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List of earthquakes in 1968

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Earthquakes in 1968
List of earthquakes in 1968 is located in Earth
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
List of earthquakes in 1968
class=notpageimage|
Approximate epicenters of the earthquakes in 1968
Strongest magnitude Japan, off the east coast of Honshu (Magnitude 8.2) May 16
Deadliest Iran, South Khorasan Province (Magnitude 7.1) August 31 10,488 deaths
Total fatalities12,081
Number by magnitude
9.0+0
← 1967
1969 →

This is a list of earthquakes in 1968. 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. There was a large resurgence in activity in 1968. 22 magnitude 7.0+ earthquakes struck various parts of the planet. The largest of these was a magnitude 8.2 event in Japan in May. Large aftershocks struck the area following the mainshock. New Zealand and Indonesia had some upheaval during the year. The high activity contributed to over 12,000 deaths across the world. The vast majority of this total was caused by a destructive event in Iran in August with nearly 10,500 deaths. Events in the Philippines, Italy and Indonesia also had significant fatalities.

Overall

[edit]

By death toll

[edit]
Rank Death toll Magnitude Location MMI Depth (km) Date
1 10,488 7.1  Iran, South Khorasan Province IX (Violent) 10.0 August 31
2 700 6.2  Iran, Razavi Khorasan Province VIII (Severe) 15.0 September 1
3 270 7.6  Philippines, Luzon IX (Violent) 25.0 August 1
4 216 6.4 Italy, Sicily X (Extreme) 10.0 January 15
5 200 7.2  Indonesia, Minahassa Peninsula IX (Violent) 20.0 August 14
6 52 8.2  Japan, off the east coast of Honshu VIII (Severe) 29.9 May 16
7 38 5.3  Iran, West Azerbaijan Province VII (Very strong) 34.0 April 29
8 24 6.3  Turkey, offshore Bartin Province VII (Very strong) 20.0 September 3
= 9 20 7.2  Greece, Aegean Sea X (Extreme) 15.0 February 19
= 9 20 6.0  Mexico, Chiapas IV (Light) 124.8 September 25
10 18 7.3  Mexico, Oaxaca VIII (Severe) 25.0 August 2
11 15 6.8  Peru, Loreto Region VII (Very strong) 15.0 June 19
  • Note: At least 10 casualties

By magnitude

[edit]
Rank Magnitude Death toll Location MMI Depth (km) Date
1 8.2 52  Japan, off the east coast of Honshu VIII (Severe) 29.9 May 16
2 7.9 0  Japan, off the northeast coast of Honshu VII (Very strong) 25.0 May 16
= 3 7.6 270  Philippines, Luzon IX (Violent) 25.0 August 1
= 3 7.6 0  Indonesia, Molucca Sea IX (Violent) 23.0 August 10
= 4 7.5 1  Japan, off the east coast of Kyushu VIII (Severe) 34.2 April 1
= 4 7.5 0  Indonesia, Papua (province) VIII (Severe) 45.0 May 28
5 7.4 0  Soviet Union, Kuril Islands, Russia VII (Very strong) 36.9 January 29
= 6 7.3 0  Australia, southeast of New Ireland (island), Papua and New Guinea VIII (Severe) 30.0 February 12
= 6 7.3 0  New Zealand, Kermadec Islands VI (Strong) 45.0 July 25
= 6 7.3 18  Mexico, Oaxaca VIII (Severe) 25.0 August 2
= 6 7.3 0  United Kingdom, Solomon Islands ( ) 543.1 August 18
= 6 7.3 0  Japan, Bonin Islands ( ) 500.0 October 7
= 7 7.2 20  Greece, Aegean Sea X (Extreme) 15.0 February 19
= 7 7.2 3  New Zealand, South Island IX (Violent) 20.0 May 24
= 7 7.2 200  Indonesia, Minahassa Peninsula IX (Violent) 20.0 August 14
= 8 7.1 0  Taiwan, off the east coast of VII (Very strong) 25.0 February 26
= 8 7.1 10,488  Iran, South Khorasan Province X (Extreme) 10.0 August 31
= 8 7.1 0  New Zealand, Kermadec Islands ( ) 50.0 September 26
= 9 7.0 0  New Zealand, Kermadec Islands ( ) 55.0 May 20
= 9 7.0 0  Soviet Union, Kuril Islands, Russia ( ) 28.3 May 20
= 9 7.0 0  Japan, off the east coast of Honshu VI (Strong) 32.1 June 12
= 9 7.0 0  Australia, off the north coast of mainland Papua and New Guinea VIII (Severe) 15.0 October 23
  • Note: At least 7.0 magnitude

Notable events

[edit]

January

[edit]
January
Strongest magnitude7.4 Mw  Soviet Union, Russia
Deadliest6.4 Mw Italy
216 deaths
Total fatalities224
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.96
5.0–5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
4[1]  Nicaragua, Managua 4.6 5.0 Despite being a moderate magnitude there was some property damage. Costs were $2 million (1968 rate).
6[2][3]  Chile, Atacama Region 6.4 30.0 VI
13[4][5]  Taiwan, off the east coast 6.1 35.0 IV
15[6][7][8] Italy, Sicily 6.4 10.0 X 216 people were killed and 563 were injured in the 1968 Belice earthquake. Extensive destruction was caused in the area with costs reported at $320 million (1968 rate). 216 563
19[9][10]  United Kingdom, Solomon Islands 6.7 27.5 V
25[11] Italy, Sicily 5.1 33.0 8 people were killed and 55 more were injured. Some damage was reported. Aftershock. 8 55
26[12][13]  Indonesia, Flores 6.8 30.6 VI
29[14][15]  Soviet Union, Kuril Islands, Russia 7.4 36.9 VII
29[16]  Soviet Union, Kuril Islands, Russia 6.1 33.0 Aftershock.

