Piton de la Fournaise (Reunion Island) (Event 71-72)
Card 1535 (16 January 1973) Eruption observed from passing ship on 10 November 1972
Sakura-jima (Kyushu, Japan) (Event 60-72)
Card 1536 (17 January 1973) Frequent explosions in November and December 1972
Pacaya (Guatemala) (Event 08-73)
Card 1539 (19 January 1973) Ash eruptions and lava emission
Vestmannaeyjar (southern Iceland) (Event 11-73)
Card 1545 (23 January 1973) Fissure eruption emits lava flow; evacuation of about 5,000 people
Card 1547 (24 January 1973) Lava fountains at start of eruption preceded by earthquake swarm
Card 1549 (26 January 1973) Eruption clouds above 15,000 feet; lava continues to enter the harbor
Card 1551 (26 January 1973) Fountaining concentrated in N sector of fissure zone; 120-m-high cone built
Card 1552 (29 January 1973) About 15 million cubic meters of lava produced in first 40 hours of eruption
Card 1556 (31 January 1973) Thermal and visual satellite imagery shows eruption on 25 January
Asama (Honshu, Japan) (Event 19-73)
Card 1563 (07 February 1973) Explosion on 1 February the first since 1961
Card 1564-1565 (09 February 1973) Details of eruption; ashfall and seismicity
Card 1568 (14 February 1973) Small eruption on 6 February causes dense ashfalls 20 km away
Vestmannaeyjar (southern Iceland) (Event 11-73)
Card 1567 (13 February 1973) Lava flow area 3 km2 as of 13 February
Card 1569 (23 February 1973) Crater wall subsidence; lava flowing E and NE
Fuego (Guatemala) (Event 24-73)
Card 1573 (01 March 1973) Ash column rises to height of 12 km on 22 February
Card 1583 (16 March 1973) Ashfall in a 70-km radius during February-March eruption
Vestmannaeyjar (southern Iceland) (Event 11-73)
Card 1582 (12 March 1973) Tephra being blown out to sea; lava flow nearly closing harbor entrance
Card 1591 (26 March 1973) Lava has now covered at least 80 houses
Asama (Honshu, Japan) (Event 19-73)
Card 1585 (19 March 1973) Intermittent explosions during February
Wolf (Galapagos Islands, Ecuador) (Event 31-73)
Card 1588 (21 March 1973) Earthquake swarm near Isla Isabella
Paluweh (Lesser Sunda Islands, Indonesia) (Event 33-73)
Card 1590 (22 March 1973) Eruption ejects tephra 100 m and damages local vegetation
Cerro Hudson (southern Chile) (Event 43-73)
Card 1603 (11 April 1973) Eruption on 5 April causes mud avalanches that bury two people and hundreds of animals
Asama (Honshu, Japan) (Event 19-73)
Card 1614 (24 April 1973) Moderate explosion on 18 April after a month of silence
Vestmannaeyjar (southern Iceland) (Event 11-73)
Card 1615 (24 April 1973) Eruption is slowly abating; intermittent explosions and decreased lava production
Long Island (Offshore New Guinea, Papua New Guinea) (Event 58-73)
Card 1626 (08 May 1973) Small eruption within the crater lake on 18 April
Kilauea (Hawaii, USA) (Event 59-73)
Card 1628 (08 May 1973) Eruption on 5 May opens 600-foot-long fissure; high lava fountains
Akutan (Aleutian Islands, USA) (Event 71-73)
Card 1643 (22 May 1973) Ash and steam has been erupting for several months according to pilots
Cerro Hudson (southern Chile) (Event 43-73)
Card 1645 (24 May 1973) Temperature rise, not eruption, caused damaging April lahar
Fernandina (Galapagos Islands, Ecuador) (Event 83-73)
Card 1659 (19 June 1973) New eruptive products recognized during fieldwork
Tiatia (Kurile Islands, Russia) (Event 92-73)
Card 1677 (16 July 1973) Loud explosions and heavy local ashfall
Card 1684 (27 July 1973) Eruption cloud rises to 5-6 km; explosions every 40-60 seconds
Grozny Group (Kurile Islands, Russia) (Event 92-73)
Card 1684 (27 July 1973) Single weak explosion
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1678 (18 July 1973) White plume, discolored seawater, and floating pumice
Card 1687 (30 July 1973) Active bubbling under the surface; water discoloration caused by ash and pumice
Curacoa (Tonga Islands, Pacific Ocean) (Event 94-73)
Card 1679 (19 July 1973) Steam and boiling water seen from aircraft
Card 1685 (27 July 1973) Pumice belt is 13 km wide and 30-45 cm deep
Langila (New Britain Island, Papua New Guinea) (Event 96-73)
Card 1681 (20 July 1973) Lava emission from Crater 3 in mid-July
Curacoa (Tonga Islands, Pacific Ocean) (Event 94-73)
Card 1694 (13 August 1973) No evidence of activity during aerial reconnaissance on 29 July
Santa Maria (Guatemala) (Event 117-73)
Card 1711 (24 September 1973) Violent eruption on 16 September produced large volume of ash
Card 1714 (27 September 1973) Recent eruption caused large avalanche and nuee ardente; ash cloud rose 8 km
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1712 (25 September 1973) Eruption builds new island; vigorous eruptive activity
Ulawun (New Britain Island, Papua New Guinea) (Event 138-73)
Card 1736 (31 October 1973) Eruption during 4-19 October produces lava flows and ejecta from five vents
Nishino-shima (Volcano Islands, Japan) (Event 93-73)
Card 1737 (01 November 1973) Fissure eruption has formed a chain of cinder cones above the sea surface
Sakura-jima (Kyushu, Japan) (Event 139-73)
Card 1738 (01 November 1973) Minami-dake summit crater quite active throughout 1973
Pavlof (Alaska, USA) (Event 144-73)
Card 1744 (14 November 1973) Harmonic tremor coincides with report of observed lava flow
Kilauea (Hawaii, USA) (Event 59-73)
Card 1747 (19 November 1973) Mauna Ulu crater overflows; fountaining from fissures around Pauahi Crater
Wolf (Galapagos Islands, Ecuador) (Event 147-73)
Card 1749 (30 November 1973) Park wardens hear strong and constant rumbling from the caldera
Fernandina (Galapagos Islands, Ecuador) (Event 147-73)
Card 1749 (30 November 1973) More accurate date for 1972 eruption
Fernandina (Galapagos Islands, Ecuador) (Event 150-73)
Card 1752 (13 December 1973) Visible and infrared satellite observations of eruption
Card 1757 (17 December 1973) Plume observations from space
Card 1760 (26 December 1973) Additional details of 10-13 December eruption from ground-based reports
Wolf (Galapagos Islands, Ecuador) (Event 150-73)
Card 1752 (13 December 1973) Space-based observations of activity
Card 1757 (17 December 1973) Infrared hot-spot probably not eruption related
Darwin (Galapagos Islands, Ecuador) (Event 150-73)
Card 1752 (13 December 1973) Hot-spots on E flank detected on infrared satellite imagery
Card 1757 (17 December 1973) Infrared hot-spot probably not eruption related
Erta Ale (Ethiopia, northeastern Africa) (Event 156-73)
Card 1759 (20 December 1973) Both craters still contain active crater lakes; recent N-flank eruption