List of earthquakes in 1973

Earthquakes in 1973

class=notpageimage| Approximate epicenters of the earthquakes in 1973 4.0–5.9 magnitude 6.0–6.9 magnitude 7.0–7.9 magnitude 8.0+ magnitude
Strongest magnitude	Japan off the east coast of Hokkaido (Magnitude 7.7) June 17
Deadliest	China, Sichuan Province (Magnitude 7.4) February 6, 2,199 deaths
Total fatalities	2,899
Number by magnitude
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
←  1972 1974  →

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

Rank	Death toll	Magnitude	Location	MMI	Depth (km)	Date
1	2,199	7.4	China, Sichuan Province	X (Extreme)	33.0	February 6
2	600	7.1	Mexico, Oaxaca	VIII (Severe)	84.0	August 28
3	56	7.5	Mexico, Michoacan	X (Extreme)	43.0	January 30
4	26	6.5	Costa Rica, Alajuela Province	VI (Strong)	33.0	April 14
5	15	7.0	Philippines, Luzon	IX (Violent)	33.0	March 17

• 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
Number by magnitude
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

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
5 [1] [2]	New Zealand, Manawatū-Whanganui, North Island	6.2	150.0	IV
6 [3] [4]	New Hebrides, Vanuatu	6.1	36.0	VI
18 [5] [6]	Australia, south of New Britain, Papua New Guinea	6.8	43.0	VI
22 [7]	Mexico, off the coast of Jalisco	6.1	33.0
30 [8] [9] [10]	Mexico, Michoacán	7.5	43.0	X	56 people were killed and 390 were injured in the 1973 Colima earthquake. Some homes were destroyed.	56	390

February

February

Strongest magnitude	7.4 Mw   China
Deadliest	7.4 Mw   China 2,199 deaths
Total fatalities	2,199
Number by magnitude
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
Number by magnitude
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
Number by magnitude
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
Number by magnitude
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
Number by magnitude
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

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
5 [61] [62]	New Hebrides, Vanuatu	6.1	24.0	IV
9 [63] [64]	United Kingdom, Makira, Solomon Islands	6.3	70.0	V
17 [65] [66] [67]	Japan, off the east coast of Hokkaido	7.7	48.0	VIII	Largest event of 1973. 27 people were injured in the 1973 Nemuro earthquake. 2 homes were destroyed. Overall damage costs were $5 million (1973 rate).		27
17 [68]	Japan, off the east coast of Hokkaido	6.0	50.0		Aftershock.
24 [69] [70] [71]	Soviet Union, Kuril Islands, Russia	7.1	50.0	VIII	1 person was injured and some damage was reported. Aftershock of June 17 event.		1
26 [72] [73]	Soviet Union, Kuril Islands, Russia	6.6	50.0	VI	Aftershock.

July

July

Strongest magnitude	6.9 Mw   China
Total fatalities	0
Number by magnitude
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

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
1 [74] [75]	United States, off the southeast coast of Alaska	6.7	33.0	VI
3 [76] [77]	Philippines, Samar	6.0	44.0	V	Foreshock.
3 [78] [79]	Philippines, Samar	6.5	33.0	VI
5 [80] [81]	Philippines, north of Samar	6.0	38.0	IV	Aftershock.
14 [82] [83]	China, Xizang Province	6.9	33.0	VII
31 [84] [85]	Chile, off the coast of Atacama Region	6.3	33.0	V
31 [86] [87]	United Kingdom, Solomon Islands	6.0	30.0	VII

August

August

Strongest magnitude	6.8 Mw   Mexico
Deadliest	6.8 Mw   Mexico 600 deaths
Total fatalities	600
Number by magnitude
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
Number by magnitude
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

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
10 [108] [109]	Soviet Union, off the coast of Primorsky Krai, Russia	6.0	532.0	II
20 [110] [111]	Philippines, Bohol Sea	6.0	560.0	I
29 [112] [113]	North Korea, off the east coast of	6.5	575.0	II

October

October

Strongest magnitude	7.0 Mw   United Kingdom
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	99
4.0–4.9	232

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
5 [114] [115]	Chile, off the coast of Valparaíso Region	6.5	14.0	VI	Foreshock.
5 [116] [117] [118]	Chile, off the coast of Valparaíso Region	6.7	33.0	VII	Some damage was caused.
6 [119]	United Kingdom, east of the South Sandwich Islands	7.0	33.0
9 [120] [121]	New Hebrides, Vanuatu	6.4	33.0	VI
18 [122] [123]	Mexico, Jalisco	6.0	45.0	V
25 [124]	Bolivia, Tarija Department	6.1	529.0