February

[edit]
February
Strongest magnitude7.3 Mw  Australia, Papua and New Guinea
Deadliest7.2 Mw  Greece
20 deaths
Total fatalities24
Number by magnitude
8.0–8.90
7.0–7.93
6.0–6.92
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
4[17]  Soviet Union, Kuril Islands, Russia 6.6 23.5 Aftershock.
12[18][19][20]  Australia, southeast of New Ireland (island), Papua and New Guinea 7.3 30.0 VIII Some damage was reported.
19[21][22][23]  Greece, Aegean Sea 7.2 15.0 X The 1968 Aegean Sea earthquake killed 20 people and injured 18 more. 500 homes were destroyed and 1,951 were damaged. Costs were $600,000 (1968 rate). 20 18
21[24][25][26]  Japan, Miyazaki Prefecture, Kyushu 6.2 10.0 VII During the 1968 Ebino earthquake, 3 people were killed and some damage was reported. 3
25[27]  Algeria, Bordj Bou Arreridj Province 4.9 0.0 VIII 1 person was killed and 4 were hurt. 100 homes collapsed. 1 4
26[28][29]  Taiwan, off the east coast of 7.1 25.0 VII

March

[edit]
March
Strongest magnitude6.4 Mw  Tonga
Deadliest4.6 Mw  Kenya
1 death
Total fatalities1
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.94
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
5[30][31]  Philippines, off the east coast of Mindanao 6.3 35.0 V
5[32][33]  Philippines, off the east coast of Mindanao 6.1 35.0 V Aftershock.
7[34][35]  Australia, East New Britain Province, Papua and New Guinea 6.3 45.0 V
11[36]  Tonga 6.4 109.1
20[37]  Kenya, Homa Bay County 4.6 33.0 1 person was killed and another was injured. Some property damage was caused. 1 1

April

[edit]
April
Strongest magnitude7.5 Mw  Japan
Deadliest5.3 Mw  Iran
38 deaths
Total fatalities39
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.94
5.0–5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
1[38][39][40][41]  Japan, off the east coast of Kyushu 7.5 34.2 VIII 1 person was killed and 22 were injured in the 1968 Hyuga-nada earthquake. Some homes were destroyed in both the earthquake and a subsequent tsunami. 1 22
1[42][43]  Japan, off the east coast of Kyushu 6.8 30.0 VI Aftershock.
9[44][45]  United States, southern California 6.6 10.0 IX Some damage was caused by the 1968 Borrego Mountain earthquake.
26[46]  Western Samoa 6.2 30.0
26[47][48]  Mexico, Michoacan 6.1 30.0 VI
29[49]  Iran, West Azerbaijan Province 5.3 34.0 VII 38 people were killed and 100 were injured. 1,000 homes were destroyed. Damage costs were $1 million (1968 rate). 38 100

May

[edit]
May
Strongest magnitude8.2 Mw  Japan
Deadliest8.2 Mw  Japan
52 deaths
Total fatalities55
Number by magnitude
8.0–8.91
7.0–7.95
6.0–6.96
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
14[50][51]  Japan, Ryukyu Islands 6.7 160.1 V
16[52][53][54][55]  Japan, off the east coast of Honshu 8.2 29.9 VIII 52 people were killed and 330 were injured in the 1968 Tokachi earthquake. A tsunami was generated which contributed to the destruction. 1,218 homes were destroyed. Damage costs were $131 million (1968 rate). A large number of aftershocks followed. To prevent cluttering only those measuring above magnitude 6.5 will be listed. 52 330
16[56][57]  Japan, off the northeast coast of Honshu 7.9 25.0 VII Aftershock.
16[58]  Japan, off the east coast of Honshu 6.5 25.0 Aftershock.
16[59]  Japan, off the east coast of Honshu 6.5 43.0 Aftershock.
19[60]  Japan, off the east coast of Honshu 6.3 20.0 South of the aftershock sequence from May 16 event.
20[61]  New Zealand, Kermadec Islands 7.0 55.0 Doublet earthquake.
20[62]  New Zealand, Kermadec Islands 6.9 50.0
20[63]  Soviet Union, Kuril Islands, Russia 7.0 28.3
23[64][65][66]  New Zealand, South Island 7.2 20.0 IX The 1968 Inangahua earthquake caused 3 deaths and $3 million (1968 rate) worth of damage. 3
24[67]  Japan, off the east coast of Honshu 6.6 27.6 Aftershock.
28[68][69]  Indonesia, Papua (province) 7.5 45.0 VIII

June

[edit]
June
Strongest magnitude7.0 Mw  Japan
Deadliest6.8 Mw  Peru
15 deaths
Total fatalities15
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.93
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
7[70][71]  Indonesia, Central Sulawesi 6.7 35.0 VII
7[72][73]  Indonesia, South Sulawesi 6.2 38.0 VI Aftershock.
12[74][75]  Japan, off the east coast of Honshu 7.0 32.1 VI Aftershock of May 16 event.
19[76][77][78]  Peru, Loreto Region 6.8 15.0 VII 15 people were killed and some property damage was caused. Costs were $100,000 (1968 rate). 15

