Wednesday, 4 November 2015

Preview of the SE highlands of Mars

As I wrote in the last post, I am in the process of dividing up my QGIS projects covering the Mars Express HRSC DTM tiles that cover areas where Colin Souness found 'glacier-like forms' in his PhD and research paper.

I now come to the southeastern highlands:

Again, I use the equicylindrical projection optimised for 40° latitude, units are metres.


The elevation colour ramp for the underlying backdrop of the MOLA/MGS topography. In the above rendering this is blended with the Mars Orbiter Camera image mosaic.

In this region, I am able to use a single colour ramp for all of the various HRSC DTM tiles.

The MOLA elevation alone.

The MOLA elevation, blended with hillshade.


There are relatively few Souness GLFs in this region,found in crater walls. There are a number of these that look quite interesting - where within the same crater part of it looks glacial, and other parts have terrain produced by erosion by liquid.

Crater at 125°E, 41°S 

Several Souness GLFs, including one covered by an anaglyph ESP_022494_1385.

The classifier results (blue for topographic similarity to 'extent' areas, and red for topohgraphic similarity to 'head' area) overplotted on the HRSC nadir image.


Crater at 126°E, 44°S

Several Souness GLFs and other areas showing flow features. Souness 928 appears to have its 'head' and 'terminus' locations interchanged in the catalog.

Classifier results.

Crater at 141°E, 40°S

Souness 915 appears in the northern wall of the crater, and fluvial-like channels in the south wall.

A closer look at the north wall.

The classifier results.
The channels visible in the southern wall.

Classifier results.

Crater at 169°E, 45°S

Four Souness GLFs are found in this crater.

With the classifier results.

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