November

November

Strongest magnitude	6.4 Mw   United States
Deadliest	2 events caused 1 death each in Iran and Portugal
Total fatalities	2
Number by magnitude
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	rowspan="2"| 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	rowspan="2"| 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
Number by magnitude
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

Date	Country and location	Mw	Depth (km)	MMI	Notes	Casualties
						Dead	Injured
9 [148] [149]	New Hebrides, Vanuatu	6.8	39.0	VII
9 [150]	New Hebrides, Vanuatu	6.3	34.0		Aftershock.
19 [151] [152]	Indonesia, Sumba	6.0	58.0	V
28 [153] [154] [155]	New Hebrides, Vanuatu	7.5	26.0	VIII	Some damage was caused.
29 [156] [157] [158]	New Hebrides, Vanuatu	7.2	47.0	VIII	Aftershock. Some damage was caused.
30 [159] [160]	New Hebrides, Vanuatu	6.6	10.0	VIII	Aftershock.

References

1. "M 6.2 - North Island of New Zealand". United States Geological Survey. January 5, 1973. Retrieved July 23, 2017.
2. "M 6.2 - North Island of New Zealand". United States Geological Survey. January 5, 1973. Retrieved April 19, 2021.
3. "M 6.1 - Vanuatu". United States Geological Survey. January 6, 1973. Retrieved July 23, 2017.
4. "M 6.1 - Vanuatu". United States Geological Survey. January 6, 1973. Retrieved April 19, 2021.
5. "M 6.8 - New Britain region, Papua New Guinea". United States Geological Survey. January 18, 1973. Retrieved July 23, 2017.
6. "M 6.8 - New Britain region, Papua New Guinea". United States Geological Survey. January 18, 1973. Retrieved April 19, 2021.
7. "M 6.1 - offshore Jalisco, Mexico". United States Geological Survey. January 22, 1973. Retrieved July 23, 2017.
8. "M 7.5 - Michoacan, Mexico". United States Geological Survey. January 30, 1973. Retrieved July 23, 2017.
9. "M 7.5 - Michoacan, Mexico". United States Geological Survey. January 30, 1973. Retrieved April 19, 2021.
10. "Significant Earthquake: MEXICO: S, FARIAS, TECOMAN". National Geophysical Data Center. January 30, 1973. Retrieved April 19, 2021.
11. "M 6.1 - Jujuy, Argentina". United States Geological Survey. February 1, 1973. Retrieved July 23, 2017.
12. "M 7.4 - western Sichuan, China". United States Geological Survey. February 6, 1973. Retrieved July 23, 2017.
13. "M 7.4 - western Sichuan, China". United States Geological Survey. February 6, 1973. Retrieved April 20, 2021.
14. "Significant Earthquake: CHINA: SICHUAN PROVINCE". National Geophysical Data Center. February 6, 1973. Retrieved April 20, 2021.
15. Utsu, T. "Search Page". Catalog of Damaging Earthquakes in the World (Through 2008). Retrieved April 20, 2021.
16. "M 5.1 - North Island of New Zealand". United States Geological Survey. February 21, 1973. Retrieved July 23, 2017.
17. "M 5.1 - North Island of New Zealand". United States Geological Survey. February 21, 1973. Retrieved April 20, 2021.
18. "Significant Earthquake: NEW ZEALAND: HAWKES BAY". National Geophysical Data Center. February 21, 1973. Retrieved April 20, 2021.
19. "M 5.3 - 22km W of Malibu, CA". United States Geological Survey. February 21, 1973. Retrieved July 23, 2017.
20. "M 5.3 - 22km W of Malibu, CA". United States Geological Survey. February 21, 1973. Retrieved April 20, 2021.
21. "Significant Earthquake: CALIFORNIA: OXNARD". National Geophysical Data Center. February 21, 1973. Retrieved April 20, 2021.
22. "M 5.2 - southern Iran". United States Geological Survey. February 24, 1973. Retrieved July 23, 2017.
23. "Significant Earthquake: IRAN: KHABIS,HENGAM ISLAND". National Geophysical Data Center. February 24, 1973. Retrieved April 20, 2021.
24. "M 6.0 - Vanuatu". United States Geological Survey. February 24, 1973. Retrieved July 23, 2017.
25. "M 7.2 - Kuril Islands". United States Geological Survey. February 28, 1973. Retrieved July 23, 2017.