July

[edit]
July
Strongest magnitude7.3 Mw  New Zealand
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.96
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
1[79][80]  Japan, Saitama Prefecture, Honshu 6.1 60.6 VI
2[81][82]  Mexico, Guerrero 6.4 57.9 VI
2[83][84]  Indonesia, Papua (province) 6.0 45.0 V
5[85][86]  Japan, off the east coast of Honshu 6.3 47.0 IV
25[87][88][89]  New Zealand, Kermadec Islands 7.3 45.0 VI Some damage was caused.
29[90][91]  Indonesia, West Papua (province) 6.2 20.0 V
30[92][93]  Peru, off the north coast of 6.5 31.8 VI

August

[edit]
August
Strongest magnitude7.6 Mw 2 events
Deadliest7.1 Mw  Iran
10,488 deaths
Total fatalities10,976
Number by magnitude
8.0–8.90
7.0–7.96
6.0–6.99
5.0–5.90
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
1[94][95][96][97]  Philippines, Luzon 7.6 25.0 IX The 1968 Casiguran earthquake caused 270 deaths and 261 injuries. Some homes were destroyed and many were damaged. Costs were around $8 million (1968 rate). A tsunami was generated which left 1 person dead. 270 261
2[98][99][100]  Mexico, Oaxaca 7.3 25.0 VIII 18 people were killed. Property damage was $2.4 million (1968 rate). 18
3[101][102]  Japan, Ryukyu Islands 6.7 15.0 VI
3[103][104]  Philippines, Luzon 6.4 25.0 VI Aftershock.
4[105][106]  Philippines, off the east coast of Mindanao 6.1 100.0 IV
5[107][108]  Japan, off the west coast of Shikoku 6.8 45.7 VII
10[109][110][111]  Indonesia, Molucca Sea 7.6 23.0 IX Some damage was caused.
10[112]  Indonesia, Molucca Sea 6.5 25.0 Aftershock.
14[113][114]  Mexico, offshore Michoacan 6.0 20.0 VI
14[115][116][117]  Indonesia, Minahassa Peninsula 7.2 20.0 IX 200 people were killed and 58 were injured in a tsunami triggered by the 1968 Sulawesi earthquake. 800 homes were destroyed. 200 58
18[118][119]  United Kingdom, Solomon Islands 7.3 543.1 III
21[120]  New Zealand, Kermadec Islands 6.5 15.0
23[121]  Bolivia, Tarija Department 6.3 533.6
28[122][123]  Philippines, off the east coast of Luzon 6.4 20.0 V Aftershock.
31[124][125][126]  Iran, South Khorasan Province 7.1 10.0 X The 1968 Dasht-e Bayaz and Ferdows earthquakes caused major destruction in northeast Iran. 10,488 people were killed and over 17,000 were injured. 12,000 homes were destroyed. $35 million (1968 rate) of costs were reported. 10,488 17,000

September

[edit]
September
Strongest magnitude7.1 Mw  New Zealand
Deadliest6.2 Mw  Iran
700 deaths
Total fatalities747
Number by magnitude
8.0–8.90
7.0–7.91
6.0–6.913
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
1[127][128][129]  Iran, Razavi Khorasan Province 6.2 15.0 VIII This was a strong aftershock of the 1968 Dasht-e Bayaz and Ferdows earthquakes. 700 additional deaths were caused and 1,500 homes were destroyed. 700
3[130][131][132]  Turkey, offshore Bartin Province 6.3 20.0 VIII 24 people were killed and 200 were injured. 2,000 homes damaged or destroyed. 24 200
8[133][134]  Australia, East Sepik Province, Papua and New Guinea 6.3 30.0 VI
9[135][136]  Peru, Ucayali Region 6.1 142.3 IV
14[137][138]  Iran, Fars Province 6.2 25.0 VII
16[139][140]  Australia, off the south coast of New Britain, Papua and New Guinea 6.8 35.0 VII
16[141][142]  Australia, off the south coast of New Britain, Papua and New Guinea 6.1 65.0 V Aftershock.
20[143][144][145]  Venezuela, Sucre, Venezuela 6.5 103.4 IX 3 people were killed and some damage was caused. 3
21[146][147]  Japan, off the south coast of Hokkaido 6.7 58.3 VI
25[148]  New Zealand, off the south coast of South Island 6.2 15.0
25[149][150][151]  Mexico, Chiapas 6.0 124.8 IV 20 people were killed and some damage was caused. 20
26[152]  New Zealand, Kermadec Islands 7.1 50.0
27[153][154]  Australia, East Sepik Province, Papua and New Guinea 6.4 15.0 VIII
28[155][156]  Peru, Lima Region 6.1 65.0 V

October

[edit]
October
Strongest magnitude7.3 Mw  Japan
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.92
6.0–6.96
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
7[157]  Japan, Bonin Islands 7.3 500.0
7[158][159]  Japan, off the south coast of Hokkaido 6.5 35.0 VI
10[160][161]  Australia, off the south coast of New Britain, Papua and New Guinea 6.1 48.9 V
14[162][163][164]  Australia, Western Australia 6.5 15.0 IX The 1968 Meckering earthquake caused property damage with costs reaching $2.2 million (1968 rate).
20[165][166]  Taiwan, off the east coast of 6.2 22.5 V
23[167][168][169]  Australia, off the coast of East Sepik Province, Papua and New Guinea 7.0 15.0 VIII Some damage was caused.
24[170]  Philippines, southeast of Mindanao 6.3 45.0
29[171][172]  United States, northern Alaska 6.7 10.0 VIII

