Post by Paddy by Grace on Feb 20, 2010 0:48:19 GMT -7
Amazing satellite image - Dual erupting volcanoes in Kamchatka, Russia
www.examiner.com/x-25803-Natural-Disasters-Examiner~y2010m2d18-Amazing-satellite-image--Dual-erupting-volcanoes-in-Kamchatka-Russia
NASA satellites have captured images of a rare event – two neighboring volcanoes erupting at the same time. The images taken on February 13th clearly show plumes coming from snow-covered Klyuchevskaya Volcano in the north and Bezymianny Volcano to the south.
The volcanoes reside on the Kamchatka Peninsula in Russia, an active volcanic area much like the rest of the Pacific Ring of Fire.
Klyuchevskaya, also called Kliuchevskoi, is a monstrous mountain reaching 15,860 feet (4,835 meters) – the tallest volcano in Kamchatka. According to NASA, it has erupted more than 80 times in the last 300 years. In the fall of 1994 it shot a plume of ash more than one mile high and was easily seen by astronauts on the Space Shuttle Endeavor.
Bezymianny, at only 9,455 feet (2,882 meters), was imaged in by NASA back in November during a prior eruption. It was thought to be extinct until it erupted from 1955 to 1956. Prior to that, it had experienced a period of 1,000 years of dormancy. The 1956 eruption was comparable in size to the Mount Saint Helens eruption in 1980 and resulted in a horseshoe shaped crater that has since been filled by other, smaller eruptions and pyroclastic flows.
Volcanoes Erupt Simultaneously on Kamchatka (NASA
Neighboring volcanoes on Russia’s Kamchatka Peninsula acted up at the same time in mid-February 2010. Klyuchevskaya Volcano in the north and Bezymianny Volcano in the south both sent plumes skyward over a snowy landscape. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image on February 13, 2010.
Low-angled sunlight illuminates the southern slopes of Kamchatka’s rugged landscape, as well as the southern sides of both volcanic plumes. The plumes’ light color suggests that, of the visible material in each plume, steam predominates over volcanic ash. Both plumes cast shadows toward the northwest.
Reaching a height of 4,835 meters (15,860 feet), Klyuchevskaya (also Kliuchevskoi) Volcano is both the tallest and most active volcano on Kamchatka. It is a stratovolcano—a steep-sloped, conical structure composed of alternating layers of solidified ash, hardened lava, and rock fragments ejected by earlier eruptions. On February 11, 2010, the Kamchatka Volcanic Eruption Response Team (KVERT) reported above-background seismic activity at Klyuchevskaya Volcano, including gas and/or steam plumes reaching 6 kilometers (20,000 feet) above sea level, lava flows, and Strombolian eruptions—intermittent explosions or fountains of rock—roughly 300 meters (1,000 feet) above the volcano’s summit.
Dwarfed by its neighbor, Bezymianny reaches 2,882 meters (9,455 feet) above sea level. Compared to the volcano immediately to the north, it releases a smaller, thinner plume. Like Klyuchevskaya, Bezymianny is also a stratovolcano. On February 11, KVERT reported that Bezymianny was releasing plumes that could affect low-flying aircraft, and it might have experienced a moderate explosive event February 5–6, 2010. More significant seismic activity at Klyuchevskaya, however, obscured data from Bezymianny.
Kamchatka lies along the Pacific Ring of Fire—a seismically active area encircling the Pacific Ocean. Both Klyuchevskaya and Bezymianny were intermittently active in late 2009 and early 2010.
NASA Earth Observatory image created by Jesse Allen, using data provided courtesy of NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team. Caption by Michon Scott.
www.examiner.com/x-25803-Natural-Disasters-Examiner~y2010m2d18-Amazing-satellite-image--Dual-erupting-volcanoes-in-Kamchatka-Russia
NASA satellites have captured images of a rare event – two neighboring volcanoes erupting at the same time. The images taken on February 13th clearly show plumes coming from snow-covered Klyuchevskaya Volcano in the north and Bezymianny Volcano to the south.
The volcanoes reside on the Kamchatka Peninsula in Russia, an active volcanic area much like the rest of the Pacific Ring of Fire.
Klyuchevskaya, also called Kliuchevskoi, is a monstrous mountain reaching 15,860 feet (4,835 meters) – the tallest volcano in Kamchatka. According to NASA, it has erupted more than 80 times in the last 300 years. In the fall of 1994 it shot a plume of ash more than one mile high and was easily seen by astronauts on the Space Shuttle Endeavor.
Bezymianny, at only 9,455 feet (2,882 meters), was imaged in by NASA back in November during a prior eruption. It was thought to be extinct until it erupted from 1955 to 1956. Prior to that, it had experienced a period of 1,000 years of dormancy. The 1956 eruption was comparable in size to the Mount Saint Helens eruption in 1980 and resulted in a horseshoe shaped crater that has since been filled by other, smaller eruptions and pyroclastic flows.
Volcanoes Erupt Simultaneously on Kamchatka (NASA
Neighboring volcanoes on Russia’s Kamchatka Peninsula acted up at the same time in mid-February 2010. Klyuchevskaya Volcano in the north and Bezymianny Volcano in the south both sent plumes skyward over a snowy landscape. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this false-color image on February 13, 2010.
Low-angled sunlight illuminates the southern slopes of Kamchatka’s rugged landscape, as well as the southern sides of both volcanic plumes. The plumes’ light color suggests that, of the visible material in each plume, steam predominates over volcanic ash. Both plumes cast shadows toward the northwest.
Reaching a height of 4,835 meters (15,860 feet), Klyuchevskaya (also Kliuchevskoi) Volcano is both the tallest and most active volcano on Kamchatka. It is a stratovolcano—a steep-sloped, conical structure composed of alternating layers of solidified ash, hardened lava, and rock fragments ejected by earlier eruptions. On February 11, 2010, the Kamchatka Volcanic Eruption Response Team (KVERT) reported above-background seismic activity at Klyuchevskaya Volcano, including gas and/or steam plumes reaching 6 kilometers (20,000 feet) above sea level, lava flows, and Strombolian eruptions—intermittent explosions or fountains of rock—roughly 300 meters (1,000 feet) above the volcano’s summit.
Dwarfed by its neighbor, Bezymianny reaches 2,882 meters (9,455 feet) above sea level. Compared to the volcano immediately to the north, it releases a smaller, thinner plume. Like Klyuchevskaya, Bezymianny is also a stratovolcano. On February 11, KVERT reported that Bezymianny was releasing plumes that could affect low-flying aircraft, and it might have experienced a moderate explosive event February 5–6, 2010. More significant seismic activity at Klyuchevskaya, however, obscured data from Bezymianny.
Kamchatka lies along the Pacific Ring of Fire—a seismically active area encircling the Pacific Ocean. Both Klyuchevskaya and Bezymianny were intermittently active in late 2009 and early 2010.
NASA Earth Observatory image created by Jesse Allen, using data provided courtesy of NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team. Caption by Michon Scott.