Earthquakes in 1977
List of earthquakes in 1977 is located in Earth
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
List of earthquakes in 1977
Approximate epicenters of the earthquakes in 1977
Strongest magnitude Indonesia, south of Sumbawa (Magnitude 8.3) August 19
Deadliest Romania, Vrancea County (Magnitude 7.5) March 4 1,641 deaths
Total fatalities3,107
Number by magnitude
9.0+0
8.0–8.91
7.0–7.910
6.0–6.975
5.0–5.91,693
4.0–4.92,395
← 1976
1978 →

This is a list of earthquakes in 1977. Only earthquakes of magnitude 6 or above are 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 Mercalli intensity scale and are sourced from United States Geological Survey (USGS) ShakeMap data. Not a particularly busy year as far as the number of magnitude 7.0+ events with 11 being recorded. The largest event struck Indonesia in August and measured magnitude 8.3. The Solomon Islands were affected by a series of magnitude 7.5 events in April. Several events caused significant numbers of fatalities especially in Iran which had 3 earthquakes throughout the year with a combined death toll of around 1,120 people. The deadliest earthquake occurred in Romania in March and was the worst in the country's history. 1,641 people were killed in this event.

By death toll

Rank Death toll Magnitude Location MMI Depth (km) Date
1 1,641 7.5  Romania, Vrancea County VIII (Severe) 94.0 March 4
2 584 5.8  Iran, Kerman Province VIII (Severe) 31.0 December 19
3 366 5.9  Iran, Chaharmahal and Bakhtiari Province IX (Violent) 41.0 April 6
4 189 8.3  Indonesia, south of Sumbawa VI (Strong) 25.0 August 19
5 167 6.9  Iran, Hormozgan Province IX (Violent) 29.0 March 21
6 70 7.4  Argentina, San Juan Province, Argentina X (Extreme) 13.0 November 23
7 34 6.7  British Solomon Islands, Guadalcanal VII (Very strong) 33.0 April 20
8 30 5.2  Turkey, Elazığ Province V (Moderate) 21.0 March 25
9 18 7.5  British Solomon Islands, Guadalcanal VII (Very strong) 33.0 April 21

Listed are earthquakes with at least 10 dead.

By magnitude

Rank Magnitude Death toll Location MMI Depth (km) Date
1 8.3 189  Indonesia, south of Sumbawa VI (Strong) 25.0 August 19
2 7.6 0  Western Samoa VI (Strong) 33.0 April 2
= 3 7.5 1,641  Romania, Vrancea County VIII (Severe) 94.0 March 4
= 3 7.5 0  British Solomon Islands, Guadalcanal VII (Very strong) 19.0 April 20
= 3 7.5 0  British Solomon Islands, Guadalcanal VII (Very strong) 33.0 April 20
= 3 7.5 18  British Solomon Islands, Guadalcanal VII (Very strong) 33.0 April 21
4 7.4 70  Argentina, San Juan Province, Argentina X (Extreme) 13.0 November 23
= 5 7.2 0  British Solomon Islands VI (Strong) 33.0 July 29
= 5 7.2 0  Tonga, south of III (Weak) 33.0 October 10
6 7.1 0  Falkland Islands Dependencies, east of South Georgia and the South Sandwich Islands ( ) 33.0 August 26
7 7.0 1  Philippines, Luzon VIII (Severe) 37.0 March 18

Listed are earthquakes with at least 7.0 magnitude.

By month

January

January
Strongest magnitude6.6 Mw  Papua New Guinea
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.97
5.0–5.9131
4.0–4.9184
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[1][2] China, Qinghai Province6.327.0VII
2[3][4] Indonesia, south of Sumbawa6.319.0V
6[5][6] Papua New Guinea, off the north coast of East Sepik Province6.633.0VII
17[7][8] Chile, Antofagasta Region6.333.0VI
18[9][10] New Zealand, Cook Strait6.050.0VI
26[11][12][13] Indonesia, Bali5.233.0VI Some damage was caused.
31[14][15][16] Soviet Union, Batken Region, Kyrgyzstan6.120.0VII Some damage was caused.

