Anaglyph, Manicouagan Crater, Quebec, Canada #2778


#2778 Anaglyph, Manicouagan Crater, Quebec, Canada by JVPD
Manicouagan Crater is one of the world's largest and oldest known impact craters and perhaps the one most readily apparent to astronauts in orbit. The age of the impact is estimated at 214 million years before present. Since then erosion has removed about one kilometer (0.6 miles) of rock from the region and has created a topographic pattern that follows the structural pattern of the crater. A ring depression (prominently seen as dark gray) encloses a central peak. The ring depression now hosts the Manicouagan Reservoir and so appears as a distinct ring lake to astronauts and as a smooth and flat feature in this topographic visualization. A fine pattern of topographic striations trending south-southeast, most prominent within the crater itself, indicates the flow direction of glaciers that covered this area during the last ice age. This anaglyph is derived entirely from the SRTM elevation model. First a gray image was created that uses image brightness to represent a mix of topographic height (higher elevations are brighter) and topographic orientation (northern slopes are brighter). The stereoscopic effect was then created by generating two differing perspectives, one for each eye. When viewed through special glasses, the result is a vertically exaggerated view of the Earth's surface in its full three dimensions. Anaglyph glasses cover the left eye with a red filter and cover the right eye with a blue filter. Total topographic relief from the ring lake level to the central crater peak is about 600 meters (2000 feet).

Photo Credit: NASA/JPL-Caltech [0003-0701-0102-3340] by 0003

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Keywords

anaglyph, canada, crater, craters, earth science, geography, jpl, manicouagan crater, manicouagan reservoir, nasa, quebec