List of earthquakes in 1973

This is a list of earthquakes in 1973. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. 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. Both the number of large events and the death toll were substantially lower in 1973. There was 9 magnitude 7.0+ events. The largest of these was in Japan measuring 7.7. Russia and Vanuatu were active during the year with each country having 2 magnitude 7.0+ events. Of the 700 deaths during the year Mexico had the vast majority over 2 separate events. One deadly earthquake struck in January and the other in August. The latter contributing 600 deaths to the overall total.

Earthquakes in 1973
Approximate epicenters of the earthquakes in 1973
Strongest magnitude off the east coast of Hokkaido, Japan (Magnitude 7.7) June 17
Deadliest Oaxaca, Mexico (Magnitude 6.8) August 28 600 deaths
Total fatalities700
Number by magnitude
9.0+0
8.0−8.90
7.0−7.99
6.0−6.957
5.0−5.91333
4.0−4.92557
← 1972
1974 →

Overall

By death toll
Rank Death toll Magnitude Location MMI Depth (km) Date
1 600 6.8 Oaxaca, Mexico VIII (Severe) 84.0 August 28
2 56 7.5 Michoacan, Mexico X (Extreme) 43.0 January 30
3 26 6.5 Alajuela Province, Costa Rica VI (Strong) 33.0 April 14
4 15 7.0 Luzon, Philippines VII (Very strong) 33.0 March 17
  • Note: At least 10 casualties

By magnitude
Rank Magnitude Death toll Location MMI Depth (km) Date
1 7.7 0 off the east coast of Hokkaido, Japan VIII (Severe) 48.0 June 17
2 7.5 56 Michoacan, Mexico X (Extreme) 43.0 January 30
2 7.5 0 Vanuatu VIII (Severe) 26.0 December 28
3 7.4 0 Sichuan Province, China VIII (Severe) 33.0 February 6
4 7.2 0 Kuril Islands, Russia VII (Very strong) 27.0 February 28
4 7.2 0 Vanuatu VII (Very strong) 47.0 December 29
5 7.1 0 Kuril Islands, Russia VIII (Severe) 50.0 June 24
6 7.0 15 Luzon, Philippines VII (Very strong) 33.0 March 17
6 7.0 0 east of the South Sandwich Islands ( ) 33.0 October 6
  • Note: At least 7.0 magnitude

Notable events

January
January
Strongest magnitude7.5 Mw , Mexico
Deadliest7.5 Mw , Mexico
56 deaths
Total fatalities56
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.94
5.0−5.9101
4.0−4.9193

February
February
Strongest magnitude7.4 Mw , China
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.92
5.0−5.996
4.0−4.9204

March
March
Strongest magnitude7.0 Mw , Philippines
Deadliest7.0 Mw , Philippines
15 deaths
Total fatalities15
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.94
5.0−5.9105
4.0−4.9208
  • A magnitude 6.1 earthquake struck eastern Kamchatka, Russia on March 4 at a depth of 32.0 km.[19]
  • A magnitude 5.5 earthquake struck New South Wales, Australia on March 9 at a depth of 13.0 km. The shock had a maximum intensity of VII (Very strong).[20] Property damage was around $500,000 (1973 rate).[21]
  • A magnitude 6.1 aftershock struck the Kuril Islands, Russia on March 12 at a depth of 54.0 km.[22]
  • A magnitude 6.0 earthquake struck Vanuatu on March 17 at a depth of 194.0 km.[23]
  • A magnitude 7.0 earthquake struck Luzon, Philippines on March 17 at a depth of 33.0 km. The shock had a maximum intensity of VII (Very strong).[24] 15 people were killed and 64 were injured. Damage costs were around $450,000 (1973 rate).[25]
  • A magnitude 6.5 earthquake struck the Molucca Sea, Indonesia on March 18 at a depth of 33.0 km.[26]

