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Earthquakes in 1973 Approximate epicenters of the earthquakes in 1973
Strongest magnitude Japan off the east coast of Hokkaido (Magnitude 7.7) June 17Deadliest China , Sichuan Province (Magnitude 7.4) February 6, 2,199 deathsTotal fatalities 2,899 9.0+ 0 8.0–8.9 0 7.0–7.9 9 6.0–6.9 57 5.0–5.9 1333 4.0–4.9 2557
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 New Hebrides were active during the year with each country having 2 magnitude 7.0+ events. Nearly 3,000 deaths were reported with China being worst affected. Mexico also had a significant death toll.
Overall
By death toll
Note : At least 10 casualties
By magnitude
Rank
Magnitude
Death toll
Location
MMI
Depth (km)
Date
1
7.7
0
Japan , off the east coast of Hokkaido
VIII (Severe )
48.0
June 17
2
7.5
56
Mexico , Michoacán
X (Extreme )
43.0
January 30
2
7.5
0
New Hebrides , Vanuatu
VIII (Severe )
26.0
December 28
3
7.4
2,199
China , Sichuan Province
X (Extreme )
33.0
February 6
4
7.2
0
Soviet Union , Kuril Islands , Russia
VIII (Severe )
27.0
February 28
4
7.2
0
New Hebrides , Vanuatu
VIII (Severe )
47.0
December 29
5
7.1
0
Soviet Union , Kuril Islands , Russia
VIII (Severe )
50.0
June 24
6
7.0
15
Philippines , Luzon
IX (Violent )
33.0
March 17
6
7.0
0
United Kingdom , east of the South Sandwich Islands
( )
33.0
October 6
Note : At least 7.0 magnitude
Notable events
January
January Strongest magnitude 7.5 Mw Mexico Deadliest 7.5 Mw Mexico 56 deaths Total fatalities 56 8.0–8.9 0 7.0–7.9 1 6.0–6.9 4 5.0–5.9 101 4.0–4.9 193
February
February Strongest magnitude 7.4 Mw China Deadliest 7.4 Mw China 2,199 deaths Total fatalities 2,199 8.0–8.9 0 7.0–7.9 2 6.0–6.9 2 5.0–5.9 96 4.0–4.9 204
Date
Country and location
Mw
Depth (km)
MMI
Notes
Casualties
Dead
Injured
1 [ 11]
Argentina , Jujuy Province
6.1
229.0
6 [ 12] [ 13] [ 14] [ 15]
China , Sichuan Province
7.4
33.0
X
Deadliest event of 1973. 2,199 people were killed and 2,743 were injured in the 1973 Luhuo earthquake . 168 homes were destroyed.
2,199
2,743
21 [ 16] [ 17] [ 18]
New Zealand , Hawke's Bay Region , North Island
5.1
38.0
VI
Some damage was caused.
21 [ 19] [ 20] [ 21]
United States , southern California
5.3
10.0
VII
The 1973 Point Mugu earthquake caused $1 million (1973 rate) in property damage.
24 [ 22] [ 23]
Iran , Fars Province
5.2
27.0
Major damage was caused.
24 [ 24]
New Hebrides , Vanuatu
6.0
59.0
28 [ 25] [ 26] [ 27]
Soviet Union , Kuril Islands , Russia
7.2
27.0
VIII
Some damage was caused.
March
March Strongest magnitude 7.0 Mw Philippines Deadliest 7.0 Mw Philippines 15 deaths Total fatalities 15 8.0–8.9 0 7.0–7.9 1 6.0–6.9 4 5.0–5.9 105 4.0–4.9 208
Date
Country and location
Mw
Depth (km)
MMI
Notes
Casualties
Dead
Injured
4 [ 28]
Soviet Union , eastern Kamchatka , Russia
6.1
32.0
9 [ 29] [ 30] [ 31]
Australia , New South Wales
5.5
13.0
VII
Property damage was caused with costs reaching $500,000 (1973 rate).
12 [ 32] [ 33]
Soviet Union , Kuril Islands , Russia
6.1
54.0
V
Aftershock of February 28 event.
