List of earthquakes in 1981

Earthquakes in 1981

class=notpageimage| Approximate epicenters of the earthquakes in 1981 4.0–5.9 magnitude 6.0–6.9 magnitude 7.0–7.9 magnitude 8.0+ magnitude
Strongest magnitude	Western Samoa, (Magnitude 7.7) September 1
Deadliest	Iran 2 events each caused 3,000 deaths.
Total fatalities	6,762
Number by magnitude
9.0+	0
8.0–8.9	0
7.0–7.9	10
6.0–6.9	76
5.0–5.9	1,176
4.0–4.9	3,160
←  1980 1982  →

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 there, each causing 3,000 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	3,000	6.7	Iran, Kerman Province	VIII (Severe)	33.0	June 11
1	3,000	7.1	Iran, Kerman Province	X (Extreme)	33.0	July 28
2	305	6.7	Indonesia, Papua (province)	VII (Very strong)	33.0	January 19
3	220	6.2	Pakistan, Gilgit-Baltistan	VI (Strong)	33.0	September 12
4	150	6.8	China, Sichuan Province	IX (Violent)	33.0	January 23
5	22	6.7	Greece, Thessaly	IX (Violent)	33.0	February 24
6	15	5.4	Colombia, Norte de Santander Department	VII (Very strong)	53.6	October 18
7	12	4.6	Italy, Campania	VIII (Severe)	10.0	February 14
8	10	5.2	Peru, Huancavelica Region	VI (Strong)	23.7	June 22

Listed are earthquakes with at least 10 dead.

By magnitude

Rank	Magnitude	Death toll	Location	MMI	Depth (km)	Date
1	7.7	1	Western Samoa	VI (Strong)	25.0	September 1
2	7.6	0	New Zealand, off the south coast of South Island	IV (Light)	33.0	May 25
3	7.3	3	Mexico, Guerrero	VIII (Severe)	33.0	October 25
= 4	7.2	1	Chile, off the coast of Valparaíso Region	VI (Strong)	33.0	October 16
= 4	7.2	0	Greece, Aegean Sea	VII (Very strong)	10.0	December 19
= 5	7.1	3,000	Iran, Kerman Province	X (Extreme)	33.0	July 28
= 5	7.1	0	New Zealand, Kermadec Islands	( )	33.0	December 26
= 6	7.0	0	United States, Near Islands, Alaska	V (Moderate)	33.0	January 30
= 6	7.0	0	France, southeast of the Loyalty Islands, New Caledonia	( )	33.0	July 6
= 6	7.0	0	Vanuatu	V (Moderate)	30.0	July 15

Listed are earthquakes with at least 7.0 magnitude.

By month

January

January

Strongest magnitude	7.0 Mw   United States
Deadliest	6.8 Mw   Indonesia 305 deaths
Total fatalities	455
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	11
5.0–5.9	125
4.0–4.9	233

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
18 [1] [2]	Japan, off the east coast of Honshu	6.9	33.0	V	A large foreshock of magnitude 6.2 struck minutes earlier.
19 [3] [4] [5]	Indonesia, Papua (province)	6.7	33.0	VII	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
22 [6]	Japan, off the east coast of Honshu	6.4	20.0		Aftershock of January 18 event.
23 [7] [8]	Japan, southern Hokkaido	6.3	116.0	VI
23 [9] [10] [11]	China, Sichuan Province	6.8	33.0	IX	The 1981 Dawu earthquake caused 150 deaths and 489 injuries. 2,992 homes were destroyed. Costs reached $5 million (1981 rate).	150	489
30 [12] [13]	United States, Rat Islands, Alaska	7.0	33.0	V

February

February

Strongest magnitude	6.7 Mw 2 events reached this magnitude.
Deadliest	6.7 Mw   Greece 22 deaths
Total fatalities	38
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	6
5.0–5.9	101
4.0–4.9	248

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [14] [15]	Algeria, Aïn Defla Province	5.7	10.0	VII	Homes that were previously damaged in the 1980 El Asnam earthquake in October 1980 were destroyed.
14 [16] [17] [18]	Italy, Campania	4.6	10.0	VIII	12 people died and some property damage was reported. Costs were $500,000 (1981 rate).	12
17 [19]	France, southeast of Loyalty Islands, New Caledonia	6.7	29.9
18 [20] [21]	South Africa, western Transvaal (part of the present-day province of North West)	4.7	33.0	VI	4 deaths were caused in a mine.	4
24 [22] [23] [24]	Greece, Thessaly	6.7	33.0	IX	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
25 [25] [26]	Greece, Gulf of Corinth	6.4	33.0	IX	Further casualties and damage were caused.

