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Summit Crater of Mauna Loa
Mauna Loa is the largest volcano on our planet—the summit elevation is 4,170 m (over 13,600 ft), but the volcano’s summit rises 9 km above the sea floor. The sharp features of the summit caldera and lava flows that drain…
Nyamuragira Volcano Erupts
large images False Color (171 KB JPEG) True Color (142 KB JPEG) Nyamuragira volcano erupted on July 26, 2002, spewing lava high into the air along with a large plume of steam, ash, and sulfur dioxide. The 3,053-meter (10,013-foot) volcano is located…
Three Gorges Dam, China
The above image shows a 60-kilometer stretch of the Yangtze River in China. In the image, one can see the Xiling Gorge, which is the easternmost of the three big gorges along the Yangtze. The construction site of the Three…
Significant Event Report for Week Ending 7/26/2002
Cassini Significant Event Report For Week Ending 07/26/02 The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Wednesday, July 24. The Cassini spacecraft is in an excellent state of health and is operating normally. Information on…
Distinguishing Clouds from Ice over the East Siberian Sea, Russia
As a consequence of its capability to retrieve cloud-top elevations,stereoscopic observations from the Multi-angle Imaging SpectroRadiometer (MISR)can discriminate clouds from snow and ice. The central portion of Russia’s EastSiberian Sea, including one of the New Siberian Islands, Novaya Sibir, areportrayed…
Hyacinths Choke the Rio Grande
These images acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), flying aboard NASA’s Terra satellite, demonstrate the potential of satellite-based remote sensors to monitor infestations of non-native plant species. These images show the vigorous growth of water…
Bombay, India
Formerly known as Bombay, the city of Mumbai is situated on India’s west coast, on the Arabian Sea, roughly 500 km (310 miles) south of the Tropic of Cancer. Its large harbor and ideal location facing Africa, Europe, and the…
Showdown in the Rio Grande
ASTER satellite images have been used to find and track infestations of water hyacinths in the Rio Grande in Texas, as well as to monitor the success of plant eradication techniques.
Kilimanjaro
Portions of Kenya and Tanzania, Africa, can be seen in this image. The peak of Kilimanjarois on the right; the mountain is flanked by the plains of Amboseli National Park to the northand the rugged Arusha National Park to the…
Salt Ponds, South San Francisco Bay
The red and green colors of the salt ponds in South San Francisco Bay are brilliant visual markers for astronauts. The STS-111 crew photographed the bay south of the San Mateo bridge in June, 2002.
Twin Convergence Zones
NASA’s QuikSCAT satellite has confirmed a 30-year old largely unproven theorythat there are two areas near the equator where the winds converge year afteryear and drive ocean circulation south of the equator. By analyzing winds,QuikSCAT has found a year-round southern…
Manaus, Brazil
The above image was acquired by the Advanced Spaceborne Thermal Emissions and Reflection Radiometer (ASTER) aboard NASA’s Terra satellite and shows the junctions of the Amazon and Rio Negro rivers in Manus, Brazil. The Rio Negro flows 2300 kilometers (1400…
Significant Event Report for Week Ending 7/19/2002
Cassini Significant Event Report For Week Ending 07/19/02 The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Tuesday, July 17. The Cassini spacecraft is in an excellent state of health and is operating normally. Information on…
A Hazy Day in Mexico City
Mexico City has one of the world’ s most serious air pollution problems.The city is located atop a high plain at an altitude of 2200 meters, and issurrounded on three sides by mountains and snow-capped volcanoes. Since incidentsolar radiation does…
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