This is a list of earthquakes in 1981. Earthquakes of less than magnitude 6 are not included, unless they result in damage and/or casualties, or are notable for some other reason. Events in remote areas will not be listed but included in statistics and maps. Countries are entered on the lists in order of their status in this particular year. All dates are listed according to UTC time. Maximum intensities are indicated on the Modified Mercalli intensity scale and are sourced from United States Geological Survey (USGS) ShakeMap data. 1981 was another year of below average activity. The number of magnitude 7.0+ events was higher than in 1980, but at 10 was still below normal. The largest event was a magnitude 7.7 which struck Samoa in September. Other areas impacted by large events were Greece, New Zealand, Mexico, and Chile. Out of the 6,700 deaths in 1981, the majority were in Iran. Over the summer there were two large events caused 3,000 deaths and 1,500 deaths. In January, Indonesia and China were struck by events which left a combined 450 deaths.

By death toll Rank Death toll Magnitude Location MMI Depth (km) Date 1 , Kerman Province 1 , Kerman Province 2 , Papua (province) 3 , Gilgit-Baltistan 4 , Sichuan Province 5 , Thessaly 6 , Norte de Santander Department 7 Italy, Campania 8 , Huancavelica Region Listed are earthquakes with at least 10 dead.

By magnitude Rank Magnitude Death toll Location MMI Depth (km) Date 1 2 , off the south coast of South Island 3 , Guerrero = 4 , off the coast of Valparaíso Region = 4 , Aegean Sea = 5 , Kerman Province = 5 , Kermadec Islands = 6 , Near Islands, Alaska = 6 , southeast of the Loyalty Islands, New Caledonia = 6 Listed are earthquakes with at least 7.0 magnitude.

By month

January

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , off the east coast of Honshu 6.9 33.0 A large foreshock of magnitude 6.2 struck minutes earlier. , Papua (province) 6.7 33.0 305 people were killed in the 1981 Irian Jaya earthquake. At least 51 people were injured. Property damage costs were $5 million (1981 rate). 305 51 , off the east coast of Honshu 6.4 20.0 Aftershock of January 18 event. , southern Hokkaido 6.3 116.0 , Sichuan Province 6.8 33.0 The 1981 Dawu earthquake caused 150 deaths and 489 injuries. 2,992 homes were destroyed. Costs reached $5 million (1981 rate). 150 489 , Rat Islands, Alaska 7.0 33.0

February

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , Aïn Defla Province 5.7 10.0 Homes that were previously damaged in the 1980 El Asnam earthquake in October 1980 were destroyed. Italy, Campania 4.6 10.0 12 people died and some property damage was reported. Costs were $500,000 (1981 rate). 12 , southeast of Loyalty Islands, New Caledonia 6.7 29.9 , western Transvaal (part of the present-day province of North West) 4.7 33.0 4 deaths were caused in a mine. 4 , Thessaly 6.7 33.0 The 1981 Gulf of Corinth earthquakes were a series of events that caused destruction across central Greece in late February and early March. This event left 22 people dead and 400 injured. 8,000 homes were destroyed. Damage costs were $812 million (1981 rate). 22 400 , Gulf of Corinth 6.4 33.0 Further casualties and damage were caused.

March

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , Thessaly 6.4 28.5 The 1981 Gulf of Corinth earthquakes were a series of events that caused destruction across central Greece in late February and early March. 1 person was killed and 9 people were injured. Further damage was caused. 1 9 , Attica (region) 5.5 33.0 1 person died and further damage was caused. 1 , Epirus 5.6 31.1 2 people were killed and 150 homes were destroyed. 2 , off the coast of Valparaíso Region 6.2 46.3

April

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , Ayacucho Region 5.3 38.3 8 people died and another 15 were hurt. Some property damage was caused. 8 15 6.9 33.0 , southern California 5.8 18.9 $1.5 million (1981 rate) in damages was caused by the 1981 Westmorland earthquake.