March

March

Strongest magnitude	6.4 Mw 2 events reached this magnitude.
Deadliest	5.6 Mw   Greece 2 deaths
Total fatalities	4
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	5
5.0–5.9	111
4.0–4.9	242

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
4 [27] [28] [29]	Greece, Thessaly	6.4	28.5	IX	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
7 [30] [31]	Greece, Attica (region)	5.5	33.0	VI	1 person died and further damage was caused.	1
10 [32] [33] [34]	Greece, Epirus	5.6	31.1	VIII	2 people were killed and 150 homes were destroyed.	2
23 [35] [36]	Chile, off the coast of Valparaíso Region	6.2	46.3	VI

April

April

Strongest magnitude	6.9 Mw   Vanuatu
Deadliest	5.3 Mw   Peru 8 deaths
Total fatalities	8
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	5
5.0–5.9	84
4.0–4.9	265

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
18 [37] [38]	Peru, Ayacucho Region	5.3	38.3	V	8 people died and another 15 were hurt. Some property damage was caused.	8	15
24 [39] [40]	Vanuatu	6.9	33.0	VII
26 [41] [42] [43]	United States, southern California	5.8	18.9	VIII	$1.5 million (1981 rate) in damages was caused by the 1981 Westmorland earthquake.

May

May

Strongest magnitude	7.6 Mw   New Zealand
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	5
5.0–5.9	97
4.0–4.9	247

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
2 [44] [45]	Afghanistan, Badakhshan Province	6.3	228.7	IV
6 [46] [47]	Ecuador, off the coast of Santa Elena Province	6.4	33.0	VI
25 [48] [49]	New Zealand, off the south coast of South Island	7.6	33.0	IV
27 [50] [51]	Greece, Western Greece	5.0	33.0	V	9 homes were destroyed and 100 were damaged.
28 [52] [53]	Papua New Guinea, East New Britain Province	6.0	70.5	V

June

June

Strongest magnitude	6.7 Mw   Iran
Deadliest	6.7 Mw   Iran 3,000 deaths
Total fatalities	3,011
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	7
5.0–5.9	90
4.0–4.9	266

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [54]	Tonga	6.0	33.0
7 [55] [56]	Italy, western Sicily	4.9	18.7	V	6 injuries were caused as well as damage to 100 homes.		6
9 [57] [58]	China, southern Qinghai Province	6.0	10.0	VIII
11 [59] [60] [61]	Iran, Kerman Province	6.7	33.0	VIII	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
13 [62] [63]	Afghanistan, Samangan Province	5.5	24.0	VI	1 person died and 2 were injured.	1	2
22 [64] [65] [66]	Peru, Huancavelica Region	5.2	23.7	VI	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

July

Strongest magnitude	7.1 Mw   Iran
Deadliest	7.1 Mw   Iran 3,000 deaths
Total fatalities	3,000
Number by magnitude
8.0–8.9	0
7.0–7.9	3
6.0–6.9	3
5.0–5.9	100
4.0–4.9	343

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
6 [67]	France, southeast of the Loyalty Islands, New Caledonia	7.0	33.0
15 [68] [69]	Vanuatu	7.0	30.0	V	Some damage was caused.
23 [70] [71]	Iran, West Azarbaijan Province	5.6	33.0	VII	Damage was sustained in several villages.
28 [72] [73] [74]	Iran, Kerman Province	7.1	33.0	X	Joint deadliest event in 1981. This was the second major event in Iran in the space of 6 weeks. 3,000 people died in the 1981 Sirch earthquake. 1,000 people were injured. Extensive damage was caused. Costs were $1 billion (1981 rate).	3,000	1,000

