HiRISE | Slope Streaks in Unnamed Crater in Amazonis Region (PSP_006773

NASA/JPL-Caltech/UArizona

Slope Streaks in Unnamed Crater in Amazonis Region
PSP_006773_1735 Science Theme: Other

WALLPAPER
800
1024
1152
1280
1440
1600
1920
2048
2560

This image shows the eastern edge of a double crater near the equator. The featured crater overlaps a crater to the west (left). Not visible in the image, the ejecta of the craters end in ramparts, suggesting that ice was present when both craters formed.

Since the craters are so degraded—visible in the image in the form of terraces and the muted crater rim—it is clear that they formed a long time ago.

The scene is very dusty and abundant slope streaks are present. Slope streaks are thought to be small-scale dust avalanches that usually are dark when they form but fade into the background over time.

Near the top right of the image is a small cluster of craters that look to be about the same age. The cluster might have formed when a projectile from space or ejecta from another impact broke apart in the atmosphere before hitting the surface.

Written by: Kelly Kolb (11 June 2008)

Acquisition date
06 January 2008

Local Mars time
14:33

Latitude (centered)
-6.369°

Longitude (East)
215.780°

Spacecraft altitude
265.4 km (165.0 miles)

Original image scale range
from 26.6 cm/pixel (with 1 x 1 binning) to 53.1 cm/pixel (with 2 x 2 binning)

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.1°

Phase angle
40.1°

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

Solar longitude
13.5°, Northern Spring

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 22.0°

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   (1527MB)

IRB color
map-projected   (788MB)

JP2 EXTRAS
Black and white
map-projected (712MB)
non-map           (553MB)

IRB color
map projected (277MB)
non-map           (730MB)

Merged IRB
map projected (416MB)

Merged RGB
map-projected (401MB)

RGB color
non map           (748MB)

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-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.