17 [ 34]
New Hebrides , Vanuatu
6.0
194.0
17 [ 35] [ 36] [ 37]
Philippines , Luzon
7.0
33.0
VII
The 1973 Ragay Gulf earthquake killed 15 people and 64 others were injured. Damage costs were around $450,000 (1973 rate).
15
64
18 [ 38]
Indonesia , Molucca Sea
6.5
33.0
April
April Strongest magnitude 6.6 Mw India Deadliest 6.5 Mw Costa Rica 26 deaths Total fatalities 27 8.0–8.9 0 7.0–7.9 0 6.0–6.9 8 5.0–5.9 88 4.0–4.9 287
Date
Country and location
Mw
Depth (km)
MMI
Notes
Casualties
Dead
Injured
1 [ 39] [ 40] [ 41]
France , Gulf of Tadjoura , Djibouti
5.9
31.0
VII
Some damage was caused.
3 [ 42] [ 43]
Colombia , Quindío Department
6.2
158.0
IV
7 [ 44]
India , Nicobar Islands
6.6
33.0
8 [ 45] [ 46]
New Hebrides , Vanuatu
6.4
35.0
VI
12 [ 47]
Soviet Union , Kuril Islands , Russia
6.1
52.0
Aftershock of February 28 event.
14 [ 48] [ 49] [ 50]
Costa Rica , Alajuela Province
6.5
33.0
VI
26 people were killed and 100 were injured. Damage costs were $200,000 (1973 rate).
26
100
17 [ 51] [ 52]
Indonesia , Papua (province)
6.4
33.0
VI
24 [ 53] [ 54] [ 55]
Colombia , off the west coast of
6.5
50.0
IV
1 person died and some damage was reported.
1
26 [ 56] [ 57] [ 58]
United States , Hawaii (island)
6.2
36.9
VIII
11 people were injured and some property damage was reported. Costs were $5.75 million (1973 rate).
11
May
May Strongest magnitude 6.0 Mw United States Total fatalities 0 8.0–8.9 0 7.0–7.9 0 6.0–6.9 1 5.0–5.9 83 4.0–4.9 190
Date
Country and location
Mw
Depth (km)
MMI
Notes
Casualties
Dead
Injured
29 [ 59] [ 60]
United States , Unimak Island , Alaska
6.0
30.0
V
Although in a remote location this was the only magnitude 6.0+ event of the month.
June
June Strongest magnitude 7.7 Mw Japan Total fatalities 0 8.0–8.9 0 7.0–7.9 2 6.0–6.9 4 5.0–5.9 155 4.0–4.9 269
July
July Strongest magnitude 6.9 Mw China Total fatalities 0 8.0–8.9 0 7.0–7.9 0 6.0–6.9 7 5.0–5.9 153 4.0–4.9 234
August
August Strongest magnitude 6.8 Mw Mexico Deadliest 6.8 Mw Mexico 600 deaths Total fatalities 600 8.0–8.9 0 7.0–7.9 0 6.0–6.9 10 5.0–5.9 104 4.0–4.9 189
Date
Country and location
Mw
Depth (km)
MMI
Notes
Casualties
Dead
Injured
1 [ 88] [ 89]
New Hebrides , Vanuatu
6.1
200.0
IV
5 [ 90]
Tonga
6.1
33.0
7 [ 91] [ 92]
Chile , off the coast of Atacama Region
6.1
25.0
VI
Foreshock.
7 [ 93] [ 94]
Chile , off the coast of Atacama Region
6.3
14.0
VII
9 [ 95] [ 96]
Soviet Union , southern Kuril Islands , Russia
6.0
55.0
V
11 [ 97] [ 98]
China , Sichuan Province
6.1
33.0
VII
13 [ 99] [ 100]
Australia , East Sepik Province , Papua New Guinea
6.0
112.0
IV
16 [ 101] [ 102]
China , Yunnan Province
6.4
33.0
VI
18 [ 103] [ 104]
Philippines , west of Panay
6.1
14.0
VI
28 [ 105] [ 106] [ 107]
Mexico , Oaxaca
6.8
84.0
VIII
The 1973 Veracruz earthquake caused 600 deaths as well as major damage.
