image: This is an impact crater with abundant recurring slope lineae (RSL) at 41.6°S, 202.3°E in Newton Basin. (A) is the full HiRISE PSP_005943_1380; arrows point to some concentrations of RSL, and the black box locates the four blowups of orthorectified images (13) showing RSL (dark lines) in the late summer of MY 28 (12) (B), faded by the next very early spring (C), then gradually darkening and reforming in the spring (D) and summer (E) of MY 30. The RSL are located on steep north-to-west–facing slopes associated with bedrock outcrops, often in alcoves. Each image was given a minimum-maximum stretch so that shadows are black and the brightest spots are white. This image relates to an article that appeared in the Aug. 5, 2011, issue of Science, published by AAAS. The study, by Dr. Alfred S. McEwen of the University of Arizona in Tuscon, Ariz., and colleagues was titled, "Seasonal Flows on Warm Martian Slopes." view more
Credit: Image courtesy of Science/AAAS