月間火山概況・火山活動解説資料(2020年)

月間火山概況は、前月１か月間の火山活動の状況等を取りまとめた資料です。毎月上旬に全国版と各地方版を発表しています。
火山活動解説資料は、写真や図表等を用いて火山活動の状況や防災上警戒・注意すべき事項等について解説するため、毎月上旬に、前月１か月の火山活動の状況等について解説するために発表しています。
また、噴火警報や火山の状況に関する解説情報（臨時）等を発表した場合に、それらの情報を解説するために随時発表しています。
2023～2025年の資料は火山活動解説資料のページでご確認いただけます。

2020年に発表した資料

月間火山概況（クリックすると表が開閉します）

地方名	1月	2月	3月	4月	5月	6月	7月	8月	9月	10月	11月	12月	年報
全国	[620KB]	[682KB]	[614KB]	[764KB]	[617KB]	[710KB]	[652KB]	[798KB]	[832KB]	[687KB]	[802KB]	[708KB]	[241KB]
北海道	[550KB]	[374KB]	[390KB]	[374KB]	[374KB]	[3.5MB]	[395KB]	[378KB]	[378KB]	[378KB]	[377KB]	[376KB]
東北地方	[121KB]	[212KB]	[210KB]	[209KB]	[211KB]	[211KB]	[213KB]	[212KB]	[213KB]	[213KB]	[212KB]	[212KB]
関東・中部地方、伊豆・小笠原諸島	[77KB]	[241KB]	[76KB]	[521KB]	[77KB]	[244KB]	[295KB]	[593KB]	[586KB]	[587KB]	[594KB]	[290KB]
中国地方	[53KB]	[53KB]	[53KB]	[53KB]	[53KB]	[53KB]	[109KB]	[110KB]	[110KB]	[111KB]	[111KB]	[110KB]
九州地方	[792KB]	[793KB]	[438KB]	[440KB]	[433KB]	[332KB]	[782KB]	[326KB]	[323KB]	[320KB]	[321KB]	[419KB]
沖縄	[36KB]	[36KB]	[36KB]	[36KB]	[36KB]	[36KB]	[90KB]	[90KB]	[90KB]	[91KB]	[93KB]	[90KB]

火山名	1月	2月	3月	4月	5月	6月	7月	8月	9月	10月	11月	12月	年のまとめ
アトサヌプリ	[869KB]	[1.2MB]	[610KB]	[2.2MB]	[357KB]	[605KB]	[355KB]	[1.9MB]	[363KB]	[359KB]	[356KB]	[360KB]	[2.3MB]
雌阿寒岳	[2.6MB]	[2.2MB]	[2.3MB]	[2.5MB]	[2.5MB]	[3.0MB]	[3.6MB]	[2.0MB]	[2.0MB]	[3.7MB]	[2.2MB]	[1.9MB]	[4.4MB]
大雪山	[931KB]	[1.0MB]	[845KB]	[1.1MB]	[849KB]	[994KB]	[918KB]	[918KB]	[840KB]	[845KB]	[844KB]	[839KB]	[399KB]
十勝岳	[1.6MB]	[3.9MB]	[1.8MB]	[1.9MB]	[1.9MB]	[2.7MB]	[3.3MB]	[2.4MB]	[3.7MB]	[2.4MB]	[2.2MB]	[2.0MB]	[3.9MB]
樽前山	[1.3MB]	[1.8MB]	[1.6MB]	[3.1MB]	[1.2MB]	[2.1MB]	[1.7MB]	[1.6MB]	[1.6MB]	[1.2MB]	[1.4MB]	[2.2MB]	[3.1MB]
恵庭岳												[417KB]	[415KB]
倶多楽	[439KB]	[292KB]	[481KB]	[705KB]	[385KB]	[422KB]	[1.2MB]	[946KB]	[681KB]	[306KB]	[401KB]	[1.0MB]	[2.3MB]
有珠山	[657KB]	[1.2MB]	[976KB]	[1.5MB]	[959KB]	[641KB]	[621KB]	[620KB]	[565KB]	[1.8MB]	[803KB]	[1.6MB]	[1.8MB]
北海道駒ヶ岳	[791KB]	[842KB]	[1.1MB]	[2.5MB]	[1.2MB]	[825KB]	[811KB]	[790KB]	[1.0MB]	[1.2MB]	[1.0MB]	[1.0MB]	[1.3MB]
恵山	[350KB]	[347KB]	[527KB]	[1.1MB]	[477KB]	[352KB]	[374KB]	[383KB]	[577KB]	[1.3MB]	[914KB]	[579KB]	[1.5MB]
臨時資料	十勝岳(1/20[709KB]), 十勝岳(2/27[573KB]), 十勝岳(6/8[212KB]), 十勝岳(6/15[1.0MB]), 十勝岳(9/14[1.4MB])