November

[edit]
November
Strongest magnitude6.5 Mw  New Hebrides, Vanuatu
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.93
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
4[173]  New Hebrides, Vanuatu 6.5 597.0
17[174]  Venezuela, Zulia 6.1 175.7
22[175][176]  Philippines, Luzon 6.1 35.0 V

December

[edit]
December
Strongest magnitude6.6 Mw  Australia, Papua and New Guinea
Total fatalities0
Number by magnitude
8.0–8.90
7.0–7.90
6.0–6.95
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured
5[177][178]  Greece, Dodecanese Islands 6.1 20.0 VI
5[179][180]  Iceland, Southern Peninsula (Iceland) 6.0 10.0 VIII
7[181]  Australia, Bismarck Sea, Papua and New Guinea 6.6 15.0
17[182][183]  United States, southern Alaska 6.3 109.6 V
19[184][185]  Soviet Union, eastern Kamchatka, Russia 6.0 44.1 V

References

[edit]
  1. ^ "Significant Earthquake: NICARAGUA: MANAGUA". National Geophysical Data Center. January 4, 1968. Archived from the original on January 23, 2022. Retrieved February 25, 2021.
  2. ^ "M 6.4 – Atacama, Chile". United States Geological Survey. January 6, 1968. Archived from the original on May 2, 2024. Retrieved May 12, 2017.
  3. ^ "M 6.4 – Atacama, Chile". United States Geological Survey. January 6, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  4. ^ "M 6.1 – Taiwan region". United States Geological Survey. January 13, 1968. Archived from the original on May 2, 2024. Retrieved May 12, 2017.
  5. ^ "M 6.1 – Taiwan region". United States Geological Survey. January 13, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  6. ^ "M 6.4 – Sicily, Italy". United States Geological Survey. January 15, 1968. Archived from the original on May 2, 2024. Retrieved May 12, 2017.
  7. ^ "M 6.4 – Sicily, Italy". United States Geological Survey. January 15, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  8. ^ "Significant Earthquake: ITALY: SICILY". National Geophysical Data Center. January 15, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  9. ^ "M 6.7 – Solomon Islands". United States Geological Survey. January 19, 1968. Archived from the original on May 2, 2024. Retrieved May 12, 2017.
  10. ^ "M 6.7 – Solomon Islands". United States Geological Survey. January 19, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  11. ^ "Significant Earthquake: ITALY: SICILY". National Geophysical Data Center. January 25, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  12. ^ "M 6.8 – Flores region, Indonesia". United States Geological Survey. January 26, 1968. Archived from the original on May 2, 2024. Retrieved May 12, 2017.
  13. ^ "M 6.8 – Flores region, Indonesia". United States Geological Survey. January 26, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  14. ^ "M 7.4 – Kuril Islands". United States Geological Survey. January 29, 1968. Archived from the original on May 2, 2024. Retrieved May 13, 2017.
  15. ^ "M 7.4 – Kuril Islands". United States Geological Survey. January 29, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  16. ^ "M 6.1 – Kuril Islands". United States Geological Survey. January 29, 1968. Archived from the original on May 2, 2024. Retrieved May 13, 2017.
  17. ^ "M 6.6 – Kuril Islands". United States Geological Survey. February 4, 1968. Retrieved May 13, 2017.
  18. ^ "M 7.3 – New Ireland region, Papua New Guinea". United States Geological Survey. February 12, 1968. Retrieved May 13, 2017.
  19. ^ "M 7.3 – New Ireland region, Papua New Guinea". United States Geological Survey. February 12, 1968. Retrieved February 25, 2021.
  20. ^ "Significant Earthquake: PAPUA NEW GUINEA: NEW IRELAND". National Geophysical Data Center. February 12, 1968. Retrieved February 25, 2021.
  21. ^ "M 7.2 – Aegean Sea". United States Geological Survey. February 19, 1968. Archived from the original on May 6, 2021. Retrieved May 13, 2017.
  22. ^ "M 7.2 – Aegean Sea". United States Geological Survey. February 19, 1968. Retrieved February 25, 2021.
  23. ^ "Significant Earthquake: GREECE: AEGEAN SEA: ST EUSTRATIOS". National Geophysical Data Center. February 19, 1968. Archived from the original on February 14, 2021. Retrieved February 25, 2021.
  24. ^ "M 6.2 – Kyushu, Japan". United States Geological Survey. February 21, 1968. Retrieved May 13, 2017.
  25. ^ "M 6.2 – Kyushu, Japan". United States Geological Survey. February 21, 1968. Archived from the original on June 16, 2021. Retrieved February 25, 2021.
  26. ^ "Significant Earthquake: JAPAN: KYUSHU". National Geophysical Data Center. February 21, 1968. Archived from the original on June 24, 2021. Retrieved February 25, 2021.
  27. ^ "Significant Earthquake: ALGERIA: EL ALEN (BABORD)". National Geophysical Data Center. February 25, 1968. Retrieved February 25, 2021.
  28. ^ "M 7.1 – Taiwan region". United States Geological Survey. February 26, 1968. Retrieved May 13, 2017.
  29. ^ "M 7.1 – Taiwan region". United States Geological Survey. February 26, 1968. Retrieved February 25, 2021.
  30. ^ "M 6.3 – Mindanao, Philippines". United States Geological Survey. March 5, 1968. Retrieved May 13, 2017.
  31. ^ "M 6.3 – Mindanao, Philippines". United States Geological Survey. March 5, 1968. Retrieved February 25, 2021.
  32. ^ "M 6.1 – Mindanao, Philippines". United States Geological Survey. March 5, 1968. Retrieved May 13, 2017.
  33. ^ "M 6.1 – Mindanao, Philippines". United States Geological Survey. March 5, 1968. Retrieved February 25, 2021.
  34. ^ "M 6.3 – New Britain region, Papua New Guinea". United States Geological Survey. March 7, 1968. Archived from the original on May 2, 2024. Retrieved May 13, 2017.