April
April
Strongest magnitude6.6 Mw , India
Deadliest6.5 Mw , Costa Rica
26 deaths
Total fatalities27
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.98
5.0−5.988
4.0−4.9287
  • A magnitude 5.9 earthquake struck the Gulf of Tadjoura, Djibouti on April 1 at a depth of 31.0 km. The shock had a maximum intensity of V (Moderate).[27] Some damage was reported.[28]
  • A magnitude 6.2 earthquake struck Quindio Department, Colombia on April 3 at a depth of 158.0 km.[29]
  • A magnitude 6.6 earthquake struck the Nicobar Islands, India on April 7 at a depth of 33.0 km.[30]
  • A magnitude 6.4 earthquake struck Vanuatu on April 8 at a depth of 35.0 km. The shock had a maximum intensity of VI (Strong).[31]
  • A magnitude 6.1 aftershock struck the Kuril Islands, Russia on April 12 at a depth of 52.0 km.[32]
  • A magnitude 6.5 earthquake struck Alajuela Province, Costa Rica on April 14 at a depth of 33.0 km. The shock had a maximum intensity of VI (Strong).[33] 26 people were killed and 100 were hurt. Property damage costs were $200,000 (1973 rate).[34]
  • A magnitude 6.4 earthquake struck off the south coast of Papua (province), Indonesia on April 17 at a depth of 33.0 km. The shock had a maximum intensity of VI (Strong).[35]
  • A magnitude 6.5 earthquake struck off the west coast of Colombia on April 24 at a depth of 50.0 km. The shock had a maximum intensity of V (Moderate).[36] 1 person died and some damage was reported.[37]
  • A magnitude 6.1 earthquake struck off the north coast of Hawaii (island) on April 26 at a depth of 50.0 km. The shock had a maximum intensity of VII (Very strong).[38] 11 people were injured. Property damage was costed at $5.75 million (1973 rate).[39]

May
May
Strongest magnitude6.0 Mw , United States
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.91
5.0−5.983
4.0−4.9190
  • May 1973 was a very quiet month worldwide. Only 1 earthquake reached magnitude 6.0 and it occurred in the Aleutian Islands, Alaska on May 29.[40] Although in a remote location it technically was the largest event of the month. For the purposes of the attached table for May it has been mentioned.

June
June
Strongest magnitude7.7 Mw , Japan
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.94
5.0−5.9155
4.0−4.9269
  • A magnitude 6.1 earthquake struck Vanuatu on June 5 at a depth of 24.0 km.[41]
  • A magnitude 6.3 earthquake struck Makira, Solomon Islands on June 9 at a depth of 70.0 km.[42]
  • A magnitude 7.7 earthquake struck off the east coast of Hokkaido, Japan on June 17 at a depth of 48.0 km. The shock had a maximum intensity of VIII (Severe).[43] 27 people were injured. 2 homes were destroyed. Damage costs were around $5 million (1973 rate).[44]
  • A magnitude 6.0 aftershock struck off the east coast of Hokkaido, Japan on June 17 at a depth of 50.0 km.[45]
  • A magnitude 7.1 aftershock struck the far southern end of the Kuril Islands, Russia on June 24 at a depth of 50.0 km. The shock had a maximum intensity of VIII (Severe).[46] 1 person was injured. Some damage was caused.[47]
  • A magnitude 6.6 aftershock struck the far southern end of the Kuril Islands, Russia on June 26 at a depth of 50.0 km. The shock had a maximum intensity of VI (Strong).[48]

July
July
Strongest magnitude6.9 Mw , China
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.97
5.0−5.9153
4.0−4.9234
  • A magnitude 6.7 earthquake struck off the southeast coast of Alaska on July 1 at a depth of 33.0 km.[49]
  • A magnitude 6.0 foreshock struck Samar, Philippines on July 3 at a depth of 44.0 km.[50]
  • A magnitude 6.5 earthquake struck Samar, Philippines on July 3 at a depth of 33.0 km. The shock had a maximum intensity of VI (Strong).[51]
  • A magnitude 6.0 earthquake struck north of Samar, Philippines on July 5 at a depth of 38.0 km.[52]
  • A magnitude 6.9 earthquake struck Xizang Province, China on July 14 at a depth of 33.0 km.[53]
  • A magnitude 6.3 earthquake struck off the coast of Atacama Region, Chile on July 31 at a depth of 33.0 km.[54]
  • A magnitude 6.0 earthquake struck the Solomon Islands on July 31 at a depth of 30.0 km. The shock had a maximum intensity of VII (Very strong).[55]