火山名	1月	2月	3月	4月	5月	6月	7月	8月	9月	10月	11月	12月	年のまとめ
岩木山	[604KB]	[651KB]	[594KB]	[679KB]	[541KB]	[685KB]	[594KB]	[625KB]	[635KB]	[1.4MB]	[633KB]	[629KB]	[1.8MB]
八甲田山	[1.0MB]	[1.1MB]	[1.0MB]	[1.1MB]	[1.2MB]	[1.3MB]	[4.2MB]	[1.3MB]	[1.3MB]	[2.3MB]	[1.4MB]	[1.1MB]	[3.8MB]
十和田	[1.2MB]	[1.4MB]	[1.2MB]	[1.3MB]	[1.3MB]	[1.4MB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.6MB]	[1.2MB]	[1.2MB]	[1.5MB]
秋田焼山	[859KB]	[1.6MB]	[785KB]	[908KB]	[831KB]	[899KB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.1MB]	[1.8MB]
岩手山	[1.5MB]	[2.7MB]	[1.4MB]	[1.7MB]	[1.4MB]	[1.5MB]	[1.4MB]	[2.0MB]	[1.3MB]	[1.4MB]	[1.4MB]	[1.3MB]	[3.3MB]
秋田駒ヶ岳	[1.7MB]	[2.4MB]	[1.7MB]	[1.8MB]	[1.7MB]	[2.7MB]	[2.2MB]	[2.5MB]	[2.3MB]	[3.2MB]	[2.7MB]	[2.0MB]	[2.9MB]
鳥海山	[1.0MB]	[1.1MB]	[1.0MB]	[984KB]	[1.0MB]	[1.1MB]	[974KB]	[1.1MB]	[1.3MB]	[1.1MB]	[1.1MB]	[974KB]	[788KB]
栗駒山	[1.1MB]	[1.6MB]	[1.1MB]	[985KB]	[1.9MB]	[1.1MB]	[1.0MB]	[1.8MB]	[1.3MB]	[2.0MB]	[1.3MB]	[1.0MB]	[3.1MB]
蔵王山	[1.4MB]	[2.3MB]	[1.5MB]	[1.8MB]	[2.4MB]	[2.7MB]	[1.6MB]	[1.1MB]	[1.2MB]	[1.3MB]	[1.2MB]	[1.0MB]	[2.2MB]
吾妻山	[3.4MB]	[3.9MB]	[3.2MB]	[2.9MB]	[3.3MB]	[3.5MB]	[4.2MB]	[4.7MB]	[4.6MB]	[3.4MB]	[4.9MB]	[3.2MB]	[6.2MB]
安達太良山	[1.2MB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.0MB]	[1.4MB]	[1.3MB]	[1.2MB]	[1.0MB]	[1.1MB]	[1.1MB]	[879KB]	[1.8MB]
磐梯山	[1.4MB]	[1.8MB]	[1.4MB]	[1.4MB]	[1.2MB]	[1.7MB]	[1.3MB]	[1.5MB]	[1.5MB]	[1.7MB]	[1.5MB]	[1.3MB]	[1.3MB]
臨時資料	秋田駒ヶ岳(2/26[1.1MB]), 吾妻山(7/23[910KB])

