Gidan wuta na Akan

Akan Volcanic Complex rukuni ne mai aman wuta wanda ya da girma daga Akan caldera. Akan National Park yana da nisan kilomita 50 daga Arewa maso Yamma daga Kushiro Hokkaidō, Japan.

 Bayyanawa 
An shirya tsaunuka da yawa a kusa da gefen Tafkin Akan (a.k.a. Akan-ko ), wanda ya cika caldera mai nisan kilomita 24×13,  mafi tsawo shine Me-Akan (Meakan), O-Akan-Oakan da Akan-Fuji.  

Oakan yana da mahimmanci a gefen arewa maso gabas na caldera, yayin da Meakan ya mamaye kishiyar, gefen kudu maso yamma, a cikin gungu na tara volcanoes waɗanda suka haɗa da Akan-Fuji, ɗaya daga cikin manyan tsaunukan Jafananci mai suna bayan sanannen Dutsen Fuji, da Fuppushi volcano Dutsen Fuppushi, wanda ke kudu maso yammacin Hokkaido).

 Ilimin dutsen wuta 
An kafa Akan caldera shekaru 31,500 da suka wuce. Siffar sa mai tsayi ta samo asali ne saboda haɓakar sa yayin manyan fashewar fashewar abubuwa, daga farkon zuwa tsakiyar lokacin Pleistocene.

An kafa kogon Nakamachineshiri na dutsen wuta na Meakan a lokacin babban fashewa kimanin shekaru 13,500 da suka gabata.

Ƙungiyar Me-Akan na cones guda tara da suka mamaye gabas na tafkin Akan sun sami fashewa mai sauƙi tun farkon karni na 19.  Fashewa na ƙarshe na wannan dutsen mai aman wuta na tarihi ya kasance a ciki

Oakan, Meakan, Furebetsu da Fuppushi sune manyan tsaunuka masu fashewa na dutsen wuta na Akan."AKAN Caldera". Quaternary Volcanoes of Japan, Geological Survey of Japan, AIST, 2006. Archived from the original on 2012-12-19. Retrieved 2011-03-09.

Me-Akan yana daya daga cikin manyan duwatsu masu aman wuta a Hokkaido. Taron ta ya ƙunshi ramukan Ponmachineshiri da Naka-Machineshiri, wuraren da ake yawan fashewar fashewar abubuwa a cikin tarihi. Akan-Fuji da O-Akan ba su fashe ba a tarihi.

An ƙididdige Akan da ma'aunin fashewar dutsen mai aman wuta na 4 akan ma'aunin Smithsonian VEI, dangane da fashe mafi girma na dutsen mai aman wuta, kusan 7050 BC.

Wadannan sune shahararrun siffofi na Akan: 

 Cones 

 Me-Akan-Dake (Mount Meakan) (1499 m) Dutsen Stratovolcano
 Akan Fuji (Akan-Fuji, Akan-Huji) (1476 m) Dutsen Stratovolcano
 Kita-Yama (1400 m) Cone
 O-Akan-Dake (Mount Oakan) (1371 m) Dutsen Stratovolcano
 Kenga-Mine Cone 1336 m
 Nishi-Yama (Nisi-Yama) (1300 m) Cone
 Fuppushi (Huppusi) (1226 m) Dutsen Stratovolcano
 Miname-Dake (1217 m) Dutsen Stratovolcano
 Higashi-Dake (Higasi-Dake) (1140 m) Cone
 Furebetsu (Hurebetu) (1098 m) Dutsen wuta
 Kobu-Yama Cone
 Futatsu-Dake Pyroclastic cone

 Craters 

 Nakamachineshiri (Nakamatineshiri) Crater
 Ponmachineshiri (Ponmatinesiri) Crater

 Abubuwan zafi 

 Sauran tsaunuka 

Rukuni:Shafuka masu fassarorin da ba'a duba ba