Table of Contents
What type of volcano is Mt Asama?
andesitic composite volcano
Asama volcano is an andesitic composite volcano and one of the most active volcanoes in Japan. Asama volcano has been active for about 100,000 years and repeatedly erupted every several years in history (Aoki et al. 2013). The recent eruptions at Asama volcano were in 2004, 2008, 2009, 2015, and 2019.
When was Mount Asama found?
The mountain last had a major event more than two centuries ago. Mount Asama, on the border of Gunma and Nagano Prefectures, erupted on August 7, 2019, sending a plume of smoke some 1,800 meters into the air….Key Events in the Eruption of 1783.
| May 9 | Eruptions begin; no serious damage |
|---|---|
| Aug. 6 | Mount Asama grows quiet |
What led to the creation of the volcano?
A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth’s surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope. Hot ash and gases are thrown into the air.
When was the largest eruption of Mt Asama?
2004 vulcanian eruption A large single vulcanian explosion occurred at Asama volcano at 20:02 local time on 1 September 2004. It was stated to be the largest eruption in over 20 years. The explosion produced a ash plume rising to 5 km altitude and drifting over 250 km.
Is Mount Asama active?
Asama volcano is the most active volcano of Honshu and one of the volcanoes with the longest recorded history of documented eruptions. It is located 130 km from Tokyo in central Honshu, overlooking the resort town of Karuizawa.
Can you hike Mt Asama?
There are two trekking trails on the mountain: the Kurofu Course (enter from Kuruma-zaka Pass), and Kazankan Volcano Visitor Center Course (enter from Hotel Tengu Onsen Asama Sanso). Please enjoy magnificent views of the active volcano from either trail.
How was magma made?
Magma forms from partial melting of mantle rocks. As the rocks move upward (or have water added to them), they start to melt a little bit. Eventually the pressure from these bubbles is stronger than the surrounding solid rock and this surrounding rock fractures, allowing the magma to get to the surface.
What kind of volcano is Mt Asama in Japan?
Asama Volcano, or Mount Asama, is a complex volcano that mixes features of different volcanoes. The volcano’s current summit sits just east of the remains of an older volcano that was wiped out by a Pleistocene landslide some 20,000 years ago.
When did the ash fall from Mt Asama?
Explosive eruptions occurred at the summit of Asama volcano on 26 April. Fine ash fell in Tokyo, 130 km (80 mi) to the SE, for the first time in 23 years. An explosive eruption occurred on 8 April. Incandescent tephra was ejected, and ash fell 250 km (160 mi) from the volcano.
How long does it take to get to the summit of Mt Asama?
A visit to the Asama Volcano Museum will give you insight into the area’s geological activity. From the trailhead at Takamine Kogen Onsen, the trek to the summit takes about 3.5 hours.
Is there A Level 2 warning for Mt Asama?
At the time of writing, there’s a level two warning in place for Mt. Asama from the Japan Meteorological Agency, meaning that “caution is advised around the crater.” Please check the current conditions before you head out.