600
September
September Strongest magnitude 6.5 Mw North Korea Total fatalities 0 8.0–8.9 0 7.0–7.9 0 6.0–6.9 3 5.0–5.9 96 4.0–4.9 173
October
October Strongest magnitude 7.0 Mw United Kingdom Total fatalities 0 8.0–8.9 0 7.0–7.9 1 6.0–6.9 5 5.0–5.9 99 4.0–4.9 232
November
November Strongest magnitude 6.4 Mw United States Deadliest 2 events caused 1 death each in Iran and Portugal Total fatalities 2 8.0–8.9 0 7.0–7.9 0 6.0–6.9 6 5.0–5.9 128 4.0–4.9 188
Date
Country and location
Mw
Depth (km)
MMI
Notes
Casualties
Dead
Injured
4 [ 125] [ 126] [ 127]
Greece , off the west coast
5.8
8.0
VIII
Some damage was reported.
6 [ 128] [ 129]
United States , Andreanof Islands , Alaska
6.4
34.0
IV
Doublet earthquake
6 [ 130] [ 131]
United States , Andreanof Islands , Alaska
6.3
41.0
IV
8 [ 132] [ 133]
Soviet Union , Kuril Islands , Russia
6.1
33.0
V
Doublet earthquake
11 [ 134]
Soviet Union , Kuril Islands , Russia
6.0
51.0
11 [ 135] [ 136] [ 137]
Iran , Fars Province
5.5
11.0
VII
1 person was killed and major damage was reported.
1
19 [ 138] [ 139]
Japan , off the east coast of Honshu
6.1
56.0
VI
23 [ 140] [ 141] [ 142]
Portugal , Azores Islands
5.1
5.0
VIII
1 person died and some damage was caused.
1
29 [ 143] [ 144] [ 145]
Greece , south of Crete
5.7
26.0
VIII
Some damage was reported.
30 [ 146] [ 147]
New Hebrides , Vanuatu
6.0
124.0
IV
December
December Strongest magnitude 7.5 Mw New Hebrides , Vanuatu Total fatalities 0 8.0–8.9 0 7.0–7.9 2 6.0–6.9 4 5.0–5.9 125 4.0–4.9 190
References
^ "M 6.2 - North Island of New Zealand" . United States Geological Survey . January 5, 1973. Retrieved July 23, 2017 .
^ "M 6.2 - North Island of New Zealand" . United States Geological Survey . January 5, 1973. Retrieved April 19, 2021 .
^ "M 6.1 - Vanuatu" . United States Geological Survey . January 6, 1973. Retrieved July 23, 2017 .
^ "M 6.1 - Vanuatu" . United States Geological Survey . January 6, 1973. Retrieved April 19, 2021 .
^ "M 6.8 - New Britain region, Papua New Guinea" . United States Geological Survey . January 18, 1973. Retrieved July 23, 2017 .
^ "M 6.8 - New Britain region, Papua New Guinea" . United States Geological Survey . January 18, 1973. Retrieved April 19, 2021 .
^ "M 6.1 - offshore Jalisco, Mexico" . United States Geological Survey . January 22, 1973. Retrieved July 23, 2017 .
^ "M 7.5 - Michoacan, Mexico" . United States Geological Survey . January 30, 1973. Retrieved July 23, 2017 .
^ "M 7.5 - Michoacan, Mexico" . United States Geological Survey . January 30, 1973. Retrieved April 19, 2021 .
^ "Significant Earthquake: MEXICO: S, FARIAS, TECOMAN" . National Geophysical Data Center . January 30, 1973. Retrieved April 19, 2021 .
^ "M 6.1 - Jujuy, Argentina" . United States Geological Survey . February 1, 1973. Retrieved July 23, 2017 .
^ "M 7.4 - western Sichuan, China" . United States Geological Survey . February 6, 1973. Retrieved July 23, 2017 .
^ "M 7.4 - western Sichuan, China" . United States Geological Survey . February 6, 1973. Retrieved April 20, 2021 .
^ "Significant Earthquake: CHINA: SICHUAN PROVINCE" . National Geophysical Data Center . February 6, 1973. Retrieved April 20, 2021 .
