List of earthquakes in 1939
Earthquakes in 1939
Approximate epicenters of the earthquakes in 1939
|
Strongest magnitude |
Gulf of Tomini, Indonesia (Magnitude 8.1) December 21 |
---|
Deadliest |
Erzincan Province, Turkey (Magnitude 7.8) December 26 32,700 deaths |
---|
Total fatalities |
62,860 |
---|
Number by magnitude |
---|
9.0+ |
0 |
---|
8.0−8.9 |
1 |
---|
7.0−7.9 |
17 |
---|
6.0−6.9 |
59 |
---|
5.0−5.9 |
3 |
---|
|
This is a list of earthquakes in 1939. 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. 1939 was one of the deadliest years for earthquakes with over 60,000 deaths. Two major events resulted in this being the case. In January, a quake struck Chile causing 30,000 deaths, and in December Turkey was shaken by a quake which left 32,700 dead. Several other events occurred in Japan, Peru, Turkey and Ghana which left some