February

February
Strongest magnitude6.7 Mw  United States
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.97
5.0–5.996
4.0–4.9152
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[17] Argentina, Salta Province6.0549.0
19[18] United States, Near Islands, Alaska6.733.0

March

March
Strongest magnitude7.5 Mw  Romania
Deadliest7.5 Mw  Romania
1,641 deaths
Total fatalities1,839
Number by magnitude
8.0–8.90
7.0–7.92
6.0–6.97
5.0–5.9132
4.0–4.9229
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

2[19][20] Philippines, Moro Gulf, Mindanao6.152.0VI
4[21][22][23] Romania, Vrancea County7.594.0VIII Deadliest event of 1977. The 1977 Vrancea earthquake caused major destruction despite being fairly deep. 1,641 people were killed and 10,500 were injured. This was the deadliest earthquake in Romanian history. Bucharest suffered major property damage with costs reaching $2 billion (1977 rate).1,64110,500
8[24][25][26] Indonesia, northern Sumatra6.022.0VIII Some damage was caused.
18[27][28][29] Philippines, Luzon7.037.0VIII 1 person was killed and another 9 were injured. 14 homes were destroyed and 22 more were damaged. Costs were $100,000 (1977 rate).19
21[30][31][32] Iran, Hormozgan Province6.929.0VIII During the 1977 Khurgu earthquake, 167 people were killed and another 556 were injured. Major damage was reported.167556
23[33][34] Fiji6.333.0VI
23[35] Fiji6.02.0 Aftershock of previous event.
25[36][37][38] Turkey, Elazığ Province5.221.0V 30 people were killed and major damage was caused.30
26[39][40] United States, Fox Islands (Alaska)6.038.0IV

April

April
Strongest magnitude7.6 Mw  Western Samoa
Deadliest5.9 Mw  Iran
366 deaths
Total fatalities418
Number by magnitude
8.0–8.90
7.0–7.94
6.0–6.97
5.0–5.9156
4.0–4.9234
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[41][42] Iran, Hormozgan Province6.229.0VII Aftershock of March 21 event.
2[43][44][45] Western Samoa7.633.0VI Some damage was reported.
6[46][47][48] Iran, Chaharmahal and Bakhtiari Province5.941.0IX The 1977 Naghan earthquake killed at least 366 people and left a further 200 injured. Some damage was caused.366200
20[49][50][51] United Kingdom, Guadalcanal, Solomon Islands6.733.0VII Beginning of a series of large and destructive earthquakes in a period of several hours. 12 people died and a further 22 were missing in the first event. Major damage was caused. A mild tsunami was observed.34
20[52][53][54]  United Kingdom, Guadalcanal, Solomon Islands 7.5 19.0 IX[55] Some damage was caused.
20[56][57][58] United Kingdom, Guadalcanal, Solomon Islands7.533.0VIII Suspected injuries and damage were reported.1+
21[59][60] United Kingdom, Guadalcanal, Solomon Islands6.133.0VI
21[61][62][63] United Kingdom, Guadalcanal, Solomon Islands7.533.0VII Final of the mainshocks in the series. A further 18 people were killed and 1 person was injured. Major damage was caused.181
21[64][65] United Kingdom, Solomon Islands6.033.0V Aftershock.
22[66][67] United Kingdom, Solomon Islands6.051.0V Aftershock.

May

May
Strongest magnitude6.0 Mw  United States
Deadliest5.4 Mw  Iran
3 deaths
Total fatalities3
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.91
5.0–5.9128
4.0–4.9211
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

26[68][69][70] Iran, West Azarbaijan Province5.437.0V 3 people were killed and 9 were injured. Heavy damage was reported.39
30[71][72] United States, Fox Islands (Alaska)6.033.0IV

June

June
Strongest magnitude6.8 Mw  Tonga
Deadliest6.8 Mw  Tonga
1 death
Total fatalities1
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.94
5.0–5.9115
4.0–4.9224
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

22[73][74][75] Tonga6.865.0VII 1 person was killed and 5 were injured in the 1977 Tonga earthquake. $1.2 million (1977 rate) of property damage was caused.15

July

July
Strongest magnitude7.2 Mw  United Kingdom, Solomon Islands
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.95
5.0–5.9116
4.0–4.9184
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

16[76][77] Yugoslavia, Upper Carniola, Slovenia4.66.0VI Some damage was caused.
21[78][79] Philippines, Luzon6.933.0VII
29[80][81] United Kingdom, Solomon Islands7.233.0VI