August
August
Strongest magnitude6.8 Mw , Mexico
Deadliest6.8 Mw , Mexico
600 deaths
Total fatalities600
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.910
5.0−5.9104
4.0−4.9189
  • A magnitude 6.1 earthquake struck Vanuatu on August 1 at a depth of 200.0 km.[56]
  • A magnitude 6.1 earthquake struck Tonga on August 5 at a depth of 33.0 km.[57]
  • A magnitude 6.1 foreshock struck off the coast of Atacama Region, Chile on August 7 at a depth of 25.0 km.[58]
  • A magnitude 6.3 earthquake struck off the coast of Atacama Region, Chile on August 7 at a depth of 14.0 km. The shock had a maximum intensity of VII (Very strong).[59]
  • A magnitude 6.0 aftershock struck the far southern Kuril Islands, Russia on August 9 at a depth of 55.0 km.[60]
  • A magnitude 6.1 earthquake struck Sichuan Province, China on August 11 at a depth of 33.0 km. The shock had a maximum intensity of VII (Very strong).[61]
  • A magnitude 6.0 earthquake struck East Sepik Province, Papua New Guinea on August 13 at a depth of 112.0 km.[62]
  • A magnitude 6.4 earthquake struck Yunnan Province, China on August 16 at a depth of 33.0 km. The shock had a maximum intensity of VI (Strong).[63]
  • A magnitude 6.1 earthquake struck west of Panay, Philippines on August 18 at a depth of 14.0 km. The shock had a maximum intensity of V (Moderate).[64]
  • A magnitude 6.8 earthquake struck Oaxaca, Mexico on August 28 at a depth of 84.0 km. The shock had a maximum intensity of VIII (Severe).[65] 600 deaths were caused as well as major damage in the area.[66]

September
September
Strongest magnitude6.5 Mw , North Korea
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.93
5.0−5.996
4.0−4.9173
  • A magnitude 6.0 earthquake struck off the coast of Primorsky Krai, Russia on September 10 at a depth of 532.0 km.[67]
  • A magnitude 6.0 earthquake struck the Bohol Sea, Philippines on September 20 at a depth of 560.0 km.[68]
  • A magnitude 6.5 earthquake struck off the east coast of North Korea on September 29 at a depth of 575.0 km.[69]

October
October
Strongest magnitude7.0 Mw , United Kingdom
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.95
5.0−5.999
4.0−4.9232
  • A magnitude 6.5 foreshock struck off the coast of Valparaiso Region, Chile on October 5 at a depth of 14.0 km. The shock had a maximum intensity of VI (Strong).[70]
  • A magnitude 6.7 earthquake struck Valparaiso Region, Chile on October 5 at a depth of 33.0 km. The shock had a maximum intensity of VI (Strong). This came 2 minutes after the foreshock.[71] Some damage was caused.[72]
  • A magnitude 7.0 earthquake struck east of the South Sandwich Islands on October 6 at a depth of 33.0 km.[73]
  • A magnitude 6.4 earthquake struck Vanuatu on October 9 at a depth of 9.0 km. The shock had a maximum intensity of VI (Strong).[74]
  • A magnitude 6.0 earthquake struck Jalisco, Mexico on October 18 at a depth of 45.0 km.[75]
  • A magnitude 6.1 earthquake struck Tarija Department, Bolivia on October 25 at a depth of 529.0 km.[76]

