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Transcript of Asama Volcano
By: Sean Logue
Name, Location, Coordinates.
State of Honsho, Japan
Latitude of 36.40(dd) and Longitude of 138.53 (dd)
Tectonic Plates and Geological Area
Pacific, Eurasian and Philippine Tectonic Plates
Mount Asama sits on the Izu-Bonin-Mariana Arc and the Northeastern Japan Arc
Mount Asama is the result of subduction of these tectonic plates
Age, Type and Composition
Mount Asama is a few thousand years old.
It's a composite or stratovolcano.
Made up of non-alkali mafic and pyroclastic volcanic rocks.
It stands 8,425 feet above sea level
Mount Asama has three overlapping bodies; a young strato volcano with two craters lying on a shield volcano, which rests on a older stratovolcano
Condition and Most Recent Eruption
Mout Asama is an active volcano
The most recent eruption was on February 2, 2009, here's a video of the eruption
Type of Eruptions
Moumt Asama has erupted 121 times
Most eruptions have been explosive, including frequent strombolian to vulcanian activity
Mount Asama has had 2 major plinian eruptions
Western Crater is 1.25 miles wide
Outer crater is 4,000 feet wide
1783, one of Japan's largest and deadliest
destroyed 4 villages and killed around 1,400 people
many died in years to follow due to famine from the volcanoes effects
Volcanoes in Japan
In fact, when Mount Asama erupted in 1783, it was the 16th most deadliest volcano in history!
As seen in the bar graph below, volcanoes in Japan produce the 3rd most deaths in the world!
Legend of Eruption of 1783
Blocky, black volcanic stones lie in an area around the volcano
These are called "Oni Oshi Dashi", which means "Expelled Demons"
Legend states that the demons inside the mountain were rioting and took revenge on the villagers
Benefits of Eruption
provide nutrients to the surrounding soil
help cool off the earth
volcano emissions have produced the atmosphere and the water in the ocean
make islands and add to the continent
Mount Asama has promoted tourism, there is a resort town and volcano museum there
Mount Asama is the most active volcano in Horshu (the main island of Japan)
It is considered an active volcano and most likely will erupt again
Scientists use seismographs and video cameras to help predict future eruptions
There is also a volcano observation station run by Tokyo University
Hopefully using these tools, scientists can make sure people are evacuated in time the next time Mount Asama erupts.
Mount Asama is the most active volcano in Horshu, the main island of Japan
Since scientists consider it active, they believe it will erupt again
It is closely monitored with seismographs and video cameras
Also, by a volcano observation station run by Tokyo University
Hopefully, scientists will be able to alert people who live close by the next time Mount Asama erupts!
June 8, 2015