August

August

Strongest magnitude	6.0 Mw   Soviet Union, Russia
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	1
5.0–5.9	78
4.0–4.9	283

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
13 [75] [76] [77]	Yugoslavia, SR Bosnia and Herzegovina	5.5	15.5	VIII	44 people were hurt and some damage was caused. Costs were $5 million (1981 rate).		44

September

September

Strongest magnitude	7.7 Mw   Western Samoa
Deadliest	6.2 Mw   Pakistan 220 deaths
Total fatalities	221
Number by magnitude
8.0–8.9	0
7.0–7.9	1
6.0–6.9	9
5.0–5.9	102
4.0–4.9	309

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [78] [79] [80]	Western Samoa	7.7	25.0	VI	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
3 [81] [82]	Soviet Union, Kuril Islands, Russia	6.6	45.0	VI	Some damage was caused.
4 [83] [84]	Philippines, Bohol	6.0	644.5	VII
12 [85] [86] [87]	Pakistan, Gilgit-Baltistan	6.2	33.0	VI	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
13 [88]	Soviet Union, East Kazakhstan Region, Kazakhstan	6.0	0.0		Nuclear test.
17 [89]	France, southeast of the Loyalty Islands, New Caledonia	6.6	30.0

October

October

Strongest magnitude	7.3 Mw   Mexico
Deadliest	5.4 Mw   Colombia 15 deaths
Total fatalities	19
Number by magnitude
8.0–8.9	0
7.0–7.9	2
6.0–6.9	8
5.0–5.9	91
4.0–4.9	229

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
4 [90] [91]	Papua New Guinea, off the east coast	6.3	33.0	VI
9 [92] [93]	Solomon Islands	6.4	50.2	V
15 [94] [95]	Japan, off the east coast of Honshu	6.0	47.0	IV
16 [96] [97] [98]	Chile, off the coast of Valparaíso Region	7.2	33.0	IV	1 person was killed indirectly in a car accident.	1
18 [99]	Soviet Union, East Kazakhstan Region, Kazakhstan	6.0	0.0		Nuclear test.
18 [100] [101] [102]	Colombia, Norte de Santander Department	5.4	53.6	VII	15 deaths were caused as well as at least 101 injuries. Major damage was reported.	15	101
25 [103] [104] [105]	Mexico, Guerrero	7.3	33.0	VIII	3 people were killed and 28 were injured in the 1981 Playa Azul earthquake. Some damage was caused.	3	28

November

November

Strongest magnitude	6.9 Mw   Papua New Guinea
Total fatalities	0
Number by magnitude
8.0–8.9	0
7.0–7.9	0
6.0–6.9	11
5.0–5.9	96
4.0–4.9	226

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
4 [106] [107]	Tonga	6.3	33.0	VI
6 [108] [109]	Papua New Guinea, off the coast of East Sepik Province	6.9	33.0	VIII	Some damage was reported.
7 [110] [111]	Chile, Valparaíso Region	6.8	65.2	VII	Some damage was reported.
8 [112] [113]	China, Hebei Province	5.5	14.0	VII	Some damage was reported.
14 [114] [115] [116]	Egypt, Aswan Governorate	5.3	10.0	VIII	11 homes sustained damage.
22 [117] [118]	Philippines, off the north coast of Luzon	6.5	24.0	VI	Some damage was caused.
24 [119]	France, southeast of the Loyalty Islands, New Caledonia	6.7	29.8		A magnitude 6.2 aftershock struck shortly afterward.

