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Interesting. It seems that Ash eruptions are a major problem with Volcanoes, but for some reason the Hawaiian volcanoes do not seem to exhibit this characteristic. Does anybody know why?
The latest on the eruption from the USGS
edit: for rah...just because.
The latest on the eruption from the USGS
Kilauea Eruption Status
Early last Saturday, July 21, after nearly three weeks of refilling, the floor of Pu`u `O`o subsided as lava erupted from new fissures on the east side of Pu`u `O`o cone. The fissures, extending along a line nearly a mile long, began to pour lava onto the ground between Pu`u `O`o and Kupaianaha. The upper portion of the fissure system stagnated by mid-morning on Saturday, but the lower fissures continued to erupt throughout the past week.
Though one lava flow reached just over half a mile from the fissures during the first day of activity, most of the lava has piled up fairly close to the vents. Four large lava ponds, perched up to about 50 feet above the surrounding lava surface, were constructed over the erupting fissures early in the week. Three of the ponds had broken through their walls by mid-week, sending lava gushing out as thick `a`a flows, before promptly beginning to form new ponds. By Thursday, the day of this writing, the level of activity from the fissures had noticeably declined. The level of the lava in the ponds had gone down, and the pond walls had become exposed. The number of lava overflows from the edges of the ponds had also subsequently decreased.
Vent areas are hazardous. Access to the eruption site, in the Pu`u Kahauale`a Natural Area Reserve, is closed, and questions may be directed to the Hilo Division of Forestry and Wildlife Office at (808) 974-4221 (a press release is available at http://www.state.hi.us/dlnr/chair/pi...NR/07-N076.htm).
In response to this eruption, the summit of Kilauea Volcano started to deflate just after midnight on July 21; thus far, the summit has deflated nearly 7 microradians – small in comparison to the 50-microradian inflation on June 17 and 18 and the more-than-30-microradian inflation since. Seismic tremor levels remain low; the number of earthquakes beneath the upper east rift zone has declined this week, compared to the past several.
Two earthquakes beneath Hawai`i Island were reported felt within the past week. A magnitude-3.6 earthquake occurred at 10:15 p.m. H.s.t. on Sunday, July 22, and was located 8 km (5 miles) southeast of Ho`okena at a depth of 14 km (9 miles). A magnitude-3.2 earthquake occurred at 8:59 a.m. on Wednesday, July 25, and was located 1 km (1 mile) southeast of Pu`ulena Crater at a depth of 3 km (2 miles).
Mauna Loa is not erupting. No earthquakes were located beneath the summit. Extension between locations spanning the summit, indicating inflation, continues at steady, slow rates, which have slowed further since May 2007.
Visit our Web site (hvo.wr.usgs.gov) for daily Kilauea eruption updates and nearly real-time Hawai`i earthquake information.
For maps, photographs, and more current information see Kilauea's eruption update page. Visit The Hawaii Center for Volcanology for captivating eruptive photos and a history of the eruption.
Early last Saturday, July 21, after nearly three weeks of refilling, the floor of Pu`u `O`o subsided as lava erupted from new fissures on the east side of Pu`u `O`o cone. The fissures, extending along a line nearly a mile long, began to pour lava onto the ground between Pu`u `O`o and Kupaianaha. The upper portion of the fissure system stagnated by mid-morning on Saturday, but the lower fissures continued to erupt throughout the past week.
Though one lava flow reached just over half a mile from the fissures during the first day of activity, most of the lava has piled up fairly close to the vents. Four large lava ponds, perched up to about 50 feet above the surrounding lava surface, were constructed over the erupting fissures early in the week. Three of the ponds had broken through their walls by mid-week, sending lava gushing out as thick `a`a flows, before promptly beginning to form new ponds. By Thursday, the day of this writing, the level of activity from the fissures had noticeably declined. The level of the lava in the ponds had gone down, and the pond walls had become exposed. The number of lava overflows from the edges of the ponds had also subsequently decreased.
Vent areas are hazardous. Access to the eruption site, in the Pu`u Kahauale`a Natural Area Reserve, is closed, and questions may be directed to the Hilo Division of Forestry and Wildlife Office at (808) 974-4221 (a press release is available at http://www.state.hi.us/dlnr/chair/pi...NR/07-N076.htm).
In response to this eruption, the summit of Kilauea Volcano started to deflate just after midnight on July 21; thus far, the summit has deflated nearly 7 microradians – small in comparison to the 50-microradian inflation on June 17 and 18 and the more-than-30-microradian inflation since. Seismic tremor levels remain low; the number of earthquakes beneath the upper east rift zone has declined this week, compared to the past several.
Two earthquakes beneath Hawai`i Island were reported felt within the past week. A magnitude-3.6 earthquake occurred at 10:15 p.m. H.s.t. on Sunday, July 22, and was located 8 km (5 miles) southeast of Ho`okena at a depth of 14 km (9 miles). A magnitude-3.2 earthquake occurred at 8:59 a.m. on Wednesday, July 25, and was located 1 km (1 mile) southeast of Pu`ulena Crater at a depth of 3 km (2 miles).
Mauna Loa is not erupting. No earthquakes were located beneath the summit. Extension between locations spanning the summit, indicating inflation, continues at steady, slow rates, which have slowed further since May 2007.
Visit our Web site (hvo.wr.usgs.gov) for daily Kilauea eruption updates and nearly real-time Hawai`i earthquake information.
For maps, photographs, and more current information see Kilauea's eruption update page. Visit The Hawaii Center for Volcanology for captivating eruptive photos and a history of the eruption.
edit: for rah...just because.
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