November
November
Strongest magnitude6.4 Mw , United States
Deadliest2 events caused 1 death each in Iran and Portugal
Total fatalities2
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.96
5.0−5.9128
4.0−4.9188
  • A magnitude 5.8 earthquake struck off the west coast of Greece on November 4 at a depth of 8.0 km. The shock had a maximum intensity of VII (Very strong).[77] Some damage was reported.[78]
  • A magnitude 6.4 earthquake struck the Andreanof Islands, Alaska on November 6 at a depth of 34.0 km.[79]
  • A magnitude 6.3 earthquake struck the Andreanof Islands, Alaska on November 6 at a depth of 41.0 km.[80]
  • A magnitude 6.1 earthquake struck the Kuril Islands, Russia on November 8 at a depth of 33.0 km.[81]
  • A magnitude 6.0 earthquake struck the Kuril Islands, Russia on November 11 at a depth of 51.0 km.[82]
  • A magnitude 5.5 earthquake struck Fars Province, Iran on November 11 at a depth of 11.0 km. The shock had a maximum intensity of VII (Very strong).[83] 1 person died and major damage was reported.[84]
  • A magnitude 6.1 earthquake struck off the east coast of Honshu, Japan on November 19 at a depth of 56.0 km. The shock had a maximum intensity of VI (Strong).[85]
  • A magnitude 5.1 earthquake struck the Azores Islands, Portugal on November 23 at a depth of 5.0 km. The shock had a maximum intensity of V (Moderate).[86] 1 person died and some damage was reported.[87]
  • A magnitude 5.7 earthquake struck south of Crete, Greece on November 29 at a depth of 26.0 km. The shock had a maximum intensity of VII (Very strong).[88] Some damage was reported.[89]
  • A magnitude 6.0 earthquake struck Vanuatu on November 30 at a depth of 124.0 km.[90]

December
December
Strongest magnitude7.5 Mw , Vanuatu
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.94
5.0−5.9125
4.0−4.9190
  • A magnitude 6.8 earthquake struck Vanuatu on December 9 at a depth of 39.0 km. The shock had a maximum intensity of VII (Very strong).[91]
  • A magnitude 6.3 aftershock struck Vanuatu on December 9 at a depth of 34.0 km.[92]
  • A magnitude 6.0 earthquake struck Sumba, Indonesia on December 19 at a depth of 58.0 km. The shock had a maximum intensity of V (Moderate).[93]
  • A magnitude 7.5 earthquake struck Vanuatu on December 28 at a depth of 26.0 km. The shock had a maximum intensity of VIII (Severe).[94] Some damage was caused.[95]
  • A magnitude 7.2 aftershock struck Vanuatu on December 29 at a depth of 47.0 km. The shock had a maximum intensity of VII (Very strong).[96] Some damage was caused.[97]
  • A magnitude 6.6 aftershock struck Vanuatu on December 30 at a depth of 10.0 km. The shock had a maximum intensity of VIII (Severe).[98]