December

December

Strongest magnitude	7.2 Mw   Greece
Deadliest	4.6 Mw   Pakistan 6 deaths
Total fatalities	6
Number by magnitude
8.0–8.9	0
7.0–7.9	2
6.0–6.9	5
5.0–5.9	101
4.0–4.9	269

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
12 [120] [121] [122]	Pakistan, Balochistan, Pakistan	4.6	33.0	IV	6 people were killed and 12 were hurt. 45 homes were damaged or destroyed.	6	12
19 [123] [124] [125]	Greece, Aegean Sea	7.2	10.0	VII	Some damage was caused.
24 [126]	New Zealand, Kermadec Islands	6.8	28.0		Foreshock to December 26 event.
26 [127]	New Zealand, Kermadec Islands	7.1	33.0
27 [128]	Soviet Union, East Kazakhstan Region, Kazakhstan	6.2	0.0		Nuclear test.
27 [129] [130]	Greece, Aegean Sea	6.5	13.3	VI	Aftershock of December 19 event. Some damage was caused.

References

1. "M 6.9 - 101 km ESE of ?funato, Japan". United States Geological Survey. January 18, 1981. Retrieved June 25, 2021.
2. "M 6.9 - 101 km ESE of ?funato, Japan". United States Geological Survey. January 18, 1981. Retrieved June 25, 2021.
3. "M 6.7 - 268 km SW of Abepura, Indonesia". United States Geological Survey. January 19, 1981. Retrieved June 25, 2021.
4. "M 6.7 - 268 km SW of Abepura, Indonesia". United States Geological Survey. January 19, 1981. Retrieved June 25, 2021.
5. "Significant Earthquake: INDONESIA: NEW GUINEA: IRIAN JAYA: JAYAWIJAYA MTS". National Geophysical Data Center. January 19, 1981. Retrieved June 25, 2021.
6. "M 6.4 - 122 km E of Ishinomaki, Japan". United States Geological Survey. January 22, 1981. Retrieved June 25, 2021.
7. "M 6.3 - 29 km NW of Shizunai-furukawach?, Japan". United States Geological Survey. January 23, 1981. Retrieved June 25, 2021.
8. "M 6.3 - 29 km NW of Shizunai-furukawach?, Japan". United States Geological Survey. January 23, 1981. Retrieved June 25, 2021.
9. "M 6.8 - 131 km NW of Kangding, China". United States Geological Survey. January 23, 1981. Retrieved June 25, 2021.
10. "M 6.8 - 131 km NW of Kangding, China". United States Geological Survey. January 23, 1981. Retrieved June 25, 2021.
11. "Significant Earthquake: CHINA: SICHUAN PROVINCE". National Geophysical Data Center. January 23, 1981. Retrieved June 25, 2021.
12. "M 7.0 - 243 km ESE of Attu Station, Alaska". United States Geological Survey. January 30, 1981. Retrieved June 25, 2021.
13. "M 7.0 - 243 km ESE of Attu Station, Alaska". United States Geological Survey. January 30, 1981. Retrieved June 25, 2021.
14. "M 5.7 - 19 km N of El Abadia, Algeria". United States Geological Survey. February 1, 1981. Retrieved June 25, 2021.
15. "M 5.7 - 19 km N of El Abadia, Algeria". United States Geological Survey. February 1, 1981. Retrieved June 25, 2021.
16. "M 4.6 - 2 km NNE of Rotondi, Italy". United States Geological Survey. February 14, 1981. Retrieved June 25, 2021.
17. "M 4.6 - 2 km NNE of Rotondi, Italy". United States Geological Survey. February 14, 1981. Retrieved June 25, 2021.
18. "Significant Earthquake: ITALY: S". National Geophysical Data Center. February 14, 1981. Retrieved June 25, 2021.
19. "M 6.7 - 156 km E of Tadine, New Caledonia". United States Geological Survey. February 17, 1981. Retrieved June 25, 2021.
20. "M 4.7 - 25 km NNW of Klerksdorp, South Africa". United States Geological Survey. February 18, 1981. Retrieved June 25, 2021.
21. "M 4.7 - 25 km NNW of Klerksdorp, South Africa". United States Geological Survey. February 18, 1981. Retrieved June 25, 2021.
