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Tag: Volcanic

Fresh quakes as volcanic eruption rumbles on

Fresh quakes as volcanic eruption rumbles on

World
Fresh earthquakes have hit Hawaii's Big Island, where a volcanic eruption has forced more than 1,700 people from their homes.The latest series of earthquakes began on Thursday with a 4.6 magnitude quake, which shook the island's active volcano Kilauea.Image:Kilauea volcano in Hawaii has spewed lava onto this street. Pic: US Geological SurveyThe volcano has been spewing ash and lava, while the earthquakes have also strengthened - the latest being a 6.9 on Friday afternoon, the largest to strike the area since a 7.5 earthquake rocked the island in 1975.Scientists are investigating whether the earthquakes are affecting the eruption of Kilauea.Lava flows from the volcano have covered 48 square miles, some of it in residential areas, although no injuries or deaths have been reported. Two homes ...
Volcanic blast reshaped summit of Indonesia's Mount Sinabung

Volcanic blast reshaped summit of Indonesia's Mount Sinabung

Technology
The eruption of Indonesia's Mount Sinabung that shot ash 5 kilometers (3 miles) high also blew away much of the mountain's summit. Before and after images from Indonesia's Center for Volcanology and Geological Hazard Mitigation show an enormous chunk missing from the peak, which it called "completely annihilated." Volcanologist Devy Kamil Syahbana said Tuesday that the chunk, known as the "lava dome," had a volume of at least 1.6 million cubic meters (56.5 million cubic feet). The volcano in North Sumatra, which has been active since 2010 after centuries of dormancy, erupted explosively on Monday morning. Hot ash clouds rolled down its slopes, traveling as far as 4.9 kilometers from the crater, and ash reached Lhokseumawe, a city more than 260 kilometers (162 miles) to the northwest. No-o...
Rocket rumbles give volcanic insights

Rocket rumbles give volcanic insights

Science
What do volcanoes and rockets have in common? "Volcanoes have a nozzle aimed at the sky, and rockets have a nozzle aimed at the ground," explains Steve McNutt, a geosciences professor at the University of South Florida in Tampa. It explains why he and colleague Dr Glenn Thompson have installed the tools normally used to study eruptions at the famous Kennedy Space Center. Comparing the different types of rumblings could yield new insights. In the case of rockets, the team thinks their seismometers and infrasound (low-frequency acoustic waves) detectors might potentially be used by the space companies as a different type of diagnostic tool, to better understand the performance of their vehicles; or perhaps as a way to identify missiles in flight. In the case of volcanoes, the idea is to take...
Volcanic eruption in Japan spreads ash in 4 cities, towns

Volcanic eruption in Japan spreads ash in 4 cities, towns

Technology
A volcano in southwestern Japan is erupting for the first time in six years, spewing ash over nearby farms, cities and towns. Japanese broadcaster TBS showed elementary school students wearing helmets and masks Thursday on the way to their school at the foot of the Shinmoedake volcano. Residents also described hearing rumbles from the volcano and ash fell in at least four cities and towns in Miyazaki prefecture. Street cleaners swept ash from city streets, and farmers used leaf blowers to clear the growing piles of ash from the tops of their plastic greenhouses. The volcano on the border of Kagoshima and Miyazaki prefectures started erupting Wednesday for the first time in six years. On Thursday, an ash plume rose 2,000 meters (6,560 feet) from the crater, the Japan Meteorological Agency ...