26. "M 7.2 - Kuril Islands". United States Geological Survey. February 28, 1973. Retrieved April 20, 2021.
27. "Significant Earthquake: RUSSIA: KURIL ISLANDS, HIROO, URAKAWA". National Geophysical Data Center. February 28, 1973. Retrieved April 20, 2021.
28. "M 6.1 - near the east coast of the Kamchatka Peninsula, Russia". United States Geological Survey. March 4, 1973. Retrieved July 23, 2017.
29. "M 5.5 - near the southeast coast of Australia". United States Geological Survey. March 9, 1973. Retrieved July 23, 2017.
30. "M 5.5 - near the southeast coast of Australia". United States Geological Survey. March 9, 1973. Retrieved May 4, 2021.
31. "Significant Earthquake: AUSTRALIA: WOLLONGONG, SYDNEY". National Geophysical Data Center. March 9, 1973. Retrieved May 4, 2021.
32. "M 6.1 - Kuril Islands". United States Geological Survey. March 12, 1973. Retrieved July 23, 2017.
33. "M 6.1 - Kuril Islands". United States Geological Survey. March 12, 1973. Retrieved May 4, 2021.
34. "M 6.0 - Vanuatu". United States Geological Survey. March 17, 1973. Retrieved July 23, 2017.
35. "M 7.0 - Luzon, Philippines". United States Geological Survey. March 17, 1973. Retrieved July 23, 2017.
36. "M 7.0 - Luzon, Philippines". United States Geological Survey. March 17, 1973. Retrieved May 4, 2021.
37. "Significant Earthquake: PHILIPPINES: QUEZON CITY: CALAUG,LOPEZ,GUIAYANGAN". National Geophysical Data Center. March 17, 1973. Retrieved May 4, 2021.
38. "M 6.5 - Molucca Sea". United States Geological Survey. March 18, 1973. Retrieved July 23, 2017.
39. "M 5.9 - Golfe de Tadjoura, Djibouti". United States Geological Survey. April 1, 1973. Retrieved July 23, 2017.
40. "M 5.9 - Golfe de Tadjoura, Djibouti". United States Geological Survey. April 1, 1973. Retrieved May 8, 2021.
41. "Significant Earthquake: ETHIOPIA: DJIBOUTI". National Geophysical Data Center. April 1, 1973. Retrieved May 8, 2021.
42. "M 6.2 - Colombia". United States Geological Survey. April 3, 1973. Retrieved July 23, 2017.
43. "M 6.2 - Colombia". United States Geological Survey. April 3, 1973. Retrieved May 8, 2021.
44. "M 6.6 - Nicobar Islands, India region". United States Geological Survey. April 7, 1973. Retrieved July 23, 2017.
45. "M 6.4 - Vanuatu". United States Geological Survey. April 8, 1973. Retrieved July 23, 2017.
46. "M 6.4 - Vanuatu". United States Geological Survey. April 8, 1973. Retrieved May 8, 2021.
47. "M 6.1 - Kuril Islands". United States Geological Survey. April 12, 1973. Retrieved July 23, 2017.
48. "M 6.5 - Costa Rica". United States Geological Survey. April 14, 1973. Retrieved July 23, 2017.
49. "M 6.5 - Costa Rica". United States Geological Survey. April 14, 1973. Retrieved May 8, 2021.
50. "Significant Earthquake: COSTA RICA: TILARAN, ARENAL, RIO CHIQUITO". National Geophysical Data Center. April 14, 1973. Retrieved May 8, 2021.
51. "M 6.4 - near the south coast of Papua, Indonesia". United States Geological Survey. April 17, 1973. Retrieved July 23, 2017.
52. "M 6.4 - near the south coast of Papua, Indonesia". United States Geological Survey. April 17, 1973. Retrieved May 8, 2021.
53. "M 6.5 - south of Panama". United States Geological Survey. April 24, 1973. Retrieved July 23, 2017.
54. "M 6.5 - south of Panama". United States Geological Survey. April 24, 1973. Retrieved May 8, 2021.
55. "Significant Earthquake: COLOMBIA; SAN CRISTOBAL, VENEZUELA". National Geophysical Data Center. April 24, 1973. Retrieved May 8, 2021.
56. "M 6.2 - Hawaii region, Hawaii". United States Geological Survey. April 26, 1973. Retrieved May 8, 2021.
57. "M 6.2 - Hawaii region, Hawaii". United States Geological Survey. April 26, 1973. Retrieved May 8, 2021.
58. "Significant Earthquake: HAWAII: HILO". National Geophysical Data Center. April 26, 1973. Retrieved May 8, 2021.
