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Terra Sirenum and Southern Tharsis - Mars Express
Mars Express HRSC image of the Martian surface, taken from a vantage point high over the Terra Sirenum region of Mars' southern highlands.
The relatively young (< 2 billion years old) surface Tharsis volcanic plateau is the light orange, lightly-cratered surface at left. The southern area of this region is dominated by the 20 km high Arsia Mons volcano (here sporting a seasonal orographic cloud streak) and extremely long lava flows associated with the volcano. At center is Terra Sirenum, which hosts large interconnected basins that may have once contained lakes. At right is the south polar cap. The terrain in this region is more subdued as it has been heavily eroded and smoothed by eons of glacial movement and freeze-thaw cycles. A thick cloud of water vapor, dust, and CO2 hangs over the pole as the late spring heat evaporates the ice cap.
This image was taken during Mars Express' 18,627th orbit of Mars, September 21, 2018. It combines images taken through the HRSC camera's IR, green and blue filters to produce a natural color image.
Image Credit: ESA/DLR/FU Berlin/J. Cowart, CC BY-SA 3.0 IGO
Terra Sirenum and Southern Tharsis - Mars Express
Mars Express HRSC image of the Martian surface, taken from a vantage point high over the Terra Sirenum region of Mars' southern highlands.
The relatively young (< 2 billion years old) surface Tharsis volcanic plateau is the light orange, lightly-cratered surface at left. The southern area of this region is dominated by the 20 km high Arsia Mons volcano (here sporting a seasonal orographic cloud streak) and extremely long lava flows associated with the volcano. At center is Terra Sirenum, which hosts large interconnected basins that may have once contained lakes. At right is the south polar cap. The terrain in this region is more subdued as it has been heavily eroded and smoothed by eons of glacial movement and freeze-thaw cycles. A thick cloud of water vapor, dust, and CO2 hangs over the pole as the late spring heat evaporates the ice cap.
This image was taken during Mars Express' 18,627th orbit of Mars, September 21, 2018. It combines images taken through the HRSC camera's IR, green and blue filters to produce a natural color image.
Image Credit: ESA/DLR/FU Berlin/J. Cowart, CC BY-SA 3.0 IGO