  35. ^ "M 6.3 – New Britain region, Papua New Guinea". United States Geological Survey. March 7, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  36. ^ "M 6.4 – Tonga". United States Geological Survey. March 11, 1968. Archived from the original on May 2, 2024. Retrieved May 13, 2017.
  37. ^ "Significant Earthquake: KENYA: HOMA BAY, USIRI, GOT KOKECH". National Geophysical Data Center. March 20, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  38. ^ "M 7.5 – Shikoku, Japan". United States Geological Survey. April 1, 1968. Archived from the original on May 2, 2024. Retrieved May 18, 2017.
  39. ^ "M 7.5 – Shikoku, Japan". United States Geological Survey. April 1, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  40. ^ "Significant Earthquake: JAPAN: KYUSHU, SHIKOKU". National Geophysical Data Center. April 1, 1968. Archived from the original on July 27, 2022. Retrieved February 25, 2021.
  41. ^ "Tsunami Event: SEIKAIDO". National Geophysical Data Center. April 1, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  42. ^ "M 6.8 – Shikoku, Japan". United States Geological Survey. April 1, 1968. Retrieved May 18, 2017.
  43. ^ "M 6.8 – Shikoku, Japan". United States Geological Survey. April 1, 1968. Retrieved February 25, 2021.
  44. ^ "M 6.6 – 5 km NNE of Ocotillo Wells, CA". United States Geological Survey. April 9, 1968. Archived from the original on May 2, 2024. Retrieved May 18, 2017.
  45. ^ "M 6.6 – 5 km NNE of Ocotillo Wells, CA". United States Geological Survey. April 9, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  46. ^ "M 6.2 – Samoa Islands region". United States Geological Survey. April 26, 1968. Archived from the original on May 2, 2024. Retrieved May 18, 2017.
  47. ^ "M 6.1 – Michoacan, Mexico". United States Geological Survey. April 26, 1968. Archived from the original on May 2, 2024. Retrieved May 18, 2017.
  48. ^ "M 6.1 – Michoacan, Mexico". United States Geological Survey. April 26, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  49. ^ "Significant Earthquake: IRAN: MAKU,SHAH BANDALU,QURTA BOLAGH,QONDEQLI". National Geophysical Data Center. April 29, 1968. Archived from the original on May 2, 2024. Retrieved February 25, 2021.
  50. ^ "M 6.7 – Ryukyu Islands, Japan". United States Geological Survey. May 14, 1968. Archived from the original on May 2, 2024. Retrieved May 18, 2017.
  51. ^ "M 6.7 – Ryukyu Islands, Japan". United States Geological Survey. May 14, 1968. Retrieved February 25, 2021.
  52. ^ "M 8.2 – off the east coast of Honshu, Japan". United States Geological Survey. May 16, 1968. Archived from the original on July 14, 2021. Retrieved May 18, 2017.
  53. ^ "M 8.2 – off the east coast of Honshu, Japan". United States Geological Survey. May 16, 1968. Retrieved February 25, 2021.
  54. ^ "Significant Earthquake: JAPAN: OFF EAST COAST OF HONSHU ISLAND". National Geophysical Data Center. May 16, 1968. Archived from the original on August 27, 2023. Retrieved February 25, 2021.
  55. ^ "Tsunami Event: OFF EAST COAST OF HONSHU ISLAND". National Geophysical Data Center. May 16, 1968. Archived from the original on April 15, 2024. Retrieved February 25, 2021.
  56. ^ "M 7.9 – Hokkaido, Japan region". United States Geological Survey. May 16, 1968. Retrieved May 18, 2017.
  57. ^ "M 7.9 – Hokkaido, Japan region". United States Geological Survey. May 16, 1968. Retrieved February 25, 2021.
  58. ^ "M 6.5 – off the east coast of Honshu, Japan". United States Geological Survey. May 16, 1968. Retrieved May 18, 2017.
  59. ^ "M 6.5 – off the east coast of Honshu, Japan". United States Geological Survey. May 16, 1968. Archived from the original on May 2, 2024. Retrieved May 19, 2017.
  60. ^ "M 6.3 – near the east coast of Honshu, Japan". United States Geological Survey. May 19, 1968. Archived from the original on May 2, 2024. Retrieved May 19, 2017.
  61. ^ "M 7.0 – Kermadec Islands, New Zealand". United States Geological Survey. May 20, 1968. Archived from the original on May 2, 2024. Retrieved May 19, 2017.
  62. ^ "M 6.9 – Kermadec Islands, New Zealand". United States Geological Survey. May 20, 1968. Archived from the original on May 2, 2024. Retrieved May 19, 2017.
  63. ^ "M 7.0 – east of the Kuril Islands". United States Geological Survey. May 20, 1968. Archived from the original on May 2, 2024. Retrieved May 19, 2017.
  64. ^ "M 7.2 – South Island of New Zealand". United States Geological Survey. May 23, 1968. Archived from the original on May 22, 2022. Retrieved May 20, 2017.
  65. ^ "M 7.2 – South Island of New Zealand". United States Geological Survey. May 23, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  66. ^ "Significant Earthquake: NEW ZEALAND: SOUTH ISLAND: NW COAST". National Geophysical Data Center. May 23, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  67. ^ "M 6.6 – off the east coast of Honshu, Japan". United States Geological Survey. May 24, 1968. Retrieved May 20, 2017.
  68. ^ "M 7.5 – near the north coast of Papua, Indonesia". United States Geological Survey. May 28, 1968. Retrieved May 20, 2017.
  69. ^ "M 7.5 – near the north coast of Papua, Indonesia". United States Geological Survey. May 28, 1968. Retrieved February 26, 2021.
  70. ^ "M 6.7 – Sulawesi, Indonesia". United States Geological Survey. June 7, 1968. Retrieved May 20, 2017.
  71. ^ "M 6.7 – Sulawesi, Indonesia". United States Geological Survey. June 7, 1968. Retrieved February 26, 2021.
  72. ^ "M 6.2 – Sulawesi, Indonesia". United States Geological Survey. June 7, 1968. Archived from the original on May 2, 2024. Retrieved May 20, 2017.