^ Utsu, T. "Search Page" . Catalog of Damaging Earthquakes in the World (Through 2008) . Retrieved April 20, 2021 .
^ "M 5.1 - North Island of New Zealand" . United States Geological Survey . February 21, 1973. Retrieved July 23, 2017 .
^ "M 5.1 - North Island of New Zealand" . United States Geological Survey . February 21, 1973. Retrieved April 20, 2021 .
^ "Significant Earthquake: NEW ZEALAND: HAWKES BAY" . National Geophysical Data Center . February 21, 1973. Retrieved April 20, 2021 .
^ "M 5.3 - 22km W of Malibu, CA" . United States Geological Survey . February 21, 1973. Retrieved July 23, 2017 .
^ "M 5.3 - 22km W of Malibu, CA" . United States Geological Survey . February 21, 1973. Retrieved April 20, 2021 .
^ "Significant Earthquake: CALIFORNIA: OXNARD" . National Geophysical Data Center . February 21, 1973. Retrieved April 20, 2021 .
^ "M 5.2 - southern Iran" . United States Geological Survey . February 24, 1973. Retrieved July 23, 2017 .
^ "Significant Earthquake: IRAN: KHABIS,HENGAM ISLAND" . National Geophysical Data Center . February 24, 1973. Retrieved April 20, 2021 .
^ "M 6.0 - Vanuatu" . United States Geological Survey . February 24, 1973. Retrieved July 23, 2017 .
^ "M 7.2 - Kuril Islands" . United States Geological Survey . February 28, 1973. Retrieved July 23, 2017 .
^ "M 7.2 - Kuril Islands" . United States Geological Survey . February 28, 1973. Retrieved April 20, 2021 .
^ "Significant Earthquake: RUSSIA: KURIL ISLANDS, HIROO, URAKAWA" . National Geophysical Data Center . February 28, 1973. Retrieved April 20, 2021 .
^ "M 6.1 - near the east coast of the Kamchatka Peninsula, Russia" . United States Geological Survey . March 4, 1973. Retrieved July 23, 2017 .
^ "M 5.5 - near the southeast coast of Australia" . United States Geological Survey . March 9, 1973. Retrieved July 23, 2017 .
^ "M 5.5 - near the southeast coast of Australia" . United States Geological Survey . March 9, 1973. Retrieved May 4, 2021 .
^ "Significant Earthquake: AUSTRALIA: WOLLONGONG, SYDNEY" . National Geophysical Data Center . March 9, 1973. Retrieved May 4, 2021 .
^ "M 6.1 - Kuril Islands" . United States Geological Survey . March 12, 1973. Retrieved July 23, 2017 .
^ "M 6.1 - Kuril Islands" . United States Geological Survey . March 12, 1973. Retrieved May 4, 2021 .
^ "M 6.0 - Vanuatu" . United States Geological Survey . March 17, 1973. Retrieved July 23, 2017 .
^ "M 7.0 - Luzon, Philippines" . United States Geological Survey . March 17, 1973. Retrieved July 23, 2017 .
^ "M 7.0 - Luzon, Philippines" . United States Geological Survey . March 17, 1973. Retrieved May 4, 2021 .
^ "Significant Earthquake: PHILIPPINES: QUEZON CITY: CALAUG,LOPEZ,GUIAYANGAN" . National Geophysical Data Center . March 17, 1973. Retrieved May 4, 2021 .
^ "M 6.5 - Molucca Sea" . United States Geological Survey . March 18, 1973. Retrieved July 23, 2017 .
^ "M 5.9 - Golfe de Tadjoura, Djibouti" . United States Geological Survey . April 1, 1973. Retrieved July 23, 2017 .
^ "M 5.9 - Golfe de Tadjoura, Djibouti" . United States Geological Survey . April 1, 1973. Retrieved May 8, 2021 .
^ "Significant Earthquake: ETHIOPIA: DJIBOUTI" . National Geophysical Data Center . April 1, 1973. Retrieved May 8, 2021 .
^ "M 6.2 - Colombia" . United States Geological Survey . April 3, 1973. Retrieved July 23, 2017 .
