Probability (%) that an eruption occurs or does not occur in a year

as of 1996.12.3	

M1	M2	M3	M4	M5	M6	M7	No Erup	Activ	Volcano name

1.6	0	0	0	0	0	0	98.4	1.7	ShiretokoIwozan
0	0	0.3	0.2	0	0	0	99.5	3.86	ShiretokoRausu
0	0	0	0.002	0.055	0.004	0.002	99.937	4.97	Kutcharo.Mashu
0	0	0	0.2	0	0	0	99.8	3.8	Kutcharo.Atosanupuri
1.6	0	0	0.2	0	0	0	98.2	3.8	Akan*
0	0.3	0	0	0	0.002	0	99.698	3.81	Taisetsu
0.8	0	0.9	0	0	0	0	98.3	3.46	Tokachi*
0	0.6	0	0	0	0	0	99.4	2.28	Maruyama
0.8	0	0	0	0.105	0.002	0.001	99.092	4.85	Shikotsu.Tarumai
0	0.3	0	0	0.001	0.002	0	99.697	3.83	Shikotsu.Eniwa
0.8	0	0	0	0.004	0.012	0	99.184	4.59	Kuttara
0	0	0	0	0.002	0	0	99.998	2.8	Yotei
0	0	1.5	0.2	0.051	0	0.001	98.248	4.77	Toya.Usu
0	0	0	0	0	0.002	0	99.998	3.8	Nigorikawa
0	0	0	0.4	0.052	0	0	99.548	4.46	Komagatake*
0	0	0	0	0	0.002	0	99.998	3.8	Zenigame
0.8	0	0	0	0	0	0	99.2	1.4	Esan
0	0	0	0	0.003	0	0	99.997	2.98	Rishiri
0	0	0	0.2	0	0	0	99.8	3.8	OshimaOshima*
0.8	0	0	0	0	0	0	99.2	1.4	Iwaki
0	0	0.001	0.003	0.064	0.006	0	99.926	4.59	Towada
0	0	0.002	0.001	0	0	0	99.997	1.58	Megata
0.8	0.3	0.001	0	0	0	0	98.899	2.09	AkitaYakeyama
0	0	0	0	0.002	0	0	99.998	2.8	Yakeishi
0	0.3	0.3	0	0.001	0	0	99.399	3.13	Iwate*
0	0.6	0	0.002	0	0	0	99.398	2.4	AkitaKomagatake
0.8	0	0.3	0	0	0	0	98.9	2.99	Chokai
0	0	0	0	0.001	0	0	99.999	2.5	Hijiori
1.6	0	0	0	0	0	0	98.4	1.7	Kurikoma*
0.8	0	0	0	0.001	0.002	0	99.197	3.82	Narugo
1.6	0	1.8	0.2	0	0	0	96.4	4.08	Zao
0	0	0	0	0.002	0	0	99.998	2.8	Numazawa
0.8	0	0.001	0	0	0	0	99.199	1.45	Azuma*
0	0.3	0	0.003	0	0	0	99.697	2.28	Adatara*
0	0	0.6	0	0.002	0	0	99.398	3.4	Bandai
0.8	0.6	0	0.001	0	0	0	98.599	2.39	Nasu
0	0	0	0.001	0	0	0	99.999	1.5	Takahara
0	0	0	0.006	0.003	0	0	99.991	3.06	Nikko.Nantai
0	0.303	0	0.001	0.001	0	0	99.695	2.65	NikkoShirane
0	0	0.3	0.003	0.002	0	0	99.695	3.22	Hiuchi
0	0	0.001	0.003	0.008	0	0	99.988	3.42	Akagi
0	0	0	0.4	0.001	0	0	99.599	4.11	Haruna
0	0	0	0.001	0.001	0	0	99.998	2.54	Shiga
2.4	0.9	0.005	0.003	0	0	0	96.692	2.67	KusatsuShirane
13.6	0	0.3	0.4	0.055	0.002	0	85.643	4.58	Asama
0	0.3	0	0.001	0	0	0	99.699	2.1	Tateshina
0.8	0	0.6	0.2	0.05	0	0	98.35	4.38	NiigataYakeyama
0	0	0.002	0.004	0	0	0	99.994	2.12	Myoko
0	0	0.001	0.002	0	0	0	99.997	1.82	Kurohime
0	0.004	0	0	0.001	0	0	99.995	2.5	Tateyama
0	0	0.001	0	0	0	0	99.999	0.5	Washibaike
0.8	0.3	0	0.2	0	0	0	98.7	3.81	Yakedake
