| ISS030 Earth Sciences and Image Analysis Photographic Highlights |
| TOP PICKS |
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| ISS030-E-162344 |
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| Ice Floes Along the Kamchatka Coastline: The vantage point
from orbit on the International Space Station (ISS) frequently
affords astronauts with the opportunity to observe processes that are
impossible to see on the ground. The winter season blankets the Kamchatka
Peninsula of Russia in snow, but significant amounts of sea ice
can also form and collect along the Pacific coastline. As ice floes
grind against each other, they produce smaller floes that can be
moved by wind and currents. The irregular southeastern coastline of Kamchatka provokes large, circular eddy currents to spin off from the main southwestward-flowing Kamchatka current. Three such eddies are highlighted by surface ice floe patterns at image center. The patterns are very difficult (and dangerous) to navigate in an ocean vessel. While the floes may look thin and delicate from the ISS vantage point, even the smaller ice chunks are several meters across. White clouds (image top right) are distinguished from the sea ice and snow cover by their high brightness and discontinuous nature. The Kamchatka Peninsula also hosts many currently and historically active stratovolcanoes. Kliuchevskoi Volcano, the highest in Kamchatka (summit elevation 4,835 meters) and one of the most active, had its most recent confirmed eruption in June 2011. Meanwhile, Kronotsky Volcano—a “textbook” symmetrical cone-shaped stratovolcano—last erupted in 1923. |
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This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate. Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." . |
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