Small Impacts at Slope Streak Apexes
Small Impacts at Slope Streak Apexes
PSP_003259_1850  Science Theme: Fluvial Processes
This image shows some dark slope streaks where small impact craters are visible at their apexes. These craters have little splashes of dark ejecta, which indicate that they were throwing up the same dark-toned material that the slope streak has revealed.

These dark slope streaks and the medium-toned one to the left show longitudinal ridges that are indicators of the flow of material during the slope streak event. Older, almost completely faded slope streaks can be seen to source off of the crater in the upper right corner of this portion of the image.

Written by: Ross A. Beyer  (24 October 2007)
Acquisition date
07 April 2007

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
271.4 km (168.7 miles)

Original image scale range
54.3 cm/pixel (with 2 x 2 binning) so objects ~163 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
57°, with the Sun about 33° above the horizon

Solar longitude
214.6°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  345.9°
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

Black and white
map-projected   (1042MB)

IRB color
map-projected   (483MB)

Black and white
map-projected  (629MB)
non-map           (584MB)

IRB color
map projected  (242MB)
non-map           (534MB)

Merged IRB
map projected  (1131MB)

Merged RGB
map-projected  (1045MB)

RGB color
non map           (500MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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’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.