22. "M 6.7 - 5 km SW of Domvraína, Greece". United States Geological Survey. February 24, 1981. Retrieved June 25, 2021.
23. "M 6.7 - 5 km SW of Domvraína, Greece". United States Geological Survey. February 24, 1981. Retrieved June 25, 2021.
24. "Significant Earthquake: GREECE: ATHENS-EASTERN GULF OF CORINTH". National Geophysical Data Center. February 24, 1981. Retrieved June 25, 2021.
25. "M 6.4 - 13 km SSW of Kaparéllion, Greece". United States Geological Survey. February 25, 1981. Retrieved June 25, 2021.
26. "M 6.4 - 13 km SSW of Kaparéllion, Greece". United States Geological Survey. February 25, 1981. Retrieved June 25, 2021.
27. "M 6.4 - 3 km WSW of Erythrés, Greece". United States Geological Survey. March 4, 1981. Retrieved June 25, 2021.
28. "M 6.4 - 3 km WSW of Erythrés, Greece". United States Geological Survey. March 4, 1981. Retrieved June 25, 2021.
29. "Significant Earthquake: GREECE: ATHENS-CORINTH-KHALIS". National Geophysical Data Center. March 4, 1981. Retrieved June 25, 2021.
30. "M 5.5 - 2 km NNW of Vília, Greece". United States Geological Survey. March 7, 1981. Retrieved June 25, 2021.
31. "M 5.5 - 2 km NNW of Vília, Greece". United States Geological Survey. March 7, 1981. Retrieved June 25, 2021.
32. "M 5.6 - 16 km E of Paramythiá, Greece". United States Geological Survey. March 10, 1981. Retrieved June 25, 2021.
33. "M 5.6 - 16 km E of Paramythiá, Greece". United States Geological Survey. March 10, 1981. Retrieved June 25, 2021.
34. "Significant Earthquake: GREECE: PREVEZA". National Geophysical Data Center. March 10, 1981. Retrieved June 25, 2021.
35. "M 6.2 - 27 km WSW of San Antonio, Chile". United States Geological Survey. March 23, 1981. Retrieved June 25, 2021.
36. "M 6.2 - 27 km WSW of San Antonio, Chile". United States Geological Survey. March 23, 1981. Retrieved June 25, 2021.
37. "M 5.3 - 4 km WSW of Ticllas, Peru". United States Geological Survey. April 18, 1981. Retrieved June 25, 2021.
38. "M 5.3 - 4 km WSW of Ticllas, Peru". United States Geological Survey. April 18, 1981. Retrieved June 25, 2021.
39. "M 6.9 - 132 km WNW of Sola, Vanuatu". United States Geological Survey. April 24, 1981. Retrieved June 25, 2021.
40. "M 6.9 - 132 km WNW of Sola, Vanuatu". United States Geological Survey. April 24, 1981. Retrieved June 25, 2021.
41. "M 5.8 - 6km N of Westmorland, CA". United States Geological Survey. April 26, 1981. Retrieved June 25, 2021.
42. "M 5.8 - 6km N of Westmorland, CA". United States Geological Survey. April 26, 1981. Retrieved June 25, 2021.
43. "Significant Earthquake: CALIFORNIA: WESTMORLAND,CALIPATRIA". National Geophysical Data Center. April 26, 1981. Retrieved June 25, 2021.
44. "M 6.3 - 54 km SW of Ashk?sham, Afghanistan". United States Geological Survey. May 2, 1981. Retrieved June 26, 2021.
45. "M 6.3 - 54 km SW of Ashk?sham, Afghanistan". United States Geological Survey. May 2, 1981. Retrieved June 26, 2021.
46. "M 6.4 - 37 km NNE of Salinas, Ecuador". United States Geological Survey. May 6, 1981. Retrieved June 26, 2021.
47. "M 6.4 - 37 km NNE of Salinas, Ecuador". United States Geological Survey. May 6, 1981. Retrieved June 26, 2021.
48. "M 7.6 - off the west coast of the South Island of New Zealand". United States Geological Survey. May 25, 1981. Retrieved June 26, 2021.
