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Sunglint Features, Lake Erie, United States
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Published June 12, 2006
Sunglint results when the Sun’s light bounces off the water’s surface and into the satellite sensor or camera. In this astronaut photograph, taken near noon on May 28th, 2006, sunglint highlights features on the surface of Lake Erie, about 50 kilometers (30 miles) west of Cleveland, Ohio. The angular water bodies along the river are likely marinas. The main part of the image shows numerous ship wakes in the zone of partial glint around the disk of the Sun’s reflection point. The wakes radiate from the mouth of the Vermilion River, with many of them heading northwest (towards the lower-right corner) in the direction of Detroit, Michigan.
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Central Phoenix Metro Area, Arizona
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Published June 5, 2006
The Phoenix, Arizona, metropolitan area is the largest in the southwestern United States. This astronaut photograph of the central metro region includes the boundary area between three of the municipalities included in the conurbation of Phoenix: the cities of Phoenix (left), Tempe (center and lower right), and Scottsdale (upper right).
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Wave Sets and Tidal Currents, Gulf of California
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Published May 29, 2006
Sunglint (reflection of sunlight from the water surface directly back to the camera or satellite sensor) off the Gulf of California gives the water a silver-gray appearance rather than the normal azure color in this astronaut photograph. The sunglint allows us to see several active features which wouldn’t be visible otherwise. The image captures a moment in time displaying very active and complex ocean wave dynamics. In this view of Punta Perihuete, Mexico, we can see three major features: biological orman-made oils floating on the surface; the out-going tidal current; and complex wave patterns. The oils on the surface are recognizable as light-grey, curved and variable-width streamers shaped by the local winds and currents. Plankton, fish, natural oil seeps, and boats dumping their bilges are all potential sources for these oils.
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Activity at Cleveland Volcano, Aleutian Islands
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Published May 25, 2006
ISS flight engineer Jeff Williams was the first to witness and then report an eruption at this Alaskan volcano in 2006.
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