Follow this link to skip to the main content NASA Jet Propulsion Laboratory California Institute of Technology JPL HOME EARTH SOLAR SYSTEM STARS & GALAXIES SCIENCE & TECHNOLOGY BRING THE UNIVERSE TO YOU JPL Email News RSS Mobile Video
JPL Banner
Mars Reconnaissance Orbiter
Home Participate
MULTIMEDIA

Images

Image Gallery


read the article 'Erisa Hines'
03.30.2016 Erisa Hines
read the article 'Buzz Aldrin'
03.30.2016 Buzz Aldrin
read the article 'Women in Science'
02.12.2016 Women in Science
read the article 'Wind at Work'
02.10.2016 Wind at Work
read the article 'Avalanche Ho!'
09.30.2015 Avalanche Ho!
read the article 'Icy Wonderland'
05.11.2015 Icy Wonderland
read the article 'South Pole Spiders'
03.27.2015 South Pole Spiders
read the article 'A Smile a Day....'
03.27.2015 A Smile a Day....
This image shows an outcrop of the south polar layered deposits (SPLD). The SPLD consist of layers of ice and admixed dust and make up the bulk of the dome-shaped Planum Australe.

Planum Australe is, in some ways, analogous to the Antarctic ice sheet. Troughs and scarps carved into Planum Australe by erosional processes have exposed SPLD layers within it. In this image, the darkest area at the bottom of the image is the bottom of the scarp. Except for the dark material at the bottom of the slope, much of the changes in brightness in this image are due to the lighting angle, the direction from which the sun is illuminating the slope.

Much like ice cores from Greenland and Antarctica and deep sea sediment cores, the icy-dusty layers of the SPLD may have preserved a record of recent Mars climate history. Understanding that record is a complex process and involves, among many other types of analyses, examining the differences and similarities in appearance between each layer and attempting to classify layer types. This image shows nice examples of different layer textures. But what is especially interesting about this image are the faults cutting through the layers. These faults appear as diagonal lines, on either side of which, the layering is offset. Note that the faults are not clean, single lines, but appear in long groups of short lines.

What caused these faults is still under investigation, but, among other possibilities, they could be related to an earlier time when temperatures were higher and the ice was flowing at a much faster rate than it is today.
04.30.2009

Troughs and Scarps in Planum Australe

This image shows an outcrop of the south polar layered deposits (SPLD). The SPLD consist of layers of ice and admixed dust and make up the bulk of the dome-shaped Planum Australe.

Planum Australe is, in some ways, analogous to the Antarctic ice sheet. Troughs and scarps carved into Planum Australe by erosional processes have exposed SPLD layers within it. In this image, the darkest area at the bottom of the image is the bottom of the scarp. Except for the dark material at the bottom of the slope, much of the changes in brightness in this image are due to the lighting angle, the direction from which the sun is illuminating the slope.

Much like ice cores from Greenland and Antarctica and deep sea sediment cores, the icy-dusty layers of the SPLD may have preserved a record of recent Mars climate history. Understanding that record is a complex process and involves, among many other types of analyses, examining the differences and similarities in appearance between each layer and attempting to classify layer types. This image shows nice examples of different layer textures. But what is especially interesting about this image are the faults cutting through the layers. These faults appear as diagonal lines, on either side of which, the layering is offset. Note that the faults are not clean, single lines, but appear in long groups of short lines.

What caused these faults is still under investigation, but, among other possibilities, they could be related to an earlier time when temperatures were higher and the ice was flowing at a much faster rate than it is today.

Image Credit: NASA/JPL-Caltech/Univ. of Arizona

All Images

HiRISE Flickr Photostream

HiRISE Flickr Wallpaper

HiRISE Flickr 4K

HiRISE Flickr 8K

USA.gov
PRIVACY     FAQ     SITEMAP     FEEDBACK     IMAGE POLICY