49. "M 7.6 - off the west coast of the South Island of New Zealand". United States Geological Survey. May 25, 1981. Retrieved June 26, 2021.
50. "M 5.0 - 1 km W of Monastiráki, Greece". United States Geological Survey. May 27, 1981. Retrieved June 26, 2021.
51. "M 5.0 - 1 km W of Monastiráki, Greece". United States Geological Survey. May 27, 1981. Retrieved June 26, 2021.
52. "M 6.0 - 141 km E of Kimbe, Papua New Guinea". United States Geological Survey. May 28, 1981. Retrieved June 26, 2021.
53. "M 6.0 - 141 km E of Kimbe, Papua New Guinea". United States Geological Survey. May 28, 1981. Retrieved June 26, 2021.
54. "M 6.0 - 31 km SE of Hihifo, Tonga". United States Geological Survey. June 1, 1981. Retrieved June 26, 2021.
55. "M 4.9 - 4 km SSW of Petrosino, Italy". United States Geological Survey. June 7, 1981. Retrieved June 26, 2021.
56. "M 4.9 - 4 km SSW of Petrosino, Italy". United States Geological Survey. June 7, 1981. Retrieved June 26, 2021.
57. "M 6.0 - Southern Qinghai, China". United States Geological Survey. June 9, 1981. Retrieved June 26, 2021.
58. "M 6.0 - Southern Qinghai, China". United States Geological Survey. June 9, 1981. Retrieved June 26, 2021.
59. "M 6.7 - 73 km SE of Kerman, Iran". United States Geological Survey. June 11, 1981. Retrieved June 26, 2021.
60. "M 6.7 - 73 km SE of Kerman, Iran". United States Geological Survey. June 11, 1981. Retrieved June 26, 2021.
61. "Significant Earthquake: IRAN: SE: GOLBAFT". National Geophysical Data Center. June 11, 1981. Retrieved June 26, 2021.
62. "M 5.5 - 19 km WSW of A?bak, Afghanistan". United States Geological Survey. June 13, 1981. Retrieved June 26, 2021.
63. "M 5.5 - 19 km WSW of A?bak, Afghanistan". United States Geological Survey. June 13, 1981. Retrieved June 26, 2021.
64. "M 5.2 - 15 km SW of Antaparco, Peru". United States Geological Survey. June 22, 1981. Retrieved June 26, 2021.
65. "M 5.2 - 15 km SW of Antaparco, Peru". United States Geological Survey. June 22, 1981. Retrieved June 26, 2021.
66. "Significant Earthquake: PERU: CENTRAL". National Geophysical Data Center. June 22, 1981. Retrieved June 26, 2021.
67. "M 7.0 - southeast of the Loyalty Islands". United States Geological Survey. July 6, 1981. Retrieved June 26, 2021.
68. "M 7.0 - 92 km NW of Port-Vila, Vanuatu". United States Geological Survey. July 15, 1981. Retrieved June 26, 2021.
69. "M 7.0 - 92 km NW of Port-Vila, Vanuatu". United States Geological Survey. July 15, 1981. Retrieved June 26, 2021.
70. "M 5.6 - 16 km NE of Oshnav?yeh, Iran". United States Geological Survey. July 23, 1981. Retrieved June 26, 2021.
71. "M 5.6 - 16 km NE of Oshnav?yeh, Iran". United States Geological Survey. July 23, 1981. Retrieved June 26, 2021.
72. "M 7.1 - 75 km ESE of Kerman, Iran". United States Geological Survey. July 28, 1981. Retrieved June 26, 2021.
73. "M 7.1 - 75 km ESE of Kerman, Iran". United States Geological Survey. July 28, 1981. Retrieved June 26, 2021.
74. "Significant Earthquake: IRAN: SE, KERMAN". National Geophysical Data Center. July 28, 1981. Retrieved June 26, 2021.
75. "M 5.5 - Bosnia and Herzegovina". United States Geological Survey. August 13, 1981. Retrieved June 26, 2021.
76. "M 5.5 - Bosnia and Herzegovina". United States Geological Survey. August 13, 1981. Retrieved June 26, 2021.
77. "Significant Earthquake: BALKANS NW: BOSNIA-HERZEGOVINA: BANJA LUKA". National Geophysical Data Center. August 13, 1981. Retrieved June 26, 2021.
