１９７５〜７９年の噴火活動記録

西暦
元号
月日
噴火記録（参考文献）
噴火活動
１９７５
昭和５０年

　２月

１０，１８日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）

slight explosins of the Strombolian type

andesite cindera & ash

　３月

６，１７，２０日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
　４月

３，１８日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
　５月

１，６日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
　７月

２９日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
　８月

８，１１〜１６，２７〜３１日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
　９月
 １，１５，１７〜１８日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
１０月
 ４〜９，２０〜２１日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
１１月
 ９〜１０，１９日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
１２月
 ７，２１〜２８日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1977）
１９７６
昭和５１年
　１月
 ８，９，２５，２７日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）

slight explosins of the Strombolian type

andesite scoria & ash

　２月
 １４，１５，１９，２０日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
　３月
 １２〜１４日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
　４月
 １０，１１，１３，１５日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
　７月
 ３，２３，２４日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
１０月

１２日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
１１月
 ２７日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
１２月
 ３０日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1978）
１９７７
昭和５２年

　１月

 detonation（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）

The explosion were essentially magmatic.

Natture of the major ejecta : andesite scoria & ash.

Height of the eruption cloud above the crater : Max . 4km

　２月
 detonation（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　３月
 １９〜２１…ash , smoke 1000m high ２４，２５日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　４月
 １，３…ash , smoke 1000 m high.，１０〜１１…ash , smoke 3000 m high.，１４〜１６，１８〜２０… ash , smoke 1000 m high.，２７〜２９日… ash snd scoria , ash cloud 3000 m high , incandescent colum.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　５月
 ８…detonation，１３〜１８…ash and blocks , ash cloud 2000 m high.，２６日…smoke 1000 m high.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　６月

３〜５…ash incandescent blocks , column 3000 m high. ２１〜２２日…smoke 3000 m high.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　７月
 ９〜１０…ash , smoke 4000 m high.２３日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　８月
 ８〜１０日incandescent blocks , smoke 3000 m high.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
　９月
 １０〜１５，１８日… ash , smoke 3000 m high.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
１０月
 ２３…ash , smoke 1000 m high.，２６〜３０日…ash , smoke 2000 m high.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
１１月
 １４，１９日…ash smoke 2000 m high.（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
１２月
 ６〜２０日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1979）
１９７８
昭和５３年
　３月
 １９，２２，２３，２５日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） A 1.0km high plume.
　４月
 １９〜２２，２４日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） A 3.0km high plume on 19th . Ash fall at night on 20th and 24th.
　５月
 １〜３，３１日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） Ash fall on 1st . Continuous ash column during 2nd to 3rd. Ash fall on a village ca . 3.8 km SSW of the crater.
　６月
 １６〜１９日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） 　
　７月
 ３〜５，１６〜１９日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） A 3.0 km high plume and ash fall.
　８月
 ７〜１０，１３〜２４日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） Strong detonations , volcanic night glow , ash fall and 3.0km high ash column.
　９月
 ７，１７，２３，２４日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） Five eruptions with 3.0km high ash column.
１０月
 １０〜１２，２４〜２８日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） Much ash fell on the foot.
１１月
 ６〜１０，１９〜２３日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） Ash fall
１２月
 ４，５日（BULLETIN OF VOLCANIC ERUPTIONS:IUGG,1980） 　
１９７９
昭和５４年
　２月
 噴火（日本活火山総覧、気象庁,1984） 　　
　３月
 噴火（日本活火山総覧、気象庁,1984）
　６月
 噴火（日本活火山総覧、気象庁,1984）
　７月
 噴火（日本活火山総覧、気象庁,1984）
　９月
 噴火（日本活火山総覧、気象庁,1984）
１２月
 噴火（日本活火山総覧、気象庁,1984）

＜参考文献＞

BULLETIN OF VOLCANIC ERUPTIONS No.15~19 ,ANNUAL REPORT OF THE WORLD VOLCANIC ERUPTIONS IN 1975~1979 ,Volcanolpgical Society of Japan International Associations of Volcanology and Chemistry of the Earth's Interior IUGG December ,1977~1981