle
50°, with the Sun about 40° above the horizon

Solar longitude
134.2°, Northern Summer

North azimuth:
97°

Sub-solar azimuth:
13.6°
JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (329MB)

IRB color
map-projected   (253MB)

JP2 EXTRAS
Black and white
map-projected  (127MB)
non-map           (109MB)

IRB color
map projected  (84MB)
non-map           (226MB)

Merged IRB
map projected  (102MB)

Merged RGB
map-projected  (105MB)

RGB color
non map           (221MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images



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:
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.