78. "M 7.7 - 133 km NE of Hihifo, Tonga". United States Geological Survey. September 1, 1981. Retrieved June 26, 2021.
79. "M 7.7 - 133 km NE of Hihifo, Tonga". United States Geological Survey. September 1, 1981. Retrieved June 26, 2021.
80. "Tsunami Event: SAMOA ISLANDS". National Geophysical Data Center. September 1, 1981. Retrieved June 26, 2021.
81. "M 6.6 - 31 km SE of Shikotan, Russia". United States Geological Survey. September 3, 1981. Retrieved June 26, 2021.
82. "M 6.6 - 31 km SE of Shikotan, Russia". United States Geological Survey. September 3, 1981. Retrieved June 26, 2021.
83. "M 6.0 - 1 km ENE of Clarin, Philippines". United States Geological Survey. September 4, 1981. Retrieved June 26, 2021.
84. "M 6.0 - 1 km ENE of Clarin, Philippines". United States Geological Survey. September 4, 1981. Retrieved June 26, 2021.
85. "M 6.2 - 69 km WSW of Gilgit, Pakistan". United States Geological Survey. September 12, 1981. Retrieved June 26, 2021.
86. "M 6.2 - 69 km WSW of Gilgit, Pakistan". United States Geological Survey. September 12, 1981. Retrieved June 26, 2021.
87. "Significant Earthquake: PAKISTAN: GILGIT". National Geophysical Data Center. September 12, 1981. Retrieved June 26, 2021.
88. "M 6.0 Nuclear Explosion - 100 km SSE of Kurchatov, Kazakhstan". United States Geological Survey. September 13, 1981. Retrieved June 26, 2021.
89. "M 6.6 - 291 km ESE of Tadine, New Caledonia". United States Geological Survey. September 17, 1981. Retrieved June 26, 2021.
90. "M 6.3 - 81 km NNE of Madang, Papua New Guinea". United States Geological Survey. October 4, 1981. Retrieved June 27, 2021.
91. "M 6.3 - 81 km NNE of Madang, Papua New Guinea". United States Geological Survey. October 4, 1981. Retrieved June 27, 2021.
92. "M 6.4 - 54 km NNE of Kirakira, Solomon Islands". United States Geological Survey. October 9, 1981. Retrieved June 27, 2021.
93. "M 6.4 - 54 km NNE of Kirakira, Solomon Islands". United States Geological Survey. October 9, 1981. Retrieved June 27, 2021.
94. "M 6.0 - 71 km NNE of Miyako, Japan". United States Geological Survey. October 15, 1981. Retrieved June 27, 2021.
95. "M 6.0 - 71 km NNE of Miyako, Japan". United States Geological Survey. October 15, 1981. Retrieved June 27, 2021.
96. "M 7.2 - 135 km W of Valparaíso, Chile". United States Geological Survey. October 16, 1981. Retrieved June 27, 2021.
97. "M 7.2 - 135 km W of Valparaíso, Chile". United States Geological Survey. October 16, 1981. Retrieved June 27, 2021.
98. "Significant Earthquake: CHILE: OFF CENTRAL COAST, LAS CRUCES". National Geophysical Data Center. October 16, 1981. Retrieved June 27, 2021.
99. "M 6.0 Nuclear Explosion - 100 km SSE of Kurchatov, Kazakhstan". United States Geological Survey. October 18, 1981. Retrieved June 27, 2021.
100. "M 5.4 - 12 km SW of La Esperanza, Colombia". United States Geological Survey. October 18, 1981. Retrieved June 27, 2021.
101. "M 5.4 - 12 km SW of La Esperanza, Colombia". United States Geological Survey. October 18, 1981. Retrieved June 27, 2021.
102. "Significant Earthquake: VENEZUELA-N COLOMBIA". National Geophysical Data Center. October 18, 1981. Retrieved June 27, 2021.
103. "M 7.3 - 7 km NNE of Petacalco, Mexico". United States Geological Survey. October 25, 1981. Retrieved June 27, 2021.