^ "M 6.2 - Colombia" . United States Geological Survey . April 3, 1973. Retrieved May 8, 2021 .
^ "M 6.6 - Nicobar Islands, India region" . United States Geological Survey . April 7, 1973. Retrieved July 23, 2017 .
^ "M 6.4 - Vanuatu" . United States Geological Survey . April 8, 1973. Retrieved July 23, 2017 .
^ "M 6.4 - Vanuatu" . United States Geological Survey . April 8, 1973. Retrieved May 8, 2021 .
^ "M 6.1 - Kuril Islands" . United States Geological Survey . April 12, 1973. Retrieved July 23, 2017 .
^ "M 6.5 - Costa Rica" . United States Geological Survey . April 14, 1973. Retrieved July 23, 2017 .
^ "M 6.5 - Costa Rica" . United States Geological Survey . April 14, 1973. Retrieved May 8, 2021 .
^ "Significant Earthquake: COSTA RICA: TILARAN, ARENAL, RIO CHIQUITO" . National Geophysical Data Center . April 14, 1973. Retrieved May 8, 2021 .
^ "M 6.4 - near the south coast of Papua, Indonesia" . United States Geological Survey . April 17, 1973. Retrieved July 23, 2017 .
^ "M 6.4 - near the south coast of Papua, Indonesia" . United States Geological Survey . April 17, 1973. Retrieved May 8, 2021 .
^ "M 6.5 - south of Panama" . United States Geological Survey . April 24, 1973. Retrieved July 23, 2017 .
^ "M 6.5 - south of Panama" . United States Geological Survey . April 24, 1973. Retrieved May 8, 2021 .
^ "Significant Earthquake: COLOMBIA; SAN CRISTOBAL, VENEZUELA" . National Geophysical Data Center . April 24, 1973. Retrieved May 8, 2021 .
^ "M 6.2 - Hawaii region, Hawaii" . United States Geological Survey . April 26, 1973. Retrieved May 8, 2021 .
^ "M 6.2 - Hawaii region, Hawaii" . United States Geological Survey . April 26, 1973. Retrieved May 8, 2021 .
^ "Significant Earthquake: HAWAII: HILO" . National Geophysical Data Center . April 26, 1973. Retrieved May 8, 2021 .
^ "M 6.0 - Unimak Island region, Alaska" . United States Geological Survey . May 29, 1973. Retrieved July 24, 2017 .
^ "M 6.0 - Unimak Island region, Alaska" . United States Geological Survey . May 29, 1973. Retrieved May 9, 2021 .
^ "M 6.1 - Vanuatu" . United States Geological Survey . June 5, 1973. Retrieved July 24, 2017 .
^ "M 6.1 - Vanuatu" . United States Geological Survey . June 5, 1973. Retrieved May 9, 2021 .
^ "M 6.3 - Solomon Islands" . United States Geological Survey . June 9, 1973. Retrieved July 24, 2017 .
^ "M 6.3 - Solomon Islands" . United States Geological Survey . June 9, 1973. Retrieved May 9, 2021 .
^ "M 7.7 - Hokkaido, Japan region" . United States Geological Survey . June 17, 1973. Retrieved July 24, 2017 .
^ "M 7.7 - Hokkaido, Japan region" . United States Geological Survey . June 17, 1973. Retrieved May 9, 2021 .
^ "Significant Earthquake: JAPAN: HOKKAIDO ISLAND" . National Geophysical Data Center . June 17, 1973. Retrieved May 9, 2021 .
^ "M 6.0 - off the coast of Hokkaido, Japan" . United States Geological Survey . June 17, 1973. Retrieved July 24, 2017 .
^ "M 7.1 - Kuril Islands" . United States Geological Survey . June 24, 1973. Retrieved July 24, 2017 .
^ "M 7.1 - Kuril Islands" . United States Geological Survey . June 24, 1973. Retrieved May 9, 2021 .
^ "Significant Earthquake: RUSSIA: KURIL ISLANDS" . National Geophysical Data Center . June 24, 1973. Retrieved May 9, 2021 .
^ "M 6.6 - Kuril Islands" . United States Geological Survey . June 26, 1973. Retrieved July 24, 2017 .