August

August
Strongest magnitude8.3 Mw  Indonesia
Deadliest8.3 Mw  Indonesia
189 deaths
Total fatalities192
Number by magnitude
8.0–8.91
7.0–7.91
6.0–6.911
5.0–5.9180
4.0–4.9212
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

19[82] Indonesia, south of Sumbawa6.133.0 Foreshock of 1977 Sumba earthquake.
19[83][84][85][86] Indonesia, south of Sumbawa8.325.0VI Largest event of 1977. The 1977 Sumba earthquake caused some damage. A large tsunami led to 189 deaths and 75 injuries. Damage costs of $1.2 million (1977 rate). Many aftershocks followed.18975
26[87] United Kingdom, east of South Georgia and the South Sandwich Islands7.133.0
27[88][89] Indonesia, north of Timor6.825.0VII
29[90][91] Philippines, west of Luzon6.212.0V
31[92][93][94] Colombia, Antioquia Department6.433.0VII 3 people were killed and some damage was caused.3

September

September
Strongest magnitude6.6 Mw  United States
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.99
5.0–5.9141
4.0–4.9192
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[95][96] New Hebrides, Vanuatu6.533.0VI
4[97][98] United States, Rat Islands, Alaska6.434.0II First of a series of large events in the area.
4[99][100] United States, Rat Islands, Alaska6.431.0II
4[101][102] United States, Rat Islands, Alaska6.68.0II
12[103] Greece, southwest of Crete6.033.0
13[104] Tonga6.033.0

October

October
Strongest magnitude7.2 Mw  Tonga
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.94
5.0–5.9184
4.0–4.9208
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

10[105][106] Tonga, south of7.233.0III
22[107] Argentina, Santiago del Estero Province6.1614.0

November

November
Strongest magnitude7.4 Mw  Argentina
Deadliest7.4 Mw  Argentina
70 deaths
Total fatalities70
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.97
5.0–5.9160
4.0–4.9186
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

3[108][109][110] Bulgaria, Pazardzhik Province5.26.0VII Some damage was caused.
4[111][112] United States, Andreanof Islands, Alaska6.733.0VI
9[113][114][115] Iran, Semnan Province4.933.0IV Some damage was caused.
18[116][117] China, western Xizang Province6.533.0VIII
23[118][119][120] Argentina, San Juan Province, Argentina7.413.0X 70 people were killed and 300 were injured in the 1977 San Juan earthquake. Extensive property damage was caused with costs of $80 million (1977 rate).70300
23[121][122] Argentina, La Rioja Province6.033.0VI Aftershock.
24[123][124] Argentina, San Juan Province, Argentina6.033.0VII Aftershock.
24[125][126] Argentina, San Juan Province, Argentina6.323.0VII Aftershock.

December

December
Strongest magnitude6.8 Mw  Japan
Deadliest5.8 Mw  Iran
584 deaths
Total fatalities584
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.96
5.0–5.9154
4.0–4.9179
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

19[127][128][129] Iran, Kerman Province5.831.0VIII During the 1977 Bob–Tangol earthquake, 584 people were killed and 1,000 were injured. Major damage was caused.5841,000
28[130][131]Red Sea6.633.0VIII