104. "M 7.3 - 7 km NNE of Petacalco, Mexico". United States Geological Survey. October 25, 1981. Retrieved June 27, 2021.
105. "Significant Earthquake: MEXICO: MICHOACAN: LAZARO CARDENAS". National Geophysical Data Center. October 25, 1981. Retrieved June 27, 2021.
106. "M 6.3 - 26 km SSE of Pangai, Tonga". United States Geological Survey. November 4, 1981. Retrieved June 27, 2021.
107. "M 6.3 - 26 km SSE of Pangai, Tonga". United States Geological Survey. November 4, 1981. Retrieved June 27, 2021.
108. "M 6.9 - 17 km E of Wewak, Papua New Guinea". United States Geological Survey. November 6, 1981. Retrieved June 27, 2021.
109. "M 6.9 - 17 km E of Wewak, Papua New Guinea". United States Geological Survey. November 6, 1981. Retrieved June 27, 2021.
110. "M 6.8 - 29 km NNW of La Ligua, Chile". United States Geological Survey. November 7, 1981. Retrieved June 27, 2021.
111. "M 6.8 - 29 km NNW of La Ligua, Chile". United States Geological Survey. November 7, 1981. Retrieved June 27, 2021.
112. "M 5.5 - 32 km WSW of Nangong, China". United States Geological Survey. November 8, 1981. Retrieved June 27, 2021.
113. "M 5.5 - 32 km WSW of Nangong, China". United States Geological Survey. November 8, 1981. Retrieved June 27, 2021.
114. "M 5.3 - 53 km SW of Aswan, Egypt". United States Geological Survey. November 14, 1981. Retrieved June 27, 2021.
115. "M 5.3 - 53 km SW of Aswan, Egypt". United States Geological Survey. November 14, 1981. Retrieved June 27, 2021.
116. "Significant Earthquake: EGYPT: ASWAN". National Geophysical Data Center. November 14, 1981. Retrieved June 27, 2021.
117. "M 6.5 - 21 km NNE of Pagudpud, Philippines". United States Geological Survey. November 22, 1981. Retrieved June 27, 2021.
118. "M 6.5 - 21 km NNE of Pagudpud, Philippines". United States Geological Survey. November 22, 1981. Retrieved June 27, 2021.
119. "M 6.7 - southeast of the Loyalty Islands". United States Geological Survey. November 24, 1981. Retrieved June 27, 2021.
120. "M 4.6 - 12 km ENE of Mastung, Pakistan". United States Geological Survey. December 12, 1981. Retrieved June 27, 2021.
121. "M 4.6 - 12 km ENE of Mastung, Pakistan". United States Geological Survey. December 12, 1981. Retrieved June 27, 2021.
122. "Significant Earthquake: PAKISTAN: CENTRAL". National Geophysical Data Center. December 12, 1981. Retrieved June 27, 2021.
123. "M 7.2 - 61 km W of Eresós, Greece". United States Geological Survey. December 19, 1981. Retrieved June 27, 2021.
124. "M 7.2 - 61 km W of Eresós, Greece". United States Geological Survey. December 19, 1981. Retrieved June 27, 2021.
125. "Significant Earthquake: GREECE: AEGEAN SEA: LESBOS, SKIROS". National Geophysical Data Center. December 19, 1981. Retrieved June 27, 2021.
126. "M 6.8 - Kermadec Islands, New Zealand". United States Geological Survey. December 24, 1981. Retrieved June 27, 2021.
127. "M 7.1 - Kermadec Islands, New Zealand". United States Geological Survey. December 24, 1981. Retrieved June 27, 2021.
128. "M 6.2 Nuclear Explosion - 97 km SSE of Kurchatov, Kazakhstan". United States Geological Survey. December 27, 1981. Retrieved June 27, 2021.
129. "M 6.5 - 29 km E of Skýros, Greece". United States Geological Survey. December 27, 1981. Retrieved June 27, 2021.
130. "M 6.5 - 29 km E of Skýros, Greece". United States Geological Survey. December 27, 1981. Retrieved June 27, 2021.