Wednesday, 4 November 2015

Summary of West Hellas region

Here is a summary map of another region of Mars from my MSc dissertation work, this time the region to the west of Hellas Planitia.

Elevation (MOLA) blended with underlying MOC image mosaic.


All tiles in this region except h2210 use this colour ramp for elevation


MOLA elevation only.

MOLA elevation blended with hillshade.



Preview of a single HRSC tile h2210

This is located to the SW of Hellas Planitia, around 47°E, 48°S. The elevations within this tile range from -4542 to 1064m relative to datum.

Elevation blended with nadir image layer, a single Souness object is visible, but...
The classifier predicts substantial areas, which are judged in a Bayesian sense to be similar topographically, taking account of elevation, slope, abs. aspect away from N, cross-sectional, and longitudinal curvature, to the head areas (red) and GLF extents (blue).

The Mars Express HRSC tile's nadir image.

 




Using Google Earth to view Mars Reconnaisance orbiter CTX images of Souness 1140:


The region to the SW of Souness 1140 has HiRISE coverage including a 3D anaglyph if you have a pair of red/blue 3D glasses handy:

Link to University of Arizona HiRISE page for this image.

Crater at 34°E, 47°S


There are many craters in the areas west of Hellas that have a system of dunes within. This example also shows several Souness GLFs on the north wall:

Seven Souness GLFs are found here, within HRSC tile h2441. There is a HiRISE anaglyph of the dune system.

HSRC nadir image.
Bayesian classifier results.

This is a colourised representatio of the topography that may be difficult to interpret, but I thought I would present it to show a little of what is being done with the derived topographic variables. In this case, I have made a RGB false colour rendering, with red mapped to slope, green mapped to cross-sectional curvature, and blue mapped to longitudinal curvature.


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