References

  1. ↑ "M 6.3 - Xinjiang-Qinghai border region, China". United States Geological Survey. January 1, 1977. Retrieved June 6, 2021.
  2. ↑ "M 6.3 - Xinjiang-Qinghai border region, China". United States Geological Survey. January 1, 1977. Retrieved June 6, 2021.
  3. ↑ "M 6.3 - south of Sumbawa, Indonesia". United States Geological Survey. January 2, 1977. Retrieved June 6, 2021.
  4. ↑ "M 6.3 - south of Sumbawa, Indonesia". United States Geological Survey. January 2, 1977. Retrieved June 6, 2021.
  5. ↑ "M 6.6 - near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. January 6, 1977. Retrieved June 6, 2021.
  6. ↑ "M 6.6 - near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. January 6, 1977. Retrieved June 6, 2021.
  7. ↑ "M 6.3 - Antofagasta, Chile". United States Geological Survey. January 17, 1977. Retrieved June 6, 2021.
  8. ↑ "M 6.3 - Antofagasta, Chile". United States Geological Survey. January 17, 1977. Retrieved June 6, 2021.
  9. ↑ "M 6.0 - Cook Strait, New Zealand". United States Geological Survey. January 18, 1977. Retrieved June 6, 2021.
  10. ↑ "M 6.0 - Cook Strait, New Zealand". United States Geological Survey. January 18, 1977. Retrieved June 6, 2021.
  11. ↑ "M 5.2 - Bali region, Indonesia". United States Geological Survey. January 26, 1977. Retrieved June 6, 2021.
  12. ↑ "M 5.2 - Bali region, Indonesia". United States Geological Survey. January 26, 1977. Retrieved June 6, 2021.
  13. ↑ "Significant Earthquake: INDONESIA: BALI: KAYUBIHI,BANJAR ANTUGAN JEHEM". National Geophysical Data Center. January 26, 1977. Retrieved June 6, 2021.
  14. ↑ "M 6.1 - Kyrgyzstan". United States Geological Survey. January 31, 1977. Retrieved June 6, 2021.
  15. ↑ "M 6.1 - Kyrgyzstan". United States Geological Survey. January 31, 1977. Retrieved June 6, 2021.
  16. ↑ "Significant Earthquake: TAJIKISTAN". National Geophysical Data Center. January 31, 1977. Retrieved June 6, 2021.
  17. ↑ "M 6.0 - Salta, Argentina". United States Geological Survey. February 4, 1977. Retrieved June 6, 2021.
  18. ↑ "M 6.7 - Near Islands, Aleutian Islands, Alaska". United States Geological Survey. February 19, 1977. Retrieved June 6, 2021.
  19. ↑ "M 6.1 - Moro Gulf, Mindanao, Philippines". United States Geological Survey. March 2, 1977. Retrieved June 6, 2021.
  20. ↑ "M 6.1 - Moro Gulf, Mindanao, Philippines". United States Geological Survey. March 2, 1977. Retrieved June 6, 2021.
  21. ↑ "M 7.5 - Romania". United States Geological Survey. March 4, 1977. Retrieved June 6, 2021.
  22. ↑ "M 7.5 - Romania". United States Geological Survey. March 4, 1977. Retrieved June 6, 2021.
  23. ↑ "Significant Earthquake: ROMANIA: BUCHAREST". National Geophysical Data Center. March 4, 1977. Retrieved June 6, 2021.
  24. ↑ "M 6.0 - northern Sumatra, Indonesia". United States Geological Survey. March 8, 1977. Retrieved June 6, 2021.
  25. ↑ "M 6.0 - northern Sumatra, Indonesia". United States Geological Survey. March 8, 1977. Retrieved June 6, 2021.
  26. ↑ "Significant Earthquake: INDONESIA: SUMATERA,SINURAT,TALU". National Geophysical Data Center. March 8, 1977. Retrieved June 6, 2021.
  27. ↑ "M 7.0 - Luzon, Philippines". United States Geological Survey. March 18, 1977. Retrieved June 6, 2021.
  28. ↑ "M 7.0 - Luzon, Philippines". United States Geological Survey. March 18, 1977. Retrieved June 6, 2021.
  29. ↑ "Significant Earthquake: PHILIPPINES: LUZON: MANILA". National Geophysical Data Center. March 18, 1977. Retrieved June 6, 2021.
  30. ↑ "M 6.9 - southern Iran". United States Geological Survey. March 21, 1977. Retrieved June 6, 2021.
  31. ↑ "M 6.9 - southern Iran". United States Geological Survey. March 21, 1977. Retrieved June 6, 2021.
