Steven Dutch, Professor Emeritus, Natural and Applied Sciences, University of Wisconsin - Green Bay
Date | Location | Richter Magnitude | Seismic MomentMagnitude |
May 22, 1960 | Chile | 8.5 | 9.5 |
Mar 28, 1964 | Alaska | 8.4 | 9.2 |
Mar 9, 1957 | Aleutians | 8.1 | 9.1 |
Mar. 11, 2011 | Sendai, Japan | N/a | 9.0-9.1 |
Nov 4, 1952 | Kamchatka | 8.2 | 9.0 |
Dec. 26, 2004 | Sumatra | N/a | 9.0 |
Jan 31, 1906 | Ecuador | 8.2 | 8.8 |
Feb. 27, 2010 | Chile | N/a | 8.8 |
Feb 4, 1965 | Aleutians | 8.2 | 8.7 |
Nov 11, 1922 | Chile | 8.3 | 8.5 |
Mar 2, 1933 | Japan | 8.5 | 8.4 |
Aug 15, 1950 | India-China | 8.6 | |
Dec 16, 1920 | N. China | 8.6 |
Source: K. Abe, Magnitudes and Moments of Earthquakes, in Global Earth Physics, A Handbook of Physical Constants, American Geophysical Union Reference Shelf Volume 1, p. 206-213. Seismic moment magnitudes determined by recalculation from seismic records for events prior to 2004.
The December 2004 Sumatra event is the first Magnitude 9.0 event since the general adoption of the seismic moment magnitude scale; the old Richter Scale is no longer applied to such events.
Year Month Day | Mag | Deaths | Location | Notes |
July 5, 1201 | 1,100,000 | Egypt-Syria | 1 | |
Jan. 23, 1556 | 830,000 | China: Shanxi | 2 | |
July 27, 1976 | 8 | 655,237 | NE China, Tangshan | 3 |
1139 | 6.8 | 300,000 | Caucasus | |
1662 | 300,000 | China | ||
Oct. 11, 1737 | 300,000 | India: Calcutta | 4 | |
115 | 260,000 | Turkey: Antioch | ||
1139 | 230,000 | Syria: Aleppo | ||
1876 | 215,000 | India: Bay of Bengal, Andaman Islands | ||
Dec. 22, 856 | 200,000 | Iran | ||
1703 | 200,000 | Japan: Jeddo | ||
Jan. 8, 1780 | 200,000 | Iran: Tabriz | ||
Dec. 16, 1920 | 8.5 | 200,000 | China: Gansu and Shanxi | |
May 22, 1927 | 8.3 | 200,000 | China: Qinghai | |
Jan. 12, 2010 | 7.0 | 200,000 | Haiti | 12 |
Dec. 14, 893 | 180,000 | Iran-Armenia | ||
Dec. 26, 2004 | 9.0 | 160,000 | Sumatra | 10 |
Sept. 1, 1923 | 8.2 | 142,807 | Japan: Tokyo-Yokohama | 5 |
Dec. 30, 1730 | 137,000 | Japan: Hokkaido | ||
Nov. 23, 533 | 130,000 | Syria-Turkey | 6 | |
Dec. 28, 1908 | 7.5 | 110,000 | Italy: Messina, Sicily | |
1007 | 100,000 | Iraq | ||
1138 | 100,000 | Egypt-Syria | ||
1201 | 100,000 | Greece: Aegean | 7 | |
Sept. 27, 1290 | 6.7 | 100,000 | China: Chihli | |
Jan. 9, 1693 | 100,000 | Italy: Sicily | ||
Nov. 30, 1731 | 100,000 | China: Beijing | ||
1779 | 100,000 | Iran: Tabriz | 8 | |
1780 | 100,000 | Iran-Caucasus | 8 | |
Aug. 26, 1883 | 100,000 | Java | 9 | |
May 31, 1970 | 7.8 | 70,000 | Peru | 11 |
Source: Catalog of Significant Earthquakes, USGS
Even for modern events, casualty totals are hard to get accurately (see Note3). Ancient events are often wild guesses. Authors may make mistakes as to location and date when copying records from other sources. This list includes all events with more than 100,000 deaths in the best available global summary of major earthquakes. The two pre-instrumental magnitudes are estimated from physical effects.