  73. ^ "M 6.2 – Sulawesi, Indonesia". United States Geological Survey. June 7, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  74. ^ "M 7.0 – off the east coast of Honshu, Japan". United States Geological Survey. June 12, 1968. Archived from the original on May 2, 2024. Retrieved May 20, 2017.
  75. ^ "M 7.0 – off the east coast of Honshu, Japan". United States Geological Survey. June 12, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  76. ^ "M 6.8 – northern Peru". United States Geological Survey. June 19, 1968. Archived from the original on June 18, 2022. Retrieved May 20, 2017.
  77. ^ "M 6.8 – northern Peru". United States Geological Survey. June 19, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  78. ^ "Significant Earthquake: PERU: SAN MARTIN,MOYOBAMBA,YANTALO,RIOJA,LAMAS". National Geophysical Data Center. June 19, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  79. ^ "M 6.1 – near the south coast of Honshu, Japan". United States Geological Survey. July 1, 1968. Archived from the original on May 2, 2024. Retrieved May 20, 2017.
  80. ^ "M 6.1 – near the south coast of Honshu, Japan". United States Geological Survey. July 1, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  81. ^ "M 6.4 – Guerrero, Mexico". United States Geological Survey. July 2, 1968. Archived from the original on May 2, 2024. Retrieved May 20, 2017.
  82. ^ "M 6.4 – Guerrero, Mexico". United States Geological Survey. July 2, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  83. ^ "M 6.0 – Papua, Indonesia". United States Geological Survey. July 2, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  84. ^ "M 6.0 – Papua, Indonesia". United States Geological Survey. July 2, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  85. ^ "M 6.3 – near the east coast of Honshu, Japan". United States Geological Survey. July 5, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  86. ^ "M 6.3 – near the east coast of Honshu, Japan". United States Geological Survey. July 5, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  87. ^ "M 7.3 – Kermadec Islands, New Zealand". United States Geological Survey. July 25, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  88. ^ "M 7.3 – Kermadec Islands, New Zealand". United States Geological Survey. July 25, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  89. ^ "Significant Earthquake: KERMADEC ISLANDS: S OF, RAOUL". National Geophysical Data Center. July 25, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  90. ^ "M 6.2 – near the north coast of Papua, Indonesia". United States Geological Survey. July 29, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  91. ^ "M 6.2 – near the north coast of Papua, Indonesia". United States Geological Survey. July 29, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  92. ^ "M 6.5 – near the coast of northern Peru". United States Geological Survey. July 30, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  93. ^ "M 6.5 – near the coast of northern Peru". United States Geological Survey. July 30, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  94. ^ "M 7.6 – Luzon, Philippines". United States Geological Survey. August 1, 1968. Retrieved May 21, 2017.
  95. ^ "M 7.6 – Luzon, Philippines". United States Geological Survey. August 1, 1968. Retrieved February 26, 2021.
  96. ^ "Significant Earthquake: PHILIPPINES: LUZON: MANILA". National Geophysical Data Center. August 1, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  97. ^ "Tsunami Event: E. LUZON ISLAND". National Geophysical Data Center. August 1, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  98. ^ "M 7.3 – Oaxaca, Mexico". United States Geological Survey. August 2, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  99. ^ "M 7.3 – Oaxaca, Mexico". United States Geological Survey. August 2, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  100. ^ "Significant Earthquake: MEXICO: OAXACA, GUERRERO". National Geophysical Data Center. August 2, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  101. ^ "M 6.7 – Ryukyu Islands, Japan". United States Geological Survey. August 3, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  102. ^ "M 6.7 – Ryukyu Islands, Japan". United States Geological Survey. August 3, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  103. ^ "M 6.4 – Luzon, Philippines". United States Geological Survey. August 3, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  104. ^ "M 6.4 – Luzon, Philippines". United States Geological Survey. August 3, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  105. ^ "M 6.1 – Mindanao, Philippines". United States Geological Survey. August 4, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  106. ^ "M 6.1 – Mindanao, Philippines". United States Geological Survey. August 4, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  107. ^ "M 6.8 – Shikoku, Japan". United States Geological Survey. August 5, 1968. Archived from the original on May 2, 2024. Retrieved May 21, 2017.
  108. ^ "M 6.8 – Shikoku, Japan". United States Geological Survey. August 5, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  109. ^ "M 7.6 – Molucca Sea". United States Geological Survey. August 10, 1968. Archived from the original on May 2, 2024. Retrieved May 22, 2017.
  110. ^ "M 7.6 – Molucca Sea". United States Geological Survey. August 10, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  111. ^ "Significant Earthquake: INDONESIA: MOLUCCA ISLANDS: MANADO, CELEBES". National Geophysical Data Center. August 10, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  112. ^ "M 6.5 – Molucca Sea". United States Geological Survey. August 10, 1968. Archived from the original on May 2, 2024. Retrieved May 22, 2017.