May

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , Badakhshan Province 6.3 228.7 , off the coast of Santa Elena Province 6.4 33.0 , off the south coast of South Island 7.6 33.0 , Western Greece 5.0 33.0 9 homes were destroyed and 100 were damaged. , East New Britain Province 6.0 70.5

June

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured 6.0 33.0 Italy, western Sicily 4.9 18.7 6 injuries were caused as well as damage to 100 homes. 6 , southern Qinghai Province 6.0 10.0 , Kerman Province 6.7 33.0 Joint deadliest event in 1981.The 1981 Golbaf earthquake caused 3,000 deaths and at least 101 injuries. Major damage was caused. Costs reached $5 million (1981 rate). 3,000 101 , Samangan Province 5.5 24.0 1 person died and 2 were injured. 1 2 , Huancavelica Region 5.2 23.7 10 people were killed and at least 51 were injured. Some property damage was caused with costs reaching $5 million (1981 rate). 10 51

July

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , southeast of the Loyalty Islands, New Caledonia 7.0 33.0 7.0 30.0 Some damage was caused. , West Azarbaijan Province 5.6 33.0 Damage was sustained in several villages. , Kerman Province 7.1 33.0 Joint deadliest event in 1981. This was the second major event in Iran in the space of 6 weeks. 1,500 people died in the 1981 Sirch earthquake. 1,000 people were injured. Extensive damage was caused. Costs were $1 billion (1981 rate). 1,500 1,000

August

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , SR Bosnia and Herzegovina 5.5 15.5 44 people were hurt and some damage was caused. Costs were $5 million (1981 rate). 44

September

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured 7.7 25.0 Largest event in 1981 A tsunami was observed which swept ashore on some of the islands. At least 1 person drowned and some damage was caused. 1 , Kuril Islands, Russia 6.6 45.0 Some damage was caused. , Bohol 6.0 644.5 , Gilgit-Baltistan 6.2 33.0 During the 1981 Darel Valley earthquake, 220 people were killed and 2,500 were injured. Major damage was reported. Costs were at least $5 million (1981 rate). 220 2,500 , East Kazakhstan Region, Kazakhstan 6.0 0.0 Nuclear test. , southeast of the Loyalty Islands, New Caledonia 6.6 30.0

October

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , off the east coast 6.3 33.0 6.4 50.2 , off the east coast of Honshu 6.0 47.0 , off the coast of Valparaíso Region 7.2 33.0 1 person was killed indirectly in a car accident. 1 , East Kazakhstan Region, Kazakhstan 6.0 0.0 Nuclear test. , Norte de Santander Department 5.4 53.6 15 deaths were caused as well as at least 101 injuries. Major damage was reported. 15 101 , Guerrero 7.3 33.0 3 people were killed and 28 were injured in the 1981 Playa Azul earthquake. Some damage was caused. 3 28

November

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured 6.3 33.0 , off the coast of East Sepik Province 6.9 33.0 Some damage was reported. , Valparaíso Region 6.8 65.2 Some damage was reported. , Hebei Province 5.5 14.0 Some damage was reported. , Aswan Governorate 5.3 10.0 11 homes sustained damage. , off the north coast of Luzon 6.5 24.0 Some damage was caused. , southeast of the Loyalty Islands, New Caledonia 6.7 29.8 A magnitude 6.2 aftershock struck shortly afterward.

December

+DateCountry and location Mw Depth (km) MMINotes Casualties Dead Injured , Balochistan, Pakistan 4.6 33.0 6 people were killed and 12 were hurt. 45 homes were damaged or destroyed. 6 12 , Aegean Sea 7.2 10.0 Some damage was caused. , Kermadec Islands 6.8 28.0 Foreshock to December 26 event. , Kermadec Islands 7.1 33.0 , East Kazakhstan Region, Kazakhstan 6.2 0.0 Nuclear test. , Aegean Sea 6.5 13.3 Aftershock of December 19 event. Some damage was caused.

References