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Measuring Water Depth from the International Space Station
Published January 12, 2004
Looking out the window of the International Space Station, astronauts often take the time to admire and photograph tropical islands and coral reefs. From an altitude of 400 kilometers and with only a digital camera as a tool, it seems impossible to make detailed measurements of the depth of underwater features. However, a new technique developed by NOAA scientists has done just that—plotted the depths of lagoon features at Pearl and Hermes Reef, northwest Hawaii, using digital astronaut photography from the International Space Station (ISS).
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The Many Faces of Mount Everest
Published December 29, 2003
Over the years, astronauts have used various viewing angles and lenses to capture the many faces of Everest. Differing seasons and illumination allow for very different, but always spectacular perspectives. The astronauts on the International Space Station obtained this view of Mt. Everest in late November 2003.
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Rio de la Plata
Published December 8, 2003
Rio de la Plata is the muddy estuary of the Paraná and Uruguay Rivers, and forms part of the border between Argentina and Uruguay. The rich estuary supports both capital cities of Buenos Aires and Montevideo. This image provides a snapshot of the complicated mixing in the Rio de la Plata between the fresh river waters and the water of the South Atlantic.
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Fall Colors Portland, Maine
Published December 1, 2003
The ISS-7 crew of the International Space Station enjoyed a bird’s-eye view of New England’s fall colors on a fine October morning in 2003. The fall foliage of Baxter Woods Park in Portland, Maine, shows the reds and browns of a mix of trees, including maple, old-growth white oaks, and hemlock. Nearby Evergreen Cemetery is highlighted by the brilliant red and yellow leaves of maple trees. Surrounded by the cityscape of Portland, the wooded cemetery is known for both historic headstones and wooded trails.
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Fire Smog in the Central Valley of California
Published November 24, 2003
The smoky remnants of October’s devastating fires still filled the southern California Central Valley on November 2, 2003. This “upside down” digital photograph was taken from the International Space Station from a position over the Pacific Northwest looking southward toward southern California. At the time this image was acquired, the fires had finally been brought under control, but ash and smoke remained trapped in the atmosphere above the valley, a bowl of land ringed by the Sierra Nevada Mountains to the east (left) and the Coast Range Mountains to the west (right).
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Boston
Published November 17, 2003
This image provides a good bird’s-eye view of the center of the city, including famous colonial and independence locations extending from Boston Common to the North End.
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Islamabad and Rawalpindi, Pakistan
Published November 3, 2003
Two capital cities in Pakistan lie next to one another but display land use patterns that are entirely different. Islamabad, with a population of 901,000 (ca. 1998) boasts a master-planned rectangular street pattern nestled against the Margala Hills (top left). The larger Rawalpindi (population 1,406,214 in 1998) lies to the south on the Soan River. Islamabad has grown rapidly since construction began in 1961. It was created as a new administrative district in Pakistan to be the home of government, the supreme court, and the diplomatic corps. The great white building of the Faisal Mosque appears on the northern margin of the city. By contrast with orthogonal Islamabad, Rawalpindi displays the radial land transportation pattern of many cities with a river flowing through the city center. City blocks are small and growth less controlled than in its newer neighbor.
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Fires in Southern California
Published October 27, 2003
Fires in the San Bernadino Mountains, driven by Santa Ana winds, burned out of control Sunday morning when these images were taken from the International Space Station (ISS) at roughly 11 a.m. PST. Thick yellow smoke blows south, blanketing the valley below. This photgraph, looking southeast, captures the smoke pall as the ISS approached and passed over the region. Lake Arrowhead is the reservoir near the left edge of the photograph.
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Honolulu
As the Expedition 7 crew on the International Space Station was set to come home to Earth, crew member Ed Lu was inspired to photograph his hometown, Honolulu, during an overpass. Honolulu is striking for the way it is bound by surrounding geography. Built-up fingers of the city extend northeast onto the steep volcanic slopes and surround the volcanic craters of Punchbowl and Diamond Head, leaving undeveloped only parklands and the steepest ridges. They are both tuff cones that formed as magma from the erupting volcano came in contact with ground water at a time when sea levels were higher than they are now. As the water turned to steam, it caused an explosion that formed a hill of ash with a broad crater in the center.
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Coastal Dunes, Brazil
Published October 20, 2003
The area shown here (10 kilometers across) is a small part of the dune field which is now protected as the Len&ccelde;óis Maranhenses National Park, on Brazil’s north coast, about 700 kilometers east of the Amazon River mouth. Persistent winds blow off the equatorial Atlantic Ocean onto Brazil from the east, driving white sand inland from the 100 kilometer stretch of coast (upper margin of the image), to form a large field of dunes. The strongly regular pattern of these dunes is a common characteristic of dune fields. The basic shape of each sand mass, repeated throughout the view, is a crescent-shaped dune. In an area with a rich supply of sand such as coastal Brazil, individual crescents coalesce to form entire chains many miles long. The wind strength and supply of sand are sufficient to keep the dunes active, and thus free of vegetation, despite 1500 mm (60 inches) of rainfall annually. The dark areas between the white dunes are fresh water ponds that draw fisherman to this newly established park.
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Toquepala Copper Mine, Southern Peru
Published October 13, 2003
The rugged, mineral-rich Andes support some of the world’s biggest mines (gold, silver, copper, and more). This image looks down the bullseye of Peru’s Toquepala copper mine, a steep sided and stepped open-pit mine.
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Johannesburg, South Africa
Published October 6, 2003
The center of Johannesburg is the fine-grained pattern (created by shadows cast from the high rise buildings in the city) in the center of this mosaic. On the southern fringe of Johannesburg is a line of light colored, angular patches stretching across the scene. These patches are the great “mine dumps,” the crushed rock that remains after gold extraction from numerous gold mines.
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