59. "M 6.0 - Unimak Island region, Alaska". United States Geological Survey. May 29, 1973. Retrieved July 24, 2017.
60. "M 6.0 - Unimak Island region, Alaska". United States Geological Survey. May 29, 1973. Retrieved May 9, 2021.
61. "M 6.1 - Vanuatu". United States Geological Survey. June 5, 1973. Retrieved July 24, 2017.
62. "M 6.1 - Vanuatu". United States Geological Survey. June 5, 1973. Retrieved May 9, 2021.
63. "M 6.3 - Solomon Islands". United States Geological Survey. June 9, 1973. Retrieved July 24, 2017.
64. "M 6.3 - Solomon Islands". United States Geological Survey. June 9, 1973. Retrieved May 9, 2021.
65. "M 7.7 - Hokkaido, Japan region". United States Geological Survey. June 17, 1973. Retrieved July 24, 2017.
66. "M 7.7 - Hokkaido, Japan region". United States Geological Survey. June 17, 1973. Retrieved May 9, 2021.
67. "Significant Earthquake: JAPAN: HOKKAIDO ISLAND". National Geophysical Data Center. June 17, 1973. Retrieved May 9, 2021.
68. "M 6.0 - off the coast of Hokkaido, Japan". United States Geological Survey. June 17, 1973. Retrieved July 24, 2017.
69. "M 7.1 - Kuril Islands". United States Geological Survey. June 24, 1973. Retrieved July 24, 2017.
70. "M 7.1 - Kuril Islands". United States Geological Survey. June 24, 1973. Retrieved May 9, 2021.
71. "Significant Earthquake: RUSSIA: KURIL ISLANDS". National Geophysical Data Center. June 24, 1973. Retrieved May 9, 2021.
72. "M 6.6 - Kuril Islands". United States Geological Survey. June 26, 1973. Retrieved July 24, 2017.
73. "M 6.6 - Kuril Islands". United States Geological Survey. June 26, 1973. Retrieved May 9, 2021.
74. "M 6.7 - off the coast of Southeastern Alaska". United States Geological Survey. July 1, 1973. Retrieved July 24, 2017.
75. "M 6.7 - off the coast of Southeastern Alaska". United States Geological Survey. July 1, 1973. Retrieved May 12, 2021.
76. "M 6.0 - Samar, Philippines". United States Geological Survey. July 3, 1973. Retrieved July 24, 2017.
77. "M 6.0 - Samar, Philippines". United States Geological Survey. July 3, 1973. Retrieved May 12, 2021.
78. "M 6.5 - Samar, Philippines". United States Geological Survey. July 3, 1973. Retrieved July 24, 2017.
79. "M 6.5 - Samar, Philippines". United States Geological Survey. July 3, 1973. Retrieved May 12, 2021.
80. "M 6.0 - Catanduanes, Philippines". United States Geological Survey. July 5, 1973. Retrieved July 24, 2017.
81. "M 6.0 - Catanduanes, Philippines". United States Geological Survey. July 5, 1973. Retrieved May 12, 2021.
82. "M 6.9 - western Xizang". United States Geological Survey. July 14, 1973. Retrieved July 24, 2017.
83. "M 6.9 - western Xizang". United States Geological Survey. July 14, 1973. Retrieved May 12, 2021.
84. "M 6.3 - offshore Atacama, Chile". United States Geological Survey. July 31, 1973. Retrieved July 24, 2017.
85. "M 6.3 - offshore Atacama, Chile". United States Geological Survey. July 31, 1973. Retrieved May 12, 2021.
86. "M 6.0 - Solomon Islands". United States Geological Survey. July 31, 1973. Retrieved July 24, 2017.
87. "M 6.0 - Solomon Islands". United States Geological Survey. July 31, 1973. Retrieved May 12, 2021.
88. "M 6.1 - Vanuatu". United States Geological Survey. August 1, 1973. Retrieved July 25, 2017.
89. "M 6.1 - Vanuatu". United States Geological Survey. August 1, 1973. Retrieved May 12, 2021.
90. "M 6.1 - Tonga". United States Geological Survey. August 5, 1973. Retrieved July 25, 2017.
91. "M 6.1 - offshore Atacama, Chile". United States Geological Survey. August 7, 1973. Retrieved July 25, 2017.
92. "M 6.1 - offshore Atacama, Chile". United States Geological Survey. August 7, 1973. Retrieved May 12, 2021.
93. "M 6.3 - offshore Atacama, Chile". United States Geological Survey. August 7, 1973. Retrieved July 25, 2017.
