Clouds in the Northern Tempe Terra (Released 2 May 2002)

Scaled Image

Image Credit: NASA/JPL/ASU

About this image

This THEMIS visible image shows a region in northern Tempe Terra. Patchy water-ice clouds cover portions of the low-lying canyon at the top (north) of this image. Further south the atmosphere is clear and the knobby or 'scabby' plains that are typical of many mid-latitude regions on Mars can be seen. These plains appear to mantle and modify a pre-existing surface, burying the older cratered terrain. This mantling layer has itself been modified to produce a pitted, knobby surface. The large mesa seen in this image has unusual deposits of material that occur preferentially on the cold, north-facing slopes. These deposits are seen frequently at mid-northern and southern latitudes, and have a distinct, rounded boundary that typically occurs at approximately the same distance below the ridge crest. It has been suggested that these deposits once draped the entire surface and have since been removed from all but the north-facing slopes. The presence of water ice in these layers is a likely possibility to account for their preservation only on the colder surfaces. The south-facing slopes lack this mantling material, and show clear evidence for layering in the rock units that form the mesa.

Please see the THEMIS Data Citation Note for details on crediting THEMIS images. 


Image ID: 
V01251011 (View data in Mars Image Explorer)
2002-03-27 07:22
Thu, 2002-05-02
1024 pixels (19 km)
3648 pixels (69 km)
0.019161 km/pixel
0.0193 km/pixel


PNG | JPEG (high res) | JPEG (reduced res) | PDF | TIFF