OREGON STATE UNIVERSITY

Akan

Latitude (dd): 
43.38
Longitude (dd): 
144.01
Elevation (m): 
1499
Country: 
Japan
State (Province, etc): 
Honshu
Type: 
Caldera

 

 

 

Me-Akan is a stratovolcano in the depression and the only active vent. Me-Akan has erupted at least 15 times since about 1800. Eruptions prior to 1955 were weak. The 1955 eruption was phreatic and explosive. The most recent eruption was in 1988. Although it was phreatic, like most eruptions at Me-Akan, it lasted just over a month. Most eruptions at Me-Akan last less than one day.

 

Distant view of Akan, a group of stratovolcanoes, that lies within a shallow depression. Me-Akan, the active vent, is the steaming volcano on the left. Some volcanologists think the shallow depression is a caldera.

Image credit: Paul J. Buklarewicz.

 

 

 

 

 

 

 

 

 

 

 

Summit of Me-Akun.

Image credit: Mike Lyvers.

 

 

 

 

 

 

 

 

 

 


 

 

 

  This photo shows a small lake and steaming vents.

 


Crater at Me-Akan.

 


Crater at Me-Akan.

Akan is a National Park and a center for preserving Hokkaido's native Ainu culture.

 


Akan volcano (on the right) with Me-akan in the distance on the left.


Akan from the shores of Lake Akan, where hot sulphurous springs bubble up in the sand.


View of Me-akan and Akan-ko-fuji volcanoes from the shore of beautiful Lake Onneto.

 


View of Me-akan and Akan-ko-fuji volcanoes from the shore of beautiful Lake Onneto.


The crater wall.


The fumaroles of Me-akan release caustic gases. Note person with face covered.


A roaring vent emitting hot blue gas at high pressure, Me-akan.

Image description follows
Part of the largest crater of Me-akan.

Image description follows
Sulphur volcanoes and a vent in the right background emitting hot black mudflows (there were frequent small mud explosions from this vent).

 

 

Sources of Information:

Kuno, H., 1962, Part XI, Japan, Taiwan and Marianas: Catalogue of the active volcanoes of the world including solfatara fields, International Association of Volcanology, Rome, Italy, 332 p.

McClelland, L., Simkin, T., Summers, M., Nielsen, E., and Stein, T.C., 1989, Global Volcanism 1975-1985: Englewood Cliffs, New Jersey, Prentice Hall, 655 p.

Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, Arizona, 349 p.