References
  1. "M 6.2 – North Island of New Zealand". United States Geological Survey. January 5, 1973. Retrieved July 23, 2017.
  2. "M 6.1 – Vanuatu". United States Geological Survey. January 6, 1973. Retrieved July 23, 2017.
  3. "M 6.8 – New Britain region, Papua New Guinea". United States Geological Survey. January 18, 1973. Retrieved July 23, 2017.
  4. "M 6.1 – offshore Jalisco, Mexico". United States Geological Survey. January 22, 1973. Retrieved July 23, 2017.
  5. "M 7.5 – Michoacan, Mexico". United States Geological Survey. January 30, 1973. Retrieved July 23, 2017.
  6. "Significant Earthquake: MEXICO: S, FARIAS, TECOMAN". National Geophysical Data Center. January 30, 1973. Retrieved July 23, 2017.
  7. "M 6.1 – Jujuy, Argentina". United States Geological Survey. February 1, 1973. Retrieved July 23, 2017.
  8. "M 7.4 – western Sichuan, China". United States Geological Survey. February 6, 1973. Retrieved July 23, 2017.
  9. "Significant Earthquake: CHINA: SICHUAN PROVINCE". National Geophysical Data Center. February 6, 1973. Retrieved July 23, 2017.
  10. "M 5.1 – North Island of New Zealand". United States Geological Survey. February 21, 1973. Retrieved July 23, 2017.
  11. "Significant Earthquake: NEW ZEALAND: HAWKES BAY". National Geophysical Data Center. February 21, 1973. Retrieved July 23, 2017.
  12. "M 5.3 – 22km W of Malibu, CA". United States Geological Survey. February 21, 1973. Retrieved July 23, 2017.
  13. "Significant Earthquake: CALIFORNIA: OXNARD". National Geophysical Data Center. February 21, 1973. Retrieved July 23, 2017.
  14. "M 5.2 – southern Iran". United States Geological Survey. February 24, 1973. Retrieved July 23, 2017.
  15. "Significant Earthquake: IRAN: KHABIS,HENGAM ISLAND". National Geophysical Data Center. February 24, 1973. Retrieved July 23, 2017.
  16. "M 6.0 – Vanuatu". United States Geological Survey. February 24, 1973. Retrieved July 23, 2017.
  17. "M 7.2 – Kuril Islands". United States Geological Survey. February 28, 1973. Retrieved July 23, 2017.
  18. "Significant Earthquake: RUSSIA: KURIL ISLANDS, HIROO, URAKAWA". National Geophysical Data Center. February 28, 1973. Retrieved July 23, 2017.
  19. "M 6.1 – near the east coast of the Kamchatka Peninsula, Russia". United States Geological Survey. March 4, 1973. Retrieved July 23, 2017.
  20. "M 5.5 – near the southeast coast of Australia". United States Geological Survey. March 9, 1973. Retrieved July 23, 2017.
  21. "Significant Earthquake: AUSTRALIA: WOLLONGONG, SYDNEY". National Geophysical Data Center. March 9, 1973. Retrieved July 23, 2017.
  22. "M 6.1 – Kuril Islands". United States Geological Survey. March 12, 1973. Retrieved July 23, 2017.
  23. "M 6.0 – Vanuatu". United States Geological Survey. March 17, 1973. Retrieved July 23, 2017.
  24. "M 7.0 – Luzon, Philippines". United States Geological Survey. March 17, 1973. Retrieved July 23, 2017.
  25. "Significant Earthquake: PHILIPPINES: QUEZON CITY: CALAUG,LOPEZ,GUIAYANGAN". National Geophysical Data Center. March 17, 1973. Retrieved July 23, 2017.
  26. "M 6.5 – Molucca Sea". United States Geological Survey. March 18, 1973. Retrieved July 23, 2017.
  27. "M 5.9 – Golfe de Tadjoura, Djibouti". United States Geological Survey. April 1, 1973. Retrieved July 23, 2017.
  28. "Significant Earthquake: ETHIOPIA: DJIBOUTI". National Geophysical Data Center. April 1, 1973. Retrieved July 23, 2017.
  29. "M 6.2 – Colombia". United States Geological Survey. April 3, 1973. Retrieved July 23, 2017.
  30. "M 6.6 – Nicobar Islands, India region". United States Geological Survey. April 7, 1973. Retrieved July 23, 2017.
  31. "M 6.4 – Vanuatu". United States Geological Survey. April 8, 1973. Retrieved July 23, 2017.
  32. "M 6.1 – Kuril Islands". United States Geological Survey. April 12, 1973. Retrieved July 23, 2017.