  32. ↑ "Significant Earthquake: IRAN: BANDAR ABBAS". National Geophysical Data Center. March 21, 1977. Retrieved June 6, 2021.
  33. ↑ "M 6.3 - Fiji region". United States Geological Survey. March 23, 1977. Retrieved June 6, 2021.
  34. ↑ "M 6.3 - Fiji region". United States Geological Survey. March 23, 1977. Retrieved June 6, 2021.
  35. ↑ "M 6.3 - Fiji region". United States Geological Survey. March 23, 1977. Retrieved June 6, 2021.
  36. ↑ "M 5.2 - eastern Turkey". United States Geological Survey. March 25, 1977. Retrieved June 7, 2021.
  37. ↑ "M 5.2 - eastern Turkey". United States Geological Survey. March 25, 1977. Retrieved June 7, 2021.
  38. ↑ "Significant Earthquake: TURKEY". National Geophysical Data Center. March 25, 1977. Retrieved June 7, 2021.
  39. ↑ "M 6.0 - Fox Islands, Aleutian Islands, Alaska". United States Geological Survey. March 26, 1977. Retrieved June 7, 2021.
  40. ↑ "M 6.0 - Fox Islands, Aleutian Islands, Alaska". United States Geological Survey. March 26, 1977. Retrieved June 7, 2021.
  41. ↑ "M 6.2 - southern Iran". United States Geological Survey. April 1, 1977. Retrieved June 8, 2021.
  42. ↑ "M 6.2 - southern Iran". United States Geological Survey. April 1, 1977. Retrieved June 8, 2021.
  43. ↑ "M 7.6 - Samoa Islands region". United States Geological Survey. April 2, 1977. Retrieved June 8, 2021.
  44. ↑ "M 7.6 - Samoa Islands region". United States Geological Survey. April 2, 1977. Retrieved June 8, 2021.
  45. ↑ "Significant Earthquake: SAMOA ISLANDS: APIA". National Geophysical Data Center. April 2, 1977. Retrieved June 8, 2021.
  46. ↑ "M 5.9 - western Iran". United States Geological Survey. April 6, 1977. Retrieved June 8, 2021.
  47. ↑ "M 5.9 - western Iran". United States Geological Survey. April 6, 1977. Retrieved June 8, 2021.
  48. ↑ "Significant Earthquake: IRAN: NAGHAN,ARDAL,JAGHDAN,DASTGERD,KORDAN,SARMUR". National Geophysical Data Center. April 6, 1977. Retrieved June 8, 2021.
  49. ↑ "M 6.7 - Solomon Islands". United States Geological Survey. April 20, 1977. Retrieved June 8, 2021.
  50. ↑ "M 6.7 - Solomon Islands". United States Geological Survey. April 20, 1977. Retrieved June 8, 2021.
  51. ↑ "Significant Earthquake: SOLOMON ISLANDS". National Geophysical Data Center. April 20, 1977. Retrieved June 8, 2021.
  52. ↑ "M 7.5 - Solomon Islands". United States Geological Survey. April 20, 1977. Retrieved June 8, 2021.
  53. ↑ "M 7.5 - Solomon Islands". United States Geological Survey. April 20, 1977. Retrieved June 8, 2021.
  54. ↑ "Significant Earthquake: SOLOMON ISLANDS". National Geophysical Data Center. April 20, 1977. Retrieved June 8, 2021.
  55. ↑ USGS (27 March 2023). "PAGER" (PDF). Retrieved 3 April 2023.
  56. ↑ "M 7.5 - Solomon Islands". United States Geological Survey. April 20, 1977. Retrieved June 8, 2021.
  57. ↑ "M 7.5 - Solomon Islands". United States Geological Survey. April 20, 1977. Retrieved June 8, 2021.
  58. ↑ "Significant Earthquake: SOLOMON ISLANDS". National Geophysical Data Center. April 20, 1977. Retrieved June 8, 2021.
  59. ↑ "M 6.1 - Solomon Islands". United States Geological Survey. April 21, 1977. Retrieved June 8, 2021.
  60. ↑ "M 6.1 - Solomon Islands". United States Geological Survey. April 21, 1977. Retrieved June 8, 2021.
  61. ↑ "M 7.5 - Solomon Islands". United States Geological Survey. April 21, 1977. Retrieved June 8, 2021.
  62. ↑ "M 7.5 - Solomon Islands". United States Geological Survey. April 21, 1977. Retrieved June 8, 2021.
  63. ↑ "Significant Earthquake: SOLOMON ISLANDS". National Geophysical Data Center. April 21, 1977. Retrieved June 8, 2021.
  64. ↑ "M 6.0 - Solomon Islands". United States Geological Survey. April 21, 1977. Retrieved June 8, 2021.
  65. ↑ "M 6.0 - Solomon Islands". United States Geological Survey. April 21, 1977. Retrieved June 8, 2021.