94. "M 6.3 - offshore Atacama, Chile". United States Geological Survey. August 7, 1973. Retrieved May 12, 2021.
95. "M 6.0 - Kuril Islands". United States Geological Survey. August 9, 1973. Retrieved July 25, 2017.
96. "M 6.0 - Kuril Islands". United States Geological Survey. August 9, 1973. Retrieved May 12, 2021.
97. "M 6.1 - Sichuan-Gansu border region, China". United States Geological Survey. August 11, 1973. Retrieved July 25, 2017.
98. "M 6.1 - Sichuan-Gansu border region, China". United States Geological Survey. August 11, 1973. Retrieved May 12, 2021.
99. "M 6.0 - near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. August 13, 1973. Retrieved July 25, 2017.
100. "M 6.0 - near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. August 13, 1973. Retrieved May 12, 2021.
101. "M 6.4 - Yunnan, China". United States Geological Survey. August 16, 1973. Retrieved July 25, 2017.
102. "M 6.4 - Yunnan, China". United States Geological Survey. August 16, 1973. Retrieved May 12, 2021.
103. "M 6.1 - Panay, Philippines". United States Geological Survey. August 18, 1973. Retrieved July 25, 2017.
104. "M 6.1 - Panay, Philippines". United States Geological Survey. August 18, 1973. Retrieved May 12, 2021.
105. "M 6.8 - Oaxaca, Mexico". United States Geological Survey. August 28, 1973. Retrieved July 25, 2017.
106. "M 6.8 - Oaxaca, Mexico". United States Geological Survey. August 28, 1973. Retrieved May 12, 2021.
107. "Significant Earthquake: MEXICO: VERACRUZ, MEXICO CITY". National Geophysical Data Center. August 28, 1973. Retrieved May 12, 2021.
108. "M 6.0 - China-Russia-North Korea border region". United States Geological Survey. September 10, 1973. Retrieved July 25, 2017.
109. "M 6.0 - China-Russia-North Korea border region". United States Geological Survey. September 10, 1973. Retrieved May 15, 2021.
110. "M 6.0 - Negros - Cebu region, Philippines". United States Geological Survey. September 20, 1973. Retrieved July 25, 2017.
111. "M 6.0 - Negros - Cebu region, Philippines". United States Geological Survey. September 20, 1973. Retrieved May 15, 2021.
112. "M 6.5 - North Korea". United States Geological Survey. September 29, 1973. Retrieved July 25, 2017.
113. "M 6.5 - North Korea". United States Geological Survey. September 29, 1973. Retrieved May 15, 2021.
114. "M 6.5 - offshore Valparaíso, Chile". United States Geological Survey. October 5, 1973. Retrieved July 26, 2017.
115. "M 6.5 - offshore Valparaiso, Chile". United States Geological Survey. October 5, 1973. Retrieved May 15, 2021.
116. "M 6.7 - offshore Valparaíso, Chile". United States Geological Survey. October 5, 1973. Retrieved July 26, 2017.
117. "M 6.7 - offshore Valparaiso, Chile". United States Geological Survey. October 5, 1973. Retrieved May 15, 2021.
118. "Significant Earthquake: CHILE: VALPARAISO, LA LIGUA, SANTIAGO". National Geophysical Data Center. October 5, 1973. Retrieved May 15, 2021.
119. "M 7.0 - east of the South Sandwich Islands". United States Geological Survey. October 6, 1973. Retrieved July 26, 2017.
120. "M 6.4 - Vanuatu". United States Geological Survey. October 9, 1973. Retrieved July 26, 2017.
121. "M 6.4 - Vanuatu". United States Geological Survey. October 9, 1973. Retrieved May 15, 2021.
122. "M 6.0 - Jalisco, Mexico". United States Geological Survey. October 18, 1973. Retrieved July 26, 2017.
123. "M 6.0 - Jalisco, Mexico". United States Geological Survey. October 18, 1973. Retrieved May 15, 2021.
124. "M 6.1 - Tarija, Bolivia". United States Geological Survey. October 25, 1973. Retrieved July 26, 2017.
125. "M 5.8 - Greece". United States Geological Survey. November 4, 1973. Retrieved July 26, 2017.
126. "M 5.8 - Greece". United States Geological Survey. November 4, 1973. Retrieved May 15, 2021.