Remarks
Year | Volcano | Location | Ejecta km3 | Remarks |
4650 B.C. | Mount Mazama | Oregon | 100+ | Formed Crater Lake |
4300 B.C. | Kikai | Ryukyu Islands, Japan | 100+ | Pyroclastic flows traveled 100 km, reached southern Japan. Southern Kyushu devastated. |
1470 B.C. | Santorini | Greece | 10+ | Destroyed Minoan civilization |
186 A. D. | Taupo | New Zealand | 80+ | Pyroclastic flows travelled 100 km |
260 | Ilopango | El Salvador | 10+ | |
536 | Rabaul | New Guinea | 10+ | Global climatic effects |
850 | Hekla | Iceland | 10+ | |
1010 | Baitoushan | China-Korea | 150 | |
1783 | Laki | Iceland | 1 | Largest historic fissure flow |
1815 | Tambora | Indonesia | 150 | Global climatic effects |
1883 | Krakatau | Indonesia | 20+ | Blast heard 5,000 km away |
1912 | Katmai | Alaska | 10+ | |
1991 | Pinatubo | Philippines | 10 |
Ejecta refers to cubic kilometers of ash erupted. All figures are estimates. Since 10,000 B.C., over 50 eruptions are known to have vented more than 10 cubic km of ash (2006 data from the Smithsonian Global Volcanism Program). Laki, 1783 isalso included as the largest historic lava flow. Dates of first six events are from radiocarbon datesand are approximate.
Much larger events are recorded in the geologic past but we cannot claim acomplete record. A few examples:
Source, T. Simkin and others, 1984, Volcanoes of the World, Stroudsburg, PA, Hutchinson Ross, 232p.
Date | Volcano | Location | Deaths | Remarks |
April 10-12, 1815 | Tambora, | Indonesia | 92000 | Ash falls, Tsunami, Disease, Starvation |
Aug. 26-28, 1883 | Krakatoa | Indonesia | 36000 | Ash falls, Tsunami |
May 8, 1902 | Mount Pelee | Martinique | 28000 | Pyroclastic Flow |
Nov. 13, 1985 | Nevado Ruiz | Colombia | 23000 | Mudflow |
Aug. 24, 79 A.D. | Vesuvius | Italy | 16000 | Ash falls and Pyroclastic Flows. The famous Pompeii eruption. |
May 21, 1792 | Unzen | Japan | 14500 | |
1586 | Kelut | Java | 10000 | |
June 8, 1783 | Laki | Iceland | 9350 | Fissure Flow, Disease, Starvation |
May 19, 1919 | Kelut | Java | 5000 | |
Dec. 15, 1631 | Vesuvius | Italy | 4000 | |
April 24, 1902 | Santa Maria | Guatemala | 4000 | Ash falls, Disease, Starvation |
Aug. 12, 1772 | Papandayan | Java | 3000 | |
Jan. 27, 1951 | Lamington | New Guinea | 3000 | Pyroclastic Flow. Volcano was not known to be active before the eruption. |
Mar. 28, 1982 | El Chichon | Mexico | 1880 | Ash falls |
Aug. 21, 1986 | Lake Nyos | Cameroon | 1700 | Carbon dioxide emission from volcanic lake |
Jan. 10, 1977 | Nyiragongo | Congo | 70 - 100's? | Lava flow from sudden drainage of lava lake. |
Note the near absence of reference to lava flows, which rarely result in fatalities. Even the great Laki fissure flow of 1783 produced casualties mostly by ecological disruption. Before the advent of telecommunications and air transport, ecological disruption was the major cause of loss of life in eruptions, with building collapse due to shaking and ash fall probably next most important.
The 1977 event from Nyiragongo is probably the largest recorded direct loss of life from lava flows. Nyiragongo presents the paradox of a steep-sided stratovolcano with extremely fluid lava, possibly because of a recent change in magma composition. When the crater wall failed, lava flows moved downhill at up to 100 km/hour, overwhelming villages without warning. The disaster happened at night, catching many people asleep. In 2002 a flow destroyed nearly half of the city of Goma (population several hundred thousand) and caused some fatalities, easily the worst invasion of a city by lava flows in history.
Volcanoes with the largest number of Holocene explosive eruptions. Nice geographic spread. The sixteen volcanoes are distributed among twelve different countries.
Volcano | Location | Number of Eruptions |
Arenal | Costa Rica | 19 |
Pelee | Martinique, West Indies | 19 |
Ibusuki Volcanic Field | Kyushu, Japan | 15 |
Taupo | New Zealand | 15 |
Hekla | Iceland | 13 |
Vesuvius | Italy | 13 |
Katla | Iceland | 12 |
Avachinsky | Kamchatka, Russia | 12 |
Cotopaxi | Ecuador | 10 |
Raoul Island | Kermadec Islands | 9 |
Cerro Bravo | Colombia | 8 |
Colima | Mexico | 8 |
Fuego | Guatemala | 8 |
Ksudach | Kamchatka, Russia | 8 |
Sakura-Jima | Kyushu, Japan | 8 |
St. Helens | Washington, USA | 8 |
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Created 24 April 2002, Last Update 15 January 2020