  33. "M 6.5 – Costa Rica". United States Geological Survey. April 14, 1973. Retrieved July 23, 2017.
  34. "Significant Earthquake: COSTA RICA: TILARAN, ARENAL, RIO CHIQUITO". National Geophysical Data Center. April 14, 1973. Retrieved July 23, 2017.
  35. "M 6.4 – near the south coast of Papua, Indonesia". United States Geological Survey. April 17, 1973. Retrieved July 23, 2017.
  36. "M 6.5 – south of Panama". United States Geological Survey. April 24, 1973. Retrieved July 23, 2017.
  37. "Significant Earthquake: COLOMBIA; SAN CRISTOBAL, VENEZUELA". National Geophysical Data Center. April 24, 1973. Retrieved July 23, 2017.
  38. "M 6.1 – Hawaii region, Hawaii". United States Geological Survey. April 26, 1973. Retrieved July 23, 2017.
  39. "Significant Earthquake: HAWAII: HILO". National Geophysical Data Center. April 26, 1973. Retrieved July 23, 2017.
  40. "M 6.0 – Unimak Island region, Alaska". United States Geological Survey. May 29, 1973. Retrieved July 24, 2017.
  41. "M 6.1 – Vanuatu". United States Geological Survey. June 5, 1973. Retrieved July 24, 2017.
  42. "M 6.3 – Solomon Islands". United States Geological Survey. June 9, 1973. Retrieved July 24, 2017.
  43. "M 7.7 – Hokkaido, Japan region". United States Geological Survey. June 17, 1973. Retrieved July 24, 2017.
  44. "Significant Earthquake: JAPAN: HOKKAIDO ISLAND". National Geophysical Data Center. June 17, 1973. Retrieved July 24, 2017.
  45. "M 6.0 – off the coast of Hokkaido, Japan". United States Geological Survey. June 17, 1973. Retrieved July 24, 2017.
  46. "M 7.1 – Kuril Islands". United States Geological Survey. June 24, 1973. Retrieved July 24, 2017.
  47. "Significant Earthquake: RUSSIA: KURIL ISLANDS". National Geophysical Data Center. June 24, 1973. Retrieved July 24, 2017.
  48. "M 6.6 – Kuril Islands". United States Geological Survey. June 24, 1973. Retrieved July 24, 2017.
  49. "M 6.7 – off the coast of Southeastern Alaska". United States Geological Survey. July 1, 1973. Retrieved July 24, 2017.
  50. "M 6.0 – Samar, Philippines". United States Geological Survey. July 3, 1973. Retrieved July 24, 2017.
  51. "M 6.5 – Samar, Philippines". United States Geological Survey. July 3, 1973. Retrieved July 24, 2017.
  52. "M 6.0 – Catanduanes, Philippines". United States Geological Survey. July 5, 1973. Retrieved July 24, 2017.
  53. "M 6.9 – western Xizang". United States Geological Survey. July 14, 1973. Retrieved July 24, 2017.
  54. "M 6.3 – offshore Atacama, Chile". United States Geological Survey. July 31, 1973. Retrieved July 24, 2017.
  55. "M 6.0 – Solomon Islands". United States Geological Survey. July 31, 1973. Retrieved July 24, 2017.
  56. "M 6.1 – Vanuatu". United States Geological Survey. August 1, 1973. Retrieved July 25, 2017.
  57. "M 6.1 – Tonga". United States Geological Survey. August 5, 1973. Retrieved July 25, 2017.
  58. "M 6.1 – offshore Atacama, Chile". United States Geological Survey. August 7, 1973. Retrieved July 25, 2017.
  59. "M 6.3 – offshore Atacama, Chile". United States Geological Survey. August 7, 1973. Retrieved July 25, 2017.
  60. "M 6.0 – Kuril Islands". United States Geological Survey. August 9, 1973. Retrieved July 25, 2017.
  61. "M 6.1 – Sichuan-Gansu border region, China". United States Geological Survey. August 11, 1973. Retrieved July 25, 2017.
  62. "M 6.0 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. August 13, 1973. Retrieved July 25, 2017.
  63. "M 6.4 – Yunnan, China". United States Geological Survey. August 16, 1973. Retrieved July 25, 2017.
  64. "M 6.1 – Panay, Philippines". United States Geological Survey. August 18, 1973. Retrieved July 25, 2017.
  65. "M 6.8 – Oaxaca, Mexico". United States Geological Survey. August 28, 1973. Retrieved July 25, 2017.
  66. "Significant Earthquake: MEXICO: VERACRUZ, MEXICO CITY". National Geophysical Data Center. August 28, 1973. Retrieved July 25, 2017.