  66. ↑ "M 6.0 - Solomon Islands". United States Geological Survey. April 22, 1977. Retrieved June 8, 2021.
  67. ↑ "M 6.0 - Solomon Islands". United States Geological Survey. April 22, 1977. Retrieved June 8, 2021.
  68. ↑ "M 5.4 - Turkey-Iran border region". United States Geological Survey. May 26, 1977. Retrieved June 9, 2021.
  69. ↑ "M 5.4 - Turkey-Iran border region". United States Geological Survey. May 26, 1977. Retrieved June 9, 2021.
  70. ↑ "Significant Earthquake: IRAN: AZARBAIJAN". National Geophysical Data Center. May 26, 1977. Retrieved June 9, 2021.
  71. ↑ "M 6.0 - Fox Islands, Aleutian Islands, Alaska". United States Geological Survey. May 30, 1977. Retrieved June 9, 2021.
  72. ↑ "M 6.0 - Fox Islands, Aleutian Islands, Alaska". United States Geological Survey. May 30, 1977. Retrieved June 9, 2021.
  73. ↑ "M 6.8 - Tonga region". United States Geological Survey. June 22, 1977. Retrieved June 9, 2021.
  74. ↑ "M 6.8 - Tonga region". United States Geological Survey. June 22, 1977. Retrieved June 9, 2021.
  75. ↑ "Significant Earthquake: TONGA TRENCH". National Geophysical Data Center. June 22, 1977. Retrieved June 9, 2021.
  76. ↑ "M 4.6 - Slovenia". United States Geological Survey. July 16, 1977. Retrieved June 10, 2021.
  77. ↑ "Significant Earthquake: BALKANS NW: SLOVENIA: TRSTENIK,BELA,TENETISE". National Geophysical Data Center. July 16, 1977. Retrieved June 10, 2021.
  78. ↑ "M 6.9 - Luzon, Philippines". United States Geological Survey. July 21, 1977. Retrieved June 10, 2021.
  79. ↑ "M 6.9 - Luzon, Philippines". United States Geological Survey. July 21, 1977. Retrieved June 10, 2021.
  80. ↑ "M 7.2 - Solomon Islands". United States Geological Survey. July 29, 1977. Retrieved June 10, 2021.
  81. ↑ "M 7.2 - Solomon Islands". United States Geological Survey. July 29, 1977. Retrieved June 10, 2021.
  82. ↑ "M 6.1 - south of Sumbawa, Indonesia". United States Geological Survey. August 19, 1977. Retrieved June 10, 2021.
  83. ↑ "M 8.3 - south of Sumbawa, Indonesia". United States Geological Survey. August 19, 1977. Retrieved June 10, 2021.
  84. ↑ "M 8.3 - south of Sumbawa, Indonesia". United States Geological Survey. August 19, 1977. Retrieved June 10, 2021.
  85. ↑ "Significant Earthquake: INDONESIA: SUNDA ISLANDS". National Geophysical Data Center. August 19, 1977. Retrieved June 10, 2021.
  86. ↑ "Tsunami Event: SUNDA ISLANDS". National Geophysical Data Center. August 19, 1977. Retrieved June 10, 2021.
  87. ↑ "M 7.1 - east of the South Sandwich Islands". United States Geological Survey. August 26, 1977. Retrieved June 10, 2021.
  88. ↑ "M 6.8 - East Timor region". United States Geological Survey. August 27, 1977. Retrieved June 10, 2021.
  89. ↑ "M 6.8 - East Timor region". United States Geological Survey. August 27, 1977. Retrieved June 10, 2021.
  90. ↑ "M 6.2 - Philippine Islands region". United States Geological Survey. August 29, 1977. Retrieved June 10, 2021.
  91. ↑ "M 6.2 - Philippine Islands region". United States Geological Survey. August 29, 1977. Retrieved June 10, 2021.
  92. ↑ "M 6.4 - northern Colombia". United States Geological Survey. August 31, 1977. Retrieved June 10, 2021.
  93. ↑ "M 6.4 - northern Colombia". United States Geological Survey. August 31, 1977. Retrieved June 10, 2021.
  94. ↑ "Significant Earthquake: COLOMBIA: APARTADO, MEDELLIN". National Geophysical Data Center. August 31, 1977. Retrieved June 10, 2021.