^ "M 6.6 - Kuril Islands" . United States Geological Survey . June 26, 1973. Retrieved May 9, 2021 .
^ "M 6.7 - off the coast of Southeastern Alaska" . United States Geological Survey . July 1, 1973. Retrieved July 24, 2017 .
^ "M 6.7 - off the coast of Southeastern Alaska" . United States Geological Survey . July 1, 1973. Retrieved May 12, 2021 .
^ "M 6.0 - Samar, Philippines" . United States Geological Survey . July 3, 1973. Retrieved July 24, 2017 .
^ "M 6.0 - Samar, Philippines" . United States Geological Survey . July 3, 1973. Retrieved May 12, 2021 .
^ "M 6.5 - Samar, Philippines" . United States Geological Survey . July 3, 1973. Retrieved July 24, 2017 .
^ "M 6.5 - Samar, Philippines" . United States Geological Survey . July 3, 1973. Retrieved May 12, 2021 .
^ "M 6.0 - Catanduanes, Philippines" . United States Geological Survey . July 5, 1973. Retrieved July 24, 2017 .
^ "M 6.0 - Catanduanes, Philippines" . United States Geological Survey . July 5, 1973. Retrieved May 12, 2021 .
^ "M 6.9 - western Xizang" . United States Geological Survey . July 14, 1973. Retrieved July 24, 2017 .
^ "M 6.9 - western Xizang" . United States Geological Survey . July 14, 1973. Retrieved May 12, 2021 .
^ "M 6.3 - offshore Atacama, Chile" . United States Geological Survey . July 31, 1973. Retrieved July 24, 2017 .
^ "M 6.3 - offshore Atacama, Chile" . United States Geological Survey . July 31, 1973. Retrieved May 12, 2021 .
^ "M 6.0 - Solomon Islands" . United States Geological Survey . July 31, 1973. Retrieved July 24, 2017 .
^ "M 6.0 - Solomon Islands" . United States Geological Survey . July 31, 1973. Retrieved May 12, 2021 .
^ "M 6.1 - Vanuatu" . United States Geological Survey . August 1, 1973. Retrieved July 25, 2017 .
^ "M 6.1 - Vanuatu" . United States Geological Survey . August 1, 1973. Retrieved May 12, 2021 .
^ "M 6.1 - Tonga" . United States Geological Survey . August 5, 1973. Retrieved July 25, 2017 .
^ "M 6.1 - offshore Atacama, Chile" . United States Geological Survey . August 7, 1973. Retrieved July 25, 2017 .
^ "M 6.1 - offshore Atacama, Chile" . United States Geological Survey . August 7, 1973. Retrieved May 12, 2021 .
^ "M 6.3 - offshore Atacama, Chile" . United States Geological Survey . August 7, 1973. Retrieved July 25, 2017 .
^ "M 6.3 - offshore Atacama, Chile" . United States Geological Survey . August 7, 1973. Retrieved May 12, 2021 .
^ "M 6.0 - Kuril Islands" . United States Geological Survey . August 9, 1973. Retrieved July 25, 2017 .
^ "M 6.0 - Kuril Islands" . United States Geological Survey . August 9, 1973. Retrieved May 12, 2021 .
^ "M 6.1 - Sichuan-Gansu border region, China" . United States Geological Survey . August 11, 1973. Retrieved July 25, 2017 .
^ "M 6.1 - Sichuan-Gansu border region, China" . United States Geological Survey . August 11, 1973. Retrieved May 12, 2021 .
^ "M 6.0 - near the north coast of New Guinea, Papua New Guinea" . United States Geological Survey . August 13, 1973. Retrieved July 25, 2017 .
^ "M 6.0 - near the north coast of New Guinea, Papua New Guinea" . United States Geological Survey . August 13, 1973. Retrieved May 12, 2021 .
^ "M 6.4 - Yunnan, China" . United States Geological Survey . August 16, 1973. Retrieved July 25, 2017 .
^ "M 6.4 - Yunnan, China" . United States Geological Survey . August 16, 1973. Retrieved May 12, 2021 .
