Bright Wind Streak
NASA/JPL/UArizona
Bright Wind Streak
PSP_005109_1770  Science Theme: Sedimentary/Layering Processes

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This HiRISE observation shows an albedo change associated with an impact crater at the northeast edge of the image. (Albedo measures how much light is reflected by a surface. An albedo of 0 means that no light is reflected). A streak of light material extends away from the crater. This is a wind streak, so called since it results from the interaction of wind and topography.

Wind streaks are common in the area of this image as well as other areas on Mars. They form when dust is preferentially eroded or deposited downwind of a crater or other feature due to its effect on the wind. As such, they are useful indications of wind directions on the Martian surface, an important constraint on modeling the weather of the planet.

Some striations in the image are artifacts due to slight differences between the camera detectors.

Written by: Colin Dundas  (19 September 2007)
 
Acquisition date
29 August 2007

Local Mars time
14:21

Latitude (centered)
-3.022°

Longitude (East)
287.109°

Spacecraft altitude
262.9 km (163.4 miles)

Original image scale range
26.3 cm/pixel (with 1 x 1 binning) so objects ~79 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
3.8°

Phase angle
35.2°

Solar incidence angle
39°, with the Sun about 51° above the horizon

Solar longitude
304.4°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  335.6°
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   (1469MB)

IRB color
map-projected   (584MB)

JP2 EXTRAS
Black and white
map-projected  (696MB)
non-map           (941MB)

IRB color
map projected  (328MB)
non-map           (704MB)

Merged IRB
map projected  (329MB)

Merged RGB
map-projected  (334MB)

RGB color
non map           (668MB)
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
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.