  95. ↑ "M 6.5 - Vanuatu". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  96. ↑ "M 6.5 - Vanuatu". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  97. ↑ "M 6.4 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  98. ↑ "M 6.4 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  99. ↑ "M 6.4 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  100. ↑ "M 6.4 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  101. ↑ "M 6.6 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  102. ↑ "M 6.6 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. September 4, 1977. Retrieved June 12, 2021.
  103. ↑ "M 6.0 - Crete, Greece". United States Geological Survey. September 12, 1977. Retrieved June 12, 2021.
  104. ↑ "M 6.0 - Tonga". United States Geological Survey. September 13, 1977. Retrieved June 12, 2021.
  105. ↑ "M 7.2 - south of Tonga". United States Geological Survey. October 10, 1977. Retrieved June 13, 2021.
  106. ↑ "M 7.2 - south of Tonga". United States Geological Survey. October 10, 1977. Retrieved June 13, 2021.
  107. ↑ "M 6.1 - Santiago Del Estero, Argentina". United States Geological Survey. October 22, 1977. Retrieved June 13, 2021.
  108. ↑ "M 5.2 - Bulgaria". United States Geological Survey. November 3, 1977. Retrieved June 13, 2021.
  109. ↑ "M 5.2 - Bulgaria". United States Geological Survey. November 3, 1977. Retrieved June 13, 2021.
  110. ↑ "Significant Earthquake: ROMANIA: VELINGRAD". National Geophysical Data Center. November 3, 1977. Retrieved June 13, 2021.
  111. ↑ "M 6.7 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 4, 1977. Retrieved June 13, 2021.
  112. ↑ "M 6.7 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 4, 1977. Retrieved June 13, 2021.
  113. ↑ "M 4.9 - northern Iran". United States Geological Survey. November 9, 1977. Retrieved June 13, 2021.
  114. ↑ "M 4.9 - northern Iran". United States Geological Survey. November 9, 1977. Retrieved June 13, 2021.
  115. ↑ "Significant Earthquake: IRAN: GORGAN". National Geophysical Data Center. November 9, 1977. Retrieved June 13, 2021.
  116. ↑ "M 6.5 - western Xizang". United States Geological Survey. November 18, 1977. Retrieved June 13, 2021.
  117. ↑ "M 6.5 - western Xizang". United States Geological Survey. November 18, 1977. Retrieved June 13, 2021.
  118. ↑ "M 7.4 - San Juan, Argentina". United States Geological Survey. November 23, 1977. Retrieved June 13, 2021.
  119. ↑ "M 7.4 - San Juan, Argentina". United States Geological Survey. November 23, 1977. Retrieved June 13, 2021.
  120. ↑ "Significant Earthquake: ARGENTINA: SAN JUAN PROVINCE: MENDOZA". National Geophysical Data Center. November 23, 1977. Retrieved June 13, 2021.
  121. ↑ "M 6.0 - La Rioja, Argentina". United States Geological Survey. November 23, 1977. Retrieved June 14, 2021.
  122. ↑ "M 6.0 - La Rioja, Argentina". United States Geological Survey. November 23, 1977. Retrieved June 14, 2021.
  123. ↑ "M 6.0 - San Juan, Argentina". United States Geological Survey. November 24, 1977. Retrieved June 14, 2021.
  124. ↑ "M 6.0 - San Juan, Argentina". United States Geological Survey. November 24, 1977. Retrieved June 14, 2021.
  125. ↑ "M 6.3 - San Juan, Argentina". United States Geological Survey. November 24, 1977. Retrieved June 14, 2021.
  126. ↑ "M 6.3 - San Juan, Argentina". United States Geological Survey. November 24, 1977. Retrieved June 14, 2021.
  127. ↑ "M 5.8 - central Iran". United States Geological Survey. December 19, 1977. Retrieved June 14, 2021.
  128. ↑ "M 5.8 - central Iran". United States Geological Survey. December 19, 1977. Retrieved June 14, 2021.
  129. ↑ "Significant Earthquake: IRAN: BAB-TANGOL". National Geophysical Data Center. December 19, 1977. Retrieved June 14, 2021.
  130. ↑ "M 6.6 - Red Sea". United States Geological Survey. December 28, 1977. Retrieved June 14, 2021.
  131. ↑ "M 6.6 - Red Sea". United States Geological Survey. December 28, 1977. Retrieved June 14, 2021.
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