^ "M 6.1 - Panay, Philippines" . United States Geological Survey . August 18, 1973. Retrieved July 25, 2017 .
^ "M 6.1 - Panay, Philippines" . United States Geological Survey . August 18, 1973. Retrieved May 12, 2021 .
^ "M 6.8 - Oaxaca, Mexico" . United States Geological Survey . August 28, 1973. Retrieved July 25, 2017 .
^ "M 6.8 - Oaxaca, Mexico" . United States Geological Survey . August 28, 1973. Retrieved May 12, 2021 .
^ "Significant Earthquake: MEXICO: VERACRUZ, MEXICO CITY" . National Geophysical Data Center . August 28, 1973. Retrieved May 12, 2021 .
^ "M 6.0 - China-Russia-North Korea border region" . United States Geological Survey . September 10, 1973. Retrieved July 25, 2017 .
^ "M 6.0 - China-Russia-North Korea border region" . United States Geological Survey . September 10, 1973. Retrieved May 15, 2021 .
^ "M 6.0 - Negros - Cebu region, Philippines" . United States Geological Survey . September 20, 1973. Retrieved July 25, 2017 .
^ "M 6.0 - Negros - Cebu region, Philippines" . United States Geological Survey . September 20, 1973. Retrieved May 15, 2021 .
^ "M 6.5 - North Korea" . United States Geological Survey . September 29, 1973. Retrieved July 25, 2017 .
^ "M 6.5 - North Korea" . United States Geological Survey . September 29, 1973. Retrieved May 15, 2021 .
^ "M 6.5 - offshore Valparaíso, Chile" . United States Geological Survey . October 5, 1973. Retrieved July 26, 2017 .
^ "M 6.5 - offshore Valparaiso, Chile" . United States Geological Survey . October 5, 1973. Retrieved May 15, 2021 .
^ "M 6.7 - offshore Valparaíso, Chile" . United States Geological Survey . October 5, 1973. Retrieved July 26, 2017 .
^ "M 6.7 - offshore Valparaiso, Chile" . United States Geological Survey . October 5, 1973. Retrieved May 15, 2021 .
^ "Significant Earthquake: CHILE: VALPARAISO, LA LIGUA, SANTIAGO" . National Geophysical Data Center . October 5, 1973. Retrieved May 15, 2021 .
^ "M 7.0 - east of the South Sandwich Islands" . United States Geological Survey . October 6, 1973. Retrieved July 26, 2017 .
^ "M 6.4 - Vanuatu" . United States Geological Survey . October 9, 1973. Retrieved July 26, 2017 .
^ "M 6.4 - Vanuatu" . United States Geological Survey . October 9, 1973. Retrieved May 15, 2021 .
^ "M 6.0 - Jalisco, Mexico" . United States Geological Survey . October 18, 1973. Retrieved July 26, 2017 .
^ "M 6.0 - Jalisco, Mexico" . United States Geological Survey . October 18, 1973. Retrieved May 15, 2021 .
^ "M 6.1 - Tarija, Bolivia" . United States Geological Survey . October 25, 1973. Retrieved July 26, 2017 .
^ "M 5.8 - Greece" . United States Geological Survey . November 4, 1973. Retrieved July 26, 2017 .
^ "M 5.8 - Greece" . United States Geological Survey . November 4, 1973. Retrieved May 15, 2021 .
^ "Significant Earthquake: GREECE: LEUKAS ISLAND, PREVEZA, VONITSA" . National Geophysical Data Center . November 4, 1973. Retrieved May 15, 2021 .
^ "M 6.4 - Andreanof Islands, Aleutian Islands, Alaska" . United States Geological Survey . November 6, 1973. Retrieved July 26, 2017 .
^ "M 6.4 - Andreanof Islands, Aleutian Islands, Alaska" . United States Geological Survey . November 6, 1973. Retrieved May 15, 2021 .
^ "M 6.3 - Andreanof Islands, Aleutian Islands, Alaska" . United States Geological Survey . November 6, 1973. Retrieved July 26, 2017 .
^ "M 6.3 - Andreanof Islands, Aleutian Islands, Alaska" . United States Geological Survey . November 6, 1973. Retrieved May 15, 2021 .