  113. ^ "M 6.0 – offshore Michoacan, Mexico". United States Geological Survey. August 14, 1968. Archived from the original on May 2, 2024. Retrieved May 22, 2017.
  114. ^ "M 6.0 – offshore Michoacan, Mexico". United States Geological Survey. August 14, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  115. ^ "M 7.2 – Minahasa, Sulawesi, Indonesia". United States Geological Survey. August 14, 1968. Archived from the original on May 18, 2020. Retrieved May 22, 2017.
  116. ^ "M 7.2 – Minahasa, Sulawesi, Indonesia". United States Geological Survey. August 14, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  117. ^ "Tsunami Event: BANDA SEA". National Geophysical Data Center. August 14, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  118. ^ "M 7.3 – Solomon Islands". United States Geological Survey. August 18, 1968. Archived from the original on May 2, 2024. Retrieved May 22, 2017.
  119. ^ "M 7.3 – Solomon Islands". United States Geological Survey. August 18, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  120. ^ "M 6.5 – Kermadec Islands, New Zealand". United States Geological Survey. August 21, 1968. Archived from the original on May 2, 2024. Retrieved May 27, 2017.
  121. ^ "M 6.3 – Tarija, Bolivia". United States Geological Survey. August 23, 1968. Archived from the original on May 2, 2024. Retrieved May 27, 2017.
  122. ^ "M 6.4 – Philippine Islands region". United States Geological Survey. August 28, 1968. Archived from the original on May 2, 2024. Retrieved May 27, 2017.
  123. ^ "M 6.4 – Philippine Islands region". United States Geological Survey. August 28, 1968. Retrieved February 26, 2021.
  124. ^ "M 7.1 – northeastern Iran". United States Geological Survey. August 31, 1968. Archived from the original on May 2, 2024. Retrieved May 27, 2017.
  125. ^ "M 7.1 – northeastern Iran". United States Geological Survey. August 31, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  126. ^ "Significant Earthquake: IRAN: DASHT-E-BAYAZ". National Geophysical Data Center. August 31, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  127. ^ "M 6.2 – northeastern Iran". United States Geological Survey. September 1, 1968. Archived from the original on May 2, 2024. Retrieved May 27, 2017.
  128. ^ "M 6.2 – northeastern Iran". United States Geological Survey. September 1, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  129. ^ "Significant Earthquake: IRAN: FERDOW". National Geophysical Data Center. September 1, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  130. ^ "M 6.3 – central Turkey". United States Geological Survey. September 3, 1968. Archived from the original on July 4, 2023. Retrieved May 28, 2017.
  131. ^ "M 6.3 – central Turkey". United States Geological Survey. September 3, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  132. ^ "Significant Earthquake: TURKEY: BARTIN, AMASRA, CAKRAZ". National Geophysical Data Center. September 3, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  133. ^ "M 6.3 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. September 8, 1968. Archived from the original on May 2, 2024. Retrieved May 28, 2017.
  134. ^ "M 6.3 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. September 8, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  135. ^ "M 6.1 – central Peru". United States Geological Survey. September 9, 1968. Archived from the original on May 2, 2024. Retrieved May 28, 2017.
  136. ^ "M 6.1 – central Peru". United States Geological Survey. September 9, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  137. ^ "M 6.2 – southern Iran". United States Geological Survey. September 14, 1968. Archived from the original on May 2, 2024. Retrieved May 28, 2017.
  138. ^ "M 6.2 – southern Iran". United States Geological Survey. September 14, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  139. ^ "M 6.8 – New Britain region, Papua New Guinea". United States Geological Survey. September 16, 1968. Archived from the original on May 2, 2024. Retrieved May 29, 2017.
  140. ^ "M 6.8 – New Britain region, Papua New Guinea". United States Geological Survey. September 16, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  141. ^ "M 6.1 – New Britain region, Papua New Guinea". United States Geological Survey. September 16, 1968. Archived from the original on May 2, 2024. Retrieved May 29, 2017.
  142. ^ "M 6.1 – New Britain region, Papua New Guinea". United States Geological Survey. September 16, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  143. ^ "M 6.5 – Sucre, Venezuela". United States Geological Survey. September 20, 1968. Archived from the original on August 1, 2023. Retrieved May 29, 2017.
  144. ^ "M 6.5 – Sucre, Venezuela". United States Geological Survey. September 20, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  145. ^ "Significant Earthquake: VENEZUELA: CARUPANO". National Geophysical Data Center. September 20, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  146. ^ "M 6.7 – Hokkaido, Japan region". United States Geological Survey. September 21, 1968. Archived from the original on May 2, 2024. Retrieved May 29, 2017.
  147. ^ "M 6.7 – Hokkaido, Japan region". United States Geological Survey. September 21, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  148. ^ "M 6.2 – off the west coast of the South Island of New Zealand". United States Geological Survey. September 25, 1968. Archived from the original on May 2, 2024. Retrieved May 29, 2017.
