The Side of Chasma Boreale
NASA/JPL/UArizona
The Side of Chasma Boreale
ESP_037056_2650  Science Theme: Climate Change
Chasma Boreale is the 560-kilometer long valley that cuts through the Northern Polar layered deposits of Mars.

The section that it exposes show fine scaled layering and a major unconformity, where the azimuth of the beds changes markedly. This is is characteristic of the polar layered deposits. The formation of the unconformity suggests a time when the lower sediments were being eroded rather than deposited. The extracted image shows a roughly 4 x 4 kilometer area across the unconformity.

The polar layered deposits are weakly cemented rocks, and so lying over the scarps you can see lines of mass wasting where dust and sand size particles have slumped downhill. This image is part of a planned stereo pair, and was in the late summer in the Northern Hemisphere of Mars.

Comparing images like this to those taken in previous years and in different seasons allows a more accurate understanding of current surface processes on the Red Planet.



Written by: John Bridges (audio: Tre Gibbs)  (13 August 2014)

This is a stereo pair with ESP_036515_2650.
 
Acquisition date
22 June 2014

Local Mars time
14:50

Latitude (centered)
85.017°

Longitude (East)
342.497°

Spacecraft altitude
319.5 km (198.6 miles)

Original image scale range
33.4 cm/pixel (with 1 x 1 binning) so objects ~100 cm across are resolved

Map projected scale
25 cm/pixel

Map projection
Polarstereographic

Emission angle
17.4°

Phase angle
60.0°

Solar incidence angle
74°, with the Sun about 16° above the horizon

Solar longitude
150.1°, Northern Summer

For non-map projected images
North azimuth:  102°
Sub-solar azimuth:  323.5°
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   (1554MB)

IRB color
map-projected   (870MB)

JP2 EXTRAS
Black and white
map-projected  (631MB)
non-map           (651MB)

IRB color
map projected  (226MB)
non-map           (519MB)

Merged IRB
map projected  (383MB)

Merged RGB
map-projected  (353MB)

RGB color
non map           (504MB)
ANAGLYPHS
Map-projected, reduced-resolution
Full resolution JP2 download
Anaglyph details page

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.