^ "M 6.1 - Kuril Islands" . United States Geological Survey . November 8, 1973. Retrieved July 26, 2017 .
^ "M 6.1 - Kuril Islands" . United States Geological Survey . November 8, 1973. Retrieved May 15, 2021 .
^ "M 6.0 - Kuril Islands" . United States Geological Survey . November 11, 1973. Retrieved July 26, 2017 .
^ "M 5.5 - central Iran" . United States Geological Survey . November 11, 1973. Retrieved July 26, 2017 .
^ "M 5.5 - central Iran" . United States Geological Survey . November 11, 1973. Retrieved May 15, 2021 .
^ "Significant Earthquake: IRAN: QESHLAGH,DEH BID" . National Geophysical Data Center . November 11, 1973. Retrieved May 15, 2021 .
^ "M 6.1 - near the east coast of Honshu, Japan" . United States Geological Survey . November 19, 1973. Retrieved July 26, 2017 .
^ "M 6.1 - near the east coast of Honshu, Japan" . United States Geological Survey . November 19, 1973. Retrieved May 15, 2021 .
^ "M 5.1 - Azores Islands, Portugal" . United States Geological Survey . November 23, 1973. Retrieved July 26, 2017 .
^ "M 5.1 - Azores Islands, Portugal" . United States Geological Survey . November 23, 1973. Retrieved May 15, 2021 .
^ "Significant Earthquake: AZORES: PICO, FAIAL, TERCEIRA" . National Geophysical Data Center . November 23, 1973. Retrieved May 15, 2021 .
^ "M 5.7 - Crete, Greece" . United States Geological Survey . November 29, 1973. Retrieved July 26, 2017 .
^ "M 5.7 - Crete, Greece" . United States Geological Survey . November 29, 1973. Retrieved May 15, 2021 .
^ "Significant Earthquake: GREECE: CRETE, PALAEOCHORA, CHANIA" . National Geophysical Data Center . November 29, 1973. Retrieved May 15, 2021 .
^ "M 6.0 - Vanuatu" . United States Geological Survey . November 30, 1973. Retrieved July 26, 2017 .
^ "M 6.0 - Vanuatu" . United States Geological Survey . November 30, 1973. Retrieved May 15, 2021 .
^ "M 6.8 - Vanuatu" . United States Geological Survey . December 9, 1973. Retrieved July 26, 2017 .
^ "M 6.8 - Vanuatu" . United States Geological Survey . December 9, 1973. Retrieved May 16, 2021 .
^ "M 6.3 - Vanuatu" . United States Geological Survey . December 9, 1973. Retrieved July 26, 2017 .
^ "M 6.0 - Sumba region, Indonesia" . United States Geological Survey . December 19, 1973. Retrieved July 26, 2017 .
^ "M 6.0 - Sumba region, Indonesia" . United States Geological Survey . December 19, 1973. Retrieved May 16, 2021 .
^ "M 7.5 - Vanuatu" . United States Geological Survey . December 28, 1973. Retrieved July 26, 2017 .
^ "M 7.5 - Vanuatu" . United States Geological Survey . December 28, 1973. Retrieved May 16, 2021 .
^ "Significant Earthquake: VANUATU ISLANDS: ESPIRITU SANTO, LUGANILLE" . National Geophysical Data Center . December 28, 1973. Retrieved May 16, 2021 .
^ "M 7.2 - Vanuatu" . United States Geological Survey . December 29, 1973. Retrieved July 26, 2017 .
^ "M 7.2 - Vanuatu" . United States Geological Survey . December 29, 1973. Retrieved May 16, 2021 .
^ "Significant Earthquake: VANUATU ISLANDS: LUGANVILLE, LAMAP" . National Geophysical Data Center . December 29, 1973. Retrieved May 16, 2021 .
^ "M 6.6 - Vanuatu" . United States Geological Survey . December 30, 1973. Retrieved July 26, 2017 .
^ "M 6.6 - Vanuatu" . United States Geological Survey . December 30, 1973. Retrieved May 16, 2021 .
† indicates earthquake resulting in at least 30 deaths ‡ indicates the deadliest earthquake of the year