  149. ^ "M 6.0 – Chiapas, Mexico". United States Geological Survey. September 25, 1968. Archived from the original on May 2, 2024. Retrieved May 29, 2017.
  150. ^ "M 6.0 – Chiapas, Mexico". United States Geological Survey. September 25, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  151. ^ "Significant Earthquake: MEXICO-GUATEMALA: S CHIAPAS". National Geophysical Data Center. September 25, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  152. ^ "M 7.1 – Kermadec Islands, New Zealand". United States Geological Survey. September 26, 1968. Archived from the original on May 2, 2024. Retrieved May 29, 2017.
  153. ^ "M 6.4 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. September 27, 1968. Archived from the original on May 2, 2024. Retrieved May 31, 2017.
  154. ^ "M 6.4 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. September 27, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  155. ^ "M 6.1 – near the coast of central Peru". United States Geological Survey. September 28, 1968. Archived from the original on May 2, 2024. Retrieved May 31, 2017.
  156. ^ "M 6.1 – near the coast of central Peru". United States Geological Survey. September 28, 1968. Archived from the original on May 2, 2024. Retrieved February 26, 2021.
  157. ^ "M 7.3 – Bonin Islands, Japan region". United States Geological Survey. October 7, 1968. Archived from the original on May 2, 2024. Retrieved May 31, 2017.
  158. ^ "M 6.5 – Hokkaido, Japan region". United States Geological Survey. October 7, 1968. Retrieved May 31, 2017.
  159. ^ "M 6.5 – Hokkaido, Japan region". United States Geological Survey. October 7, 1968. Retrieved February 27, 2021.
  160. ^ "M 6.1 – New Britain region, Papua New Guinea". United States Geological Survey. October 10, 1968. Retrieved May 31, 2017.
  161. ^ "M 6.1 – New Britain region, Papua New Guinea". United States Geological Survey. October 10, 1968. Retrieved February 27, 2021.
  162. ^ "M 6.5 – Western Australia". United States Geological Survey. October 14, 1968. Retrieved May 31, 2017.
  163. ^ "M 6.5 – Western Australia". United States Geological Survey. October 14, 1968. Retrieved February 27, 2021.
  164. ^ "Significant Earthquake: AUSTRALIA: MECKERING, NORTHAM, CUNDERDIN, YORK". National Geophysical Data Center. October 14, 1968. Retrieved February 27, 2021.
  165. ^ "M 6.2 – Taiwan region". United States Geological Survey. October 20, 1968. Archived from the original on May 2, 2024. Retrieved May 31, 2017.
  166. ^ "M 6.2 – Taiwan region". United States Geological Survey. October 20, 1968. Archived from the original on May 2, 2024. Retrieved February 27, 2021.
  167. ^ "M 7.0 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. October 23, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  168. ^ "M 7.0 – near the north coast of New Guinea, Papua New Guinea". United States Geological Survey. October 23, 1968. Archived from the original on May 2, 2024. Retrieved February 27, 2021.
  169. ^ "Significant Earthquake: PAPUA NEW GUINEA: N COAST, WEWAK, DAGUA". National Geophysical Data Center. October 23, 1968. Archived from the original on May 2, 2024. Retrieved February 27, 2021.
  170. ^ "M 6.3 – Philippine Islands region". United States Geological Survey. October 24, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  171. ^ "M 6.7 – northern Alaska". United States Geological Survey. October 29, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  172. ^ "M 6.7 – northern Alaska". United States Geological Survey. October 29, 1968. Archived from the original on May 2, 2024. Retrieved February 28, 2021.
  173. ^ "M 6.5 – Vanuatu region". United States Geological Survey. November 4, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  174. ^ "M 6.1 – Zulia, Venezuela". United States Geological Survey. November 17, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  175. ^ "M 6.1 – Luzon, Philippines". United States Geological Survey. November 22, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  176. ^ "M 6.1 – Luzon, Philippines". United States Geological Survey. November 22, 1968. Archived from the original on May 2, 2024. Retrieved February 28, 2021.
  177. ^ "M 6.1 – Dodecanese Islands, Greece". United States Geological Survey. December 5, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  178. ^ "M 6.1 – Dodecanese Islands, Greece". United States Geological Survey. December 5, 1968. Archived from the original on May 2, 2024. Retrieved February 28, 2021.
  179. ^ "M 6.0 – Iceland region". United States Geological Survey. December 5, 1968. Archived from the original on February 7, 2024. Retrieved June 3, 2017.
  180. ^ "M 6.0 – Iceland region". United States Geological Survey. December 5, 1968. Archived from the original on May 2, 2024. Retrieved February 28, 2021.
  181. ^ "M 6.6 – Bismarck Sea". United States Geological Survey. December 7, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  182. ^ "M 6.3 – Southern Alaska". United States Geological Survey. December 17, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  183. ^ "M 6.3 – Southern Alaska". United States Geological Survey. December 17, 1968. Archived from the original on May 2, 2024. Retrieved February 28, 2021.
  184. ^ "M 6.0 – near the east coast of the Kamchatka Peninsula, Russia". United States Geological Survey. December 19, 1968. Archived from the original on May 2, 2024. Retrieved June 3, 2017.
  185. ^ "M 6.0 – near the east coast of the Kamchatka Peninsula, Russia". United States Geological Survey. December 19, 1968. Archived from the original on May 2, 2024. Retrieved February 28, 2021.
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