127. "Significant Earthquake: GREECE: LEUKAS ISLAND, PREVEZA, VONITSA". National Geophysical Data Center. November 4, 1973. Retrieved May 15, 2021.
128. "M 6.4 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 6, 1973. Retrieved July 26, 2017.
129. "M 6.4 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 6, 1973. Retrieved May 15, 2021.
130. "M 6.3 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 6, 1973. Retrieved July 26, 2017.
131. "M 6.3 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. November 6, 1973. Retrieved May 15, 2021.
132. "M 6.1 - Kuril Islands". United States Geological Survey. November 8, 1973. Retrieved July 26, 2017.
133. "M 6.1 - Kuril Islands". United States Geological Survey. November 8, 1973. Retrieved May 15, 2021.
134. "M 6.0 - Kuril Islands". United States Geological Survey. November 11, 1973. Retrieved July 26, 2017.
135. "M 5.5 - central Iran". United States Geological Survey. November 11, 1973. Retrieved July 26, 2017.
136. "M 5.5 - central Iran". United States Geological Survey. November 11, 1973. Retrieved May 15, 2021.
137. "Significant Earthquake: IRAN: QESHLAGH,DEH BID". National Geophysical Data Center. November 11, 1973. Retrieved May 15, 2021.
138. "M 6.1 - near the east coast of Honshu, Japan". United States Geological Survey. November 19, 1973. Retrieved July 26, 2017.
139. "M 6.1 - near the east coast of Honshu, Japan". United States Geological Survey. November 19, 1973. Retrieved May 15, 2021.
140. "M 5.1 - Azores Islands, Portugal". United States Geological Survey. November 23, 1973. Retrieved July 26, 2017.
141. "M 5.1 - Azores Islands, Portugal". United States Geological Survey. November 23, 1973. Retrieved May 15, 2021.
142. "Significant Earthquake: AZORES: PICO, FAIAL, TERCEIRA". National Geophysical Data Center. November 23, 1973. Retrieved May 15, 2021.
143. "M 5.7 - Crete, Greece". United States Geological Survey. November 29, 1973. Retrieved July 26, 2017.
144. "M 5.7 - Crete, Greece". United States Geological Survey. November 29, 1973. Retrieved May 15, 2021.
145. "Significant Earthquake: GREECE: CRETE, PALAEOCHORA, CHANIA". National Geophysical Data Center. November 29, 1973. Retrieved May 15, 2021.
146. "M 6.0 - Vanuatu". United States Geological Survey. November 30, 1973. Retrieved July 26, 2017.
147. "M 6.0 - Vanuatu". United States Geological Survey. November 30, 1973. Retrieved May 15, 2021.
148. "M 6.8 - Vanuatu". United States Geological Survey. December 9, 1973. Retrieved July 26, 2017.
149. "M 6.8 - Vanuatu". United States Geological Survey. December 9, 1973. Retrieved May 16, 2021.
150. "M 6.3 - Vanuatu". United States Geological Survey. December 9, 1973. Retrieved July 26, 2017.
151. "M 6.0 - Sumba region, Indonesia". United States Geological Survey. December 19, 1973. Retrieved July 26, 2017.
152. "M 6.0 - Sumba region, Indonesia". United States Geological Survey. December 19, 1973. Retrieved May 16, 2021.
153. "M 7.5 - Vanuatu". United States Geological Survey. December 28, 1973. Retrieved July 26, 2017.
154. "M 7.5 - Vanuatu". United States Geological Survey. December 28, 1973. Retrieved May 16, 2021.
155. "Significant Earthquake: VANUATU ISLANDS: ESPIRITU SANTO, LUGANILLE". National Geophysical Data Center. December 28, 1973. Retrieved May 16, 2021.
156. "M 7.2 - Vanuatu". United States Geological Survey. December 29, 1973. Retrieved July 26, 2017.
157. "M 7.2 - Vanuatu". United States Geological Survey. December 29, 1973. Retrieved May 16, 2021.
158. "Significant Earthquake: VANUATU ISLANDS: LUGANVILLE, LAMAP". National Geophysical Data Center. December 29, 1973. Retrieved May 16, 2021.
159. "M 6.6 - Vanuatu". United States Geological Survey. December 30, 1973. Retrieved July 26, 2017.
160. "M 6.6 - Vanuatu". United States Geological Survey. December 30, 1973. Retrieved May 16, 2021.