Fans of the Arctic
Earth Observatory Science Earth Observatory Fans of the Arctic Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life on Earth Human Dimensions Natural Events Oceans Remote Sensing Technology Snow & Ice Water More Content Collections Global Maps World of Change Articles Earth Matters Blog Blue Marble: Next Generation EO Kids Mission: Biomes About About Us Subscribe 🛜 RSS Contact Us Search Alluvial fans form along a braided river channel on Severny Island in the Russian Arctic in an image acquired on August 1, 2025, by the OLI (Operational Land Imager) on Landsat 9 . NASA Earth Observatory/Lauren Dauphin Editor’s Note: Today’s story is the answer to the July Puzzler . Call it an alluvial face-off. On the southern end of Severny Island in the Russian Arctic, rivers rush down from rugged terrain flanking a broad valley. Upon reaching flatter ground,...