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What was erupting in the year...?

There were 69 confirmed eruptions at some point during 1973 from 65 different volcanoes; 41 of those were new eruptions that started during the year. A stop date with "(continuing)" indicates that the eruption was considered to be ongoing as of the date indicated. Data is reported through the last data update (17 March 2022). Information about more recent eruptions can be found in the Smithsonian / USGS Weekly Volcanic Activity Report.

Volcano Country Eruption Start Date Eruption Stop Date Max VEI
Concepcion Nicaragua 1973 Dec 24 1974 Jan 12 2
Fukutoku-Oka-no-Ba Japan 1973 Dec 18 1974 Feb 16 2
Fernandina Ecuador 1973 Dec 9 1973 Dec 16 ± 1 days 2
Iliwerung Indonesia 1973 Dec 5 1974 Aug 22 2
Reventador Ecuador 1973 Nov 16 ± 15 days 1974 Jul 16 ± 15 days 3
Pavlof United States 1973 Nov 12 1973 Nov 13 2
Kuchinoerabujima Japan 1973 Nov 5 1973 Nov 19 2
Ruapehu New Zealand 1973 Oct 31 1974 Oct 25 1
Paluweh Indonesia 1973 Oct 27 1973 Oct 28 2
Rumble III New Zealand 1973 Oct 15 1973 Oct 17 0
Gaua Vanuatu 1973 Oct 9 1974 Jan 21 2
Ulawun Papua New Guinea 1973 Oct 4 1973 Oct 19 2
Fukujin United States 1973 Sep 27 1974 Mar 5 1
Lokon-Empung Indonesia 1973 Sep 15 1974 Dec 16 ± 15 days 1
Atka Volcanic Complex United States 1973 Aug 25 ± 2 days Unknown 0
Slamet Indonesia 1973 Aug 16 ± 15 days Unknown 1
Chikurachki Russia 1973 Aug 10 1973 Sep 28 2
Kolokol Group Russia 1973 Jul 25 1973 Jul 26 (?) 1
Marapi Indonesia 1973 Jul 24 1973 Jul 24 2
Nevados de Chillan Chile 1973 Jul 16 ± 15 days 1986 Jul 2 ± 182 days 2
Chachadake [Tiatia] Japan - administered by Russia 1973 Jul 14 1973 Jul 28 4
Curacoa Tonga 1973 Jul 11 1973 Jul 16 3
Vailulu'u United States 1973 Jul 10 1973 Jul 10 0
Etorofu-Yakeyama [Grozny Group] Japan - administered by Russia 1973 May 16 1973 May 17 2
Raung Indonesia 1973 May 16 ± 15 days 1973 Oct 16 ± 15 days 1
Piton de la Fournaise France 1973 May 10 1973 Sep 5 (?) 2
Long Island Papua New Guinea 1973 Apr 16 ± 15 days 1974 Feb 28 2
Iliboleng Indonesia 1973 Apr 16 ± 15 days 1974 Apr 16 ± 15 days 2
Ambrym Vanuatu 1973 Apr 15 ± 5 days 1976 Oct 14 3
Nishinoshima Japan 1973 Apr 12 1974 May 5 ± 4 days 2
Akutan United States 1973 Mar 16 (?) ± 15 days 1973 May 16 ± 15 days 2
Langila Papua New Guinea 1973 Feb 24 ± 4 days 2000 Oct 16 (in or after) ± 15 days 3
Fuego Guatemala 1973 Feb 23 1973 Mar 23 2
Okataina New Zealand 1973 Feb 22 1973 Feb 22 1
Asamayama Japan 1973 Feb 1 1973 May 24 2
Dempo Indonesia 1973 Jan 24 1973 Jan 25 2
Vestmannaeyjar Iceland 1973 Jan 23 1973 Jun 28 3
Asosan Japan 1973 Jan 16 ± 15 days 1975 Jun 16 ± 15 days 2
Etorofu-Yakeyama [Grozny Group] Japan - administered by Russia 1973 Jan 16 ± 15 days 1973 Jan 16 ± 15 days 1
Jan Mayen Norway 1973 Jan 15 ± 45 days Unknown 1
Soputan Indonesia 1973 Jan 6 1973 May 27 2
Erebus Antarctica 1972 Dec 16 (in or before) ± 15 days 2022 Mar 17 (continuing) 2
Tongariro New Zealand 1972 Nov 22 1974 Aug 19 3
Ruapehu New Zealand 1972 Oct 22 1973 Jan 10 1
Paluweh Indonesia 1972 Oct 22 1973 Jan 16 3
Merapi Indonesia 1972 Oct 6 1985 Mar 16 ± 15 days 2
Bagana Papua New Guinea 1972 Jul 2 ± 182 days 1995 Jul 2 (in or after) ± 182 days 2
Krakatau Indonesia 1972 Jun 10 ± 3 days 1973 Jul 1 ± 30 days 2
Piton de la Fournaise France 1972 Jun 9 (?) 1973 Jan 16 (?) 2
Poas Costa Rica 1972 Feb 9 1973 Sep 8 2
Karangetang Indonesia 1972 Jan 16 ± 15 days 1976 Apr 5 3
Klyuchevskoy Russia 1971 Nov 16 ± 15 days 1973 Dec 16 ± 15 days 1
Etna Italy 1971 Sep 19 1979 Mar 16 (?) ± 15 days 2
Bezymianny Russia 1971 Mar 16 ± 15 days 1974 Dec 16 (in or after) ± 15 days 3
Karymsky Russia 1970 May 11 1982 Oct 11 3
Kilauea United States 1969 Feb 22 1974 Sep 19 0
Arenal Costa Rica 1968 Jul 29 2010 Dec 16 (?) ± 15 days 3
Semeru Indonesia 1967 Aug 31 2009 Mar 15 3
Erta Ale Ethiopia 1967 Jul 2 (in or before) ± 182 days 2022 Mar 17 (continuing) 0
Masaya Nicaragua 1965 Oct 10 (?) 1985 Apr 16 (?) ± 15 days 1
Pacaya Guatemala 1965 Jul 4 1989 Mar 10 3
Suwanosejima Japan 1956 Nov 16 ± 15 days 1984 May 16 ± 15 days 2
Aira Japan 1955 Oct 13 2016 Aug 22 3
Sangay Ecuador 1934 Aug 8 2011 Mar 2 3
Stromboli Italy 1934 Feb 2 2022 Mar 17 (continuing) 2
Dukono Indonesia 1933 Aug 13 2022 Mar 17 (continuing) 3
Nyiragongo DR Congo 1927 Mar 16 ± 15 days 1977 Jan 10 1
Santa Maria Guatemala 1922 Jun 22 2022 Mar 17 (continuing) 3
Yasur Vanuatu 1774 Jul 2 (in or before) ± 182 days 2022 Mar 17 (continuing) 3

List of Questions

Global Volcanism Program, 2013. Volcanoes of the World, v. 4.10.6 (24 Mar 2022). Venzke, E (ed.). Smithsonian Institution. Downloaded 25 May 2022. https://doi.org/10.5479/si.GVP.VOTW4-2013.