火山名	1月	2月	3月	4月	5月	6月	7月	8月	9月	10月	11月	12月	年のまとめ
那須岳	[623KB]	[621KB]	[635KB]	[625KB]	[612KB]	[716KB]	[2.6MB]	[853KB]	[3.7MB]	[2.5MB]	[936KB]	[1.0MB]	[1.2MB]
日光白根山	[660KB]	[671KB]	[654KB]	[581KB]	[664KB]	[702KB]	[1.0MB]	[766KB]	[884KB]	[3.0MB]	[870KB]	[1.1MB]	[883KB]
草津白根山	[2.6MB]	[3.3MB]	[3.9MB]	[4.2MB]	[4.0MB]	[3.2MB]	[11.5MB]	[2.9MB]	[2.8MB]	[18.0MB]	[3.9MB]	[3.1MB]	[5.6MB]
浅間山	[929KB]	[879KB]	[1.0MB]	[916KB]	[913KB]	[2.7MB]	[3.5MB]	[2.7MB]	[5.7MB]	[6.6MB]	[2.5MB]	[2.8MB]	[3.1MB]
新潟焼山	[1.0MB]	[837KB]	[826KB]	[1.1MB]	[989KB]	[1.0MB]	[1.6MB]	[805KB]	[8.5MB]	[1.3MB]	[895KB]	[1.2MB]	[2.3MB]
妙高山				[457KB]									[932KB]
弥陀ヶ原	[578KB]	[321KB]	[1.0MB]	[480KB]	[758KB]	[746KB]	[1.9MB]	[1.0MB]	[896KB]	[5.0MB]	[898KB]	[1.1MB]	[1.7MB]
焼岳	[1.8MB]	[1.9MB]	[1.7MB]	[1.7MB]	[1.8MB]	[2.4MB]	[6.3MB]	[1.3MB]	[2.9MB]	[1.9MB]	[5.8MB]	[2.2MB]	[3.7MB]
乗鞍岳	[1.2MB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.2MB]	[1.2MB]	[2.3MB]	[1.3MB]	[2.5MB]	[2.4MB]	[1.0MB]	[1.2MB]	[1.2MB]
御嶽山	[2.2MB]	[2.2MB]	[2.1MB]	[2.2MB]	[2.8MB]	[2.8MB]	[2.6MB]	[3.0MB]	[3.1MB]	[2.2MB]	[2.3MB]	[2.7MB]	[2.7MB]
白山	[699KB]	[700KB]	[704KB]	[1.0MB]	[698KB]	[1.3MB]	[870KB]	[980KB]	[1.5MB]	[1.6MB]	[738KB]	[729KB]	[774KB]
富士山	[686KB]	[717KB]	[730KB]	[749KB]	[813KB]	[705KB]	[1.2MB]	[808KB]	[1.6MB]	[2.4MB]	[1.1MB]	[1.3MB]	[1.2MB]
箱根山	[2.6MB]	[2.6MB]	[2.8MB]	[2.3MB]	[2.2MB]	[2.2MB]	[6.1MB]	[2.4MB]	[7.7MB]	[7.9MB]	[1.9MB]	[1.5MB]	[1.9MB]
伊豆東部火山群	[849KB]	[846KB]	[848KB]	[853KB]	[848KB]	[855KB]	[1.1MB]	[956KB]	[1.8MB]	[2.2MB]	[1.2MB]	[1.2MB]	[1.3MB]
伊豆大島	[1.4MB]	[2.3MB]	[1.4MB]	[1.3MB]	[2.6MB]	[2.2MB]	[5.5MB]	[2.3MB]	[8.7MB]	[7.9MB]	[1.6MB]	[1.5MB]	[1.6MB]
新島	[496KB]	[445KB]	[595KB]	[362KB]	[578KB]	[313KB]	[906KB]	[560KB]	[796KB]	[755KB]	[538KB]	[657KB]	[683KB]
神津島	[131KB]	[130KB]	[130KB]	[129KB]	[133KB]	[205KB]	[1.2MB]	[584KB]	[917KB]	[676KB]	[566KB]	[433KB]	[549KB]
三宅島	[1.2MB]	[1.1MB]	[1.0MB]	[1.0MB]	[2.5MB]	[2.0MB]	[6.6MB]	[2.0MB]	[9.5MB]	[11.4MB]	[2.1MB]	[2.0MB]	[1.6MB]
八丈島	[226KB]	[223KB]	[237KB]	[356KB]	[344KB]	[230KB]	[727KB]	[377KB]	[710KB]	[669KB]	[506KB]	[340KB]	[482KB]
青ヶ島	[573KB]	[487KB]	[476KB]	[484KB]	[486KB]	[632KB]	[1.9MB]	[595KB]	[8.1MB]	[8.3MB]	[788KB]	[835KB]	[612KB]
伊豆鳥島											[220KB]		[240KB]
西之島	[806KB]	[1.6MB]	[893KB]	[1.8MB]	[231KB]	[773KB]	[684KB]	[925KB]	[3.3MB]	[8.8MB]	[1.5MB]	[876KB]	[1.4MB]
硫黄島	[722KB]	[1.8MB]	[1.2MB]	[751KB]	[762KB]	[752KB]	[2.0MB]	[863KB]	[2.6MB]	[14.2MB]	[960KB]	[1.8MB]	[3.4MB]
福徳岡ノ場		[175KB]	[155KB]	[83KB]		[54KB]							[285KB]
臨時資料	草津白根山（白根山（湯釜付近））(3/29[1.0MB]), 西之島(6/15[908KB]), 西之島(6/16[1.1MB]), 白山(6/19[739KB]), 浅間山(6/21[912KB]), 浅間山(6/25[2.1MB]), 西之島(7/15[1.9MB]), 西之島(12/18[886KB])

