NASA: It is happening now - Está sucediendo ahora - 09-02-11 - Shinmoe-dake Volcano Erupts on Kyushu. Japan - Peru - Ubinas Volcano
Posted by Ricardo Marcenaro | Posted in NASA: It is happening now - Está sucediendo ahora - 09-02-11 - Shinmoe-dake Volcano Erupts on Kyushu - Ubinas Volcano , Peru | Posted on 15:05
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Shinmoe-dake Volcano Erupts on Kyushu
After a week of violent activity, the eruption of Japan’s Shinmoe-dake Volcano shows no signs of slowing down. This natural-color satellite image shows Shinmoe-dake on the morning of February 3, 2011. The image was acquired by the Advanced Land Imager (ALI) aboard Earth Observing-1 (EO-1) at about 10:30 a.m. local time, between an early-morning eruption at 3 a.m. and an early-afternoon eruption at 12:17 p.m.
According to the Global Volcanism Program, small precursor eruptions caught the attention of Japanese authorities in March 2010, and sporadic explosions and ash emissions continued for 10 months. On January 26, 2011, ash and volcanic bombs began to spew from the volcano, as intermittent explosions shook the surrounding area.
Along with the explosive eruptions, a lava dome has been growing inside Shinmoe-dake’s crater. The Mainichi Daily News reported that the lava dome was 600 meters (2,000 feet) wide, and about 110 meters (360 feet) high on February 3rd. The rounded lava dome fills most of the summit crater.
A volcanic plume, colored white and light gray, rises from the margins of the dome, thinning as it spreads eastwards. Gray ash coats the ground southeast of the crater. Additional features of the Kirishima Volcanic Field, such as the ice-covered crater lake to the northeast, surround Shinmoe-dake.
References
- Biggs, S. (2011, February 3). Japan’s '007' volcano on Kyushu erupts for ninth time in a week, JMA says. Bloomberg. Accessed February 3, 2011.
- Global Volcanism Program. (2011, February 3). Archive of Weekly Reports: Kirishima. Accessed February 3, 2011.
- The Mainichi Daily News. (2011, February 2). Kyushu volcano erupts two more times. Accessed February 3, 2011.
- The Mainichi Daily News. (2011, February 2). Experts divided on potential for larger eruption of Kyushu volcano. Accessed February 3, 2011.
- Klemetti, Erik. (2011, February 3). Kirishima and Sakurajima seen from space (and more!). Eruptions. Accessed February 3, 2011
More images of this event in Natural Hazards
NASA image by Robert Simmon, using ALI data from the EO-1 team. Caption by Robert Simmon.
- Instrument:
- EO-1 - ALI
- http://earthobservatory.nasa.gov/IOTD/view.php?id=49094&src=eoa-iotd
Ubinas Volcano, Peru
Free of vegetation, the gray and white lava-covered peak of the Ubinas Volcano looks like it could be located on the Moon or some other extraterrestrial body. The Advanced Land Imager (ALI) on NASA’s EO-1 satellite captured this true-color image of the Peruvian volcano on July 24, 2010.
The barren summit hints at recent volcanic activity, and in fact, Ubinas is Peru’s most active volcano. Apart from venting ash frequently, Ubinas has erupted many times since 1550. The last eruption started on March 25, 2006. As a result of its frequent activity, the steeply sloped peak is coated with lava. A canyon on the southern slope is evidence of a collapse in the volcano’s past.
A small circular caldera crowns the volcano. A little more than a kilometer across, the caldera is defined by walls that range from 80 to 300 meters high. Dark-colored ash and tiny volcanic rocks (lapilli) carpet the crater floor. An ash cone rises from the center of the crater, casting a dark triangular shadow. Within the shadow of the ash cone lies a white, funnel-shaped inner crater that is 200 meters deep.
Ubinas is one of many volcanoes that dot the high desert plateau east of Lake Titicaca in southern Peru. In the Central Volcanic Zone in the Andes, mountains and volcanoes grow as the Nazca plate, part of Earth’s crust under the southeast Pacific Ocean, sinks beneath the South American plate. The pressure of the collision wrinkles the South American plate, pushing the Andes Mountains up. As the material in the Nazca plate melts deep in the Earth, some rises to the surface through weak areas in the South American plate. Along with South America’s other volcanoes, Ubinas is part of the Pacific Ring of Fire, a chain of volcanoes around the Pacific Ocean that formed because of tectonic activity.
References
- Global Volcanism Program. (2010). Ubinas. Smithsonian National Museum of Natural History. Accessed August 24, 2010.
- Thouret, J.C., Rivera, M., Wörner, G., Gerbe, M.C., Finizola, A., Fornari, M., and Gonzales, K. (2005, April 21). Ubinas: the evolution of the historically most active volcano in southern Peru.Bulletin of Volcanology, 67 (6). 557-589.
NASA Earth Observatory image by Robert Simmon, using ALI data from the NASA EO-1 team. Caption by Holli Riebeek.
- Instrument:
- EO-1 - ALI
- http://earthobservatory.nasa.gov/IOTD/view.php?id=49107&src=eoa-iotd
NASA: It is happening now - Está sucediendo ahora - 09-02-11 - Shinmoe-dake Volcano Erupts on Kyushu. Japan - Peru - Ubinas Volcano
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