  67. "M 6.0 – China-Russia-North Korea border region". United States Geological Survey. September 10, 1973. Retrieved July 25, 2017.
  68. "M 6.0 – Negros – Cebu region, Philippines". United States Geological Survey. September 20, 1973. Retrieved July 25, 2017.
  69. "M 6.5 – North Korea". United States Geological Survey. September 29, 1973. Retrieved July 25, 2017.
  70. "M 6.5 – offshore Valparaiso, Chile". United States Geological Survey. October 5, 1973. Retrieved July 26, 2017.
  71. "M 6.7 – offshore Valparaiso, Chile". United States Geological Survey. October 5, 1973. Retrieved July 26, 2017.
  72. "Significant Earthquake: CHILE: VALPARAISO, LA LIGUA, SANTIAGO". National Geophysical Data Center. October 5, 1973. Retrieved July 26, 2017.
  73. "M 7.0 – east of the South Sandwich Islands". United States Geological Survey. October 6, 1973. Retrieved July 26, 2017.
  74. "M 6.4 – Vanuatu". United States Geological Survey. October 9, 1973. Retrieved July 26, 2017.
  75. "M 6.0 – Jalisco, Mexico". United States Geological Survey. October 18, 1973. Retrieved July 26, 2017.
  76. "M 6.1 – Tarija, Bolivia". United States Geological Survey. October 25, 1973. Retrieved July 26, 2017.
  77. "M 5.8 – Greece". United States Geological Survey. November 4, 1973. Retrieved July 26, 2017.
  78. "Significant Earthquake: GREECE: LEUKAS ISLAND, PREVEZA, VONITSA". National Geophysical Data Center. November 4, 1973. Retrieved July 26, 2017.
  79. "M 6.4 – Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 6, 1973. Retrieved July 26, 2017.
  80. "M 6.3 – Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 6, 1973. Retrieved July 26, 2017.
  81. "M 6.1 – Kuril Islands". United States Geological Survey. November 8, 1973. Retrieved July 26, 2017.
  82. "M 6.0 – Kuril Islands". United States Geological Survey. November 11, 1973. Retrieved July 26, 2017.
  83. "M 5.5 – central Iran". United States Geological Survey. November 11, 1973. Retrieved July 26, 2017.
  84. "Significant Earthquake: IRAN: QESHLAGH,DEH BID". National Geophysical Data Center. November 11, 1973. Retrieved July 26, 2017.
  85. "M 6.1 – near the east coast of Honshu, Japan". United States Geological Survey. November 19, 1973. Retrieved July 26, 2017.
  86. "M 5.1 – Azores Islands, Portugal". United States Geological Survey. November 23, 1973. Retrieved July 26, 2017.
  87. "Significant Earthquake: AZORES: PICO, FAIAL, TERCEIRA". National Geophysical Data Center. November 23, 1973. Retrieved July 26, 2017.
  88. "M 5.7 – Crete, Greece". United States Geological Survey. November 29, 1973. Retrieved July 26, 2017.
  89. "Significant Earthquake: GREECE: CRETE, PALAEOCHORA, CHANIA". National Geophysical Data Center. November 29, 1973. Retrieved July 26, 2017.
  90. "M 6.0 – Vanuatu". United States Geological Survey. November 30, 1973. Retrieved July 26, 2017.
  91. "M 6.8 – Vanuatu". United States Geological Survey. December 9, 1973. Retrieved July 26, 2017.
  92. "M 6.3 – Vanuatu". United States Geological Survey. December 9, 1973. Retrieved July 26, 2017.
  93. "M 6.0 – Sumba region, Indonesia". United States Geological Survey. December 19, 1973. Retrieved July 26, 2017.
  94. "M 7.5 – Vanuatu". United States Geological Survey. December 28, 1973. Retrieved July 26, 2017.
  95. "Significant Earthquake: VANUATU ISLANDS: ESPIRITU SANTO, LUGANILLE". National Geophysical Data Center. December 28, 1973. Retrieved July 26, 2017.
  96. "M 7.2 – Vanuatu". United States Geological Survey. December 29, 1973. Retrieved July 26, 2017.
  97. "Significant Earthquake: VANUATU ISLANDS: LUGANVILLE, LAMAP". National Geophysical Data Center. December 29, 1973. Retrieved July 26, 2017.
  98. "M 6.6 – Vanuatu". United States Geological Survey. December 30, 1973. Retrieved July 26, 2017.
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