0	0	0	0.002	0.001	0	0	99.997	2.58	Norikura
0.8	0	0	0	0.005	0.004	0	99.191	4.15	Ontake
0	0	0.3	0	0	0	0	99.7	2.98	Hakusan
0.8	2.1	2.7	0.2	0.053	0	0	94.147	4.51	Fuji
0	0	0.001	0.005	0.005	0.002	0	99.987	3.91	Hakone
0.8	0.007	0.009	0.005	0	0	0	99.179	2.33	HigashiIzu*
0.8	1.8	5.7	2.2	0	0	0	89.5	4.95	IzuOshima*
0	0	0.002	0.2	0.05	0	0	99.748	4.35	Niijima
0	0	0	0.2	0.05	0	0	99.75	4.35	Kozushima*
0	2.1	2.7	0.001	0	0	0	95.199	3.97	Miyakejima
0	1.5	0.007	0.016	0.001	0	0	98.476	3.12	Hachijojima
0	0	0	0	0.002	0	0	99.998	2.8	Aogashima
0	0	0.9	0	0	0	0	99.1	3.45	Beyonesu Rock
0	0	0.3	0	0	0	0	99.7	2.98	Smith Rock
0	0	0.3	0.2	0	0	0	99.5	3.86	IzuTorishima
0	0	0.3	0	0	0	0	99.7	2.98	Nishinoshima
0	0.3	0	0	0	0	0	99.7	1.98	Kaitoku
0	0	0.3	0	0	0	0	99.7	2.98	FunkaAsane
0.8	0	0	0	0	0	0	99.2	1.4	Iwojima*
0	0	0.3	0.2	0	0	0	99.5	3.86	FukutokuOkanoBa*
0	0	0.3	0	0	0	0	99.7	2.98	KitaFukutokutai
0	0	0	0.002	0	0	0	99.998	1.8	Kan'nabe
0	0	0	0	0.002	0.004	0	99.994	4.12	Daisen
0	0	0	0	0	0.004	0	99.996	4.1	Sanbe
0	0.3	0.001	0	0	0	0	99.699	1.99	Yufuin.Garan
0	0	0	0.2	0	0	0	99.8	3.8	Yufuin.Tsurumi
0	0	0	0.2	0	0	0	99.8	3.8	Yufuin.Yufu
0	0.3	0.002	0.001	0.001	0.002	0	99.694	3.83	Kuju*
0	0	0.9	0.2	0.006	0	0.001	98.893	4.63	Aso
0	0	0.6	0.2	0	0	0	99.2	3.91	Unzen*
3.2	1.2	0.9	0.4	0.006	0.002	0	94.292	4.38	Kirishima
0	0	0	0.4	0.156	0.004	0.001	99.439	5.03	Aira.Sakurajima**
0	0	0.3	0.6	0.004	0.002	0.001	99.093	4.77	Ata.Kaimon
0	0.3	0.6	0	0	0	0.002	99.098	4.81	Kikai
0	0	0	0.2	0	0	0	99.8	3.8	KuchinoErabu
0	0.3	0	0	0	0	0	99.7	1.98	Kuchinoshima
0.8	0	0	0	0	0	0	99.2	1.4	Nakanoshima
0	0	0.3	0.4	0	0	0	99.3	4.13	Suwanose**
0	0	0.3	0	0	0	0	99.7	2.98	IwoTorishima
0	0	0.3	0	0	0	0	99.7	2.98	IriomoteNNE

M1	M2	M3	M4	M5	M6	M7	No Erup	Activ	Volcano name

40	15.314	25.237	8.869	0.81	0.06	0.009		6.04	Whole Japan
40	13	23	9.2	0.72	0.072	0.008		6.03	Historic Facts


Probabilities are given for each M class for a volcano.  M is Magnitude. 
It is defined as M = log m - 7, where m is the mass of magma erupted in kg. 
The M1 class means 1.0 =< M < 2.0.

Probabilities (in %) are calculated from "The 2000-year Eruption Catalog" 
and "The One-million year Tephra Catalog". 

Activity is an average mass of magma erupted per 100 years. It is expressed by M.

Volcanoes with ** are now in eruption.  Volcanoes with * are now in unrest.