Reventador (Ecuador) (Event 09-74)
Card 1774 (11 January 1974) Mid-December 1973 eruption from cone in SW corner of caldera
Sangay (Ecuador) (Event 09-74)
Card 1774 (11 January 1974) Continuing eruptive activity with frequent explosions
Erta Ale (Ethiopia, northeastern Africa) (Event 156-73)
Card 1775 (14 January 1974) Review of 1973 activity
Fukujin (Volcano Islands, Japan) (Event 11-74)
Card 1778 (21 January 1974) Explosive activity detected by hydrophone began in September 1973
Sakura-jima (Kyushu, Japan) (Event 139-73)
Card 1781 (23 January 1974) Frequent explosions in late November 1973
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1782 (23 January 1974) Eruption continuing in mid-December; island was 700 m long
Tongariro (North Island, New Zealand) (Event 19-74)
Card 1790 (05 February 1974) Steam and ash eruption in late January
Etna (Italy) (Event 20-74)
Card 1791 (06 February 1974) First W-flank eruption of this century rapidly builds cone
Card 1795 (12 February 1974) Vigorous and frequent explosive activity from the new crater
Card 1807 (25 February 1974) Eruption ended on 17 February
Izalco (El Salvador) (Event 21-74)
Card 1792 (07 February 1974) Thermal anomaly detected in 1973
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1793 (11 February 1974) Aerial observations in mid-January show continued lava flows and explosions
Fukujin (Volcano Islands, Japan) (Event 11-74)
Card 1794 (11 February 1974) Steam plume seen by fishing boats; active bubbling and water discoloration
Langila (New Britain Island, Papua New Guinea) (Event 96-73)
Card 1800 (19 February 1974) Large explosion from Crater 2 on 15 February
Karkar (Bismarck Sea, Papua New Guinea) (Event 24-74)
Card 1801 (19 February 1974) Mild Strombolian eruption is the first since 1895
Fonualei (Tonga Islands, Pacific Ocean)
Card 1802 (21 February 1974) Reported emission of steam, foam, and rocks
Great Sitkin (Aleutian Islands, USA) (Event 27-74)
Card 1804 (22 February 1974) Explosive activity and light-colored plume
Concepcion (Nicaragua) (Event 29-74)
Card 1808 (26 February 1974) Minor ash eruptions in December and January
Akutan (Aleutian Islands, USA) (Event 32-74)
Card 1812 (08 March 1974) Ship crew observes ash and tephra emission and lava flow
Reventador (Ecuador) (Event 09-74)
Card 1813 (12 March 1974) Explosive activity every 20-30 minutes in late February
Etna (Italy) (Event 20-74)
Card 1814 (14 March 1974) New vent SW of the 1974 cinder cone opens on 10-11 March
Fukujin (Volcano Islands, Japan) (Event 11-74)
Card 1832 (29 March 1974) Underwater sound signals essentially terminated on 26 January
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1833 (29 March 1974) Island has five cinder cones; lava flows entering the ocean
Chokai (Honshu, Japan) (Event 50-74)
Card 1835 (01 April 1974) Large ash eruptions on 1 March from the E side of the central cone
Card 1850 (30 April 1974) Intermittent variable actiivty; ashfall on 24 April
Tongariro (North Island, New Zealand) (Event 19-74)
Card 1839 (10 April 1974) Two vents active within the crater during overflight on 29 March
Karangetang (Sulawesi, Indonesia) (Event 54-74)
Card 1840 (15 April 1974) Increased summit activity since January; frequent earthquakes
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1866 (30 May 1974) Large lava flow on 1 May stretched to the W side of the new island
Sakura-jima (Kyushu, Japan) (Event 88-74)
Card 1886 (17 July 1974) Number of explosions increases to 93 in June
Niigata-Yake-yama (Honshu, Japan) (Event 96-74)
Card 1895 (29 July 1974) Eruption on 28 July causes ashfall over a wide area
Niigata-Yake-yama (Honshu, Japan) (Event 96-74)
Card 1904 (12 August 1974) Activity continuing from near summit and W-flank fissure
Sakura-jima (Kyushu, Japan) (Event 88-74)
Card 1908 (21 August 1974) Explosions continue; ashfall up to 70 km away
1974