火山名	1月	2月	3月	4月	5月	6月	7月	8月	9月	10月	11月	12月	年のまとめ
鶴見岳・伽藍岳	[3.1MB]	[3.3MB]	[1.5MB]	[2.0MB]	[3.2MB]	[3.6MB]	[6.2MB]	[3.6MB]	[12.2MB]	[3.2MB]	[2.5MB]	[2.4MB]	[2.4MB]
九重山	[6.8MB]	[6.7MB]	[5.8MB]	[3.7MB]	[5.5MB]	[5.2MB]	[12.7MB]	[11.3MB]	[11.4MB]	[3.9MB]	[3.0MB]	[3.0MB]	[2.9MB]
阿蘇山	[6.3MB]	[7.5MB]	[3.9MB]	[3.8MB]	[6.8MB]	[3.2MB]	[10.3MB]	[15.4MB]	[17.3MB]	[5.2MB]	[4.4MB]	[5.1MB]	[5.3MB]
雲仙岳	[3.3MB]	[3.3MB]	[3.3MB]	[2.0MB]	[3.2MB]	[1.7MB]	[2.9MB]	[4.1MB]	[2.7MB]	[2.2MB]	[2.6MB]	[2.2MB]	[3.1MB]
霧島山	[14.4MB]	[12.5MB]	[12.1MB]	[10.3MB]	[14.9MB]	[14.1MB]	[9.3MB]	[25.2MB]	[42.1MB]	[20.0MB]	[13.1MB]	[11.6MB]	[11.5MB]
桜島	[6.0MB]	[5.9MB]	[6.4MB]	[8.4MB]	[8.7MB]	[9.9MB]	[3.8MB]	[34.8MB]	[25.5MB]	[10.7MB]	[5.4MB]	[3.5MB]	[8.0MB]
薩摩硫黄島	[4.5MB]	[1.8MB]	[1.7MB]	[1.7MB]	[887KB]	[1.1MB]	[2.4MB]	[1.7MB]	[2.1MB]	[1.4MB]	[2.7MB]	[907KB]	[1.9MB]
口永良部島	[7.1MB]	[3.7MB]	[5.0MB]	[4.4MB]	[2.1MB]	[1.8MB]	[4.6MB]	[12.7MB]	[5.6MB]	[3.6MB]	[2.6MB]	[1.9MB]	[4.1MB]
諏訪之瀬島	[4.5MB]	[2.9MB]	[2.6MB]	[2.7MB]	[2.8MB]	[1.8MB]	[2.2MB]	[1.8MB]	[1.9MB]	[1.7MB]	[3.0MB]	[2.1MB]	[4.1MB]
臨時資料	霧島山（新燃岳）(1/3[3.7MB]), 口永良部島(1/11[1.4MB]), 口永良部島(2/4[3.5MB]), 阿蘇山(5/16[2.7MB]), 口永良部島(5/20[1.4MB]), 桜島(6/8[507KB]), 桜島(8/9[1.4MB]), 口永良部島(8/14[929KB]), 阿蘇山(8/18[1.6MB]), 霧島山（新燃岳）(12/11[2.4MB]), 霧島山（新燃岳）(12/24[996KB]), 霧島山（新燃岳）(12/25[1.7MB]), 諏訪之瀬島(12/26[19.3MB]), 諏訪之瀬島(12/28[1.1MB])

月間火山概況・火山活動解説資料(2020年)

2020年に発表した資料

月間火山概況（クリックすると表が開閉します）

北海道の火山（クリックすると表が開閉します）

東北地方の火山（クリックすると表が開閉します）

関東・中部地方、伊豆・小笠原諸島の火山（クリックすると表が開閉します）

中国地方の火山（クリックすると表が開閉します）

九州地方の火山（クリックすると表が開閉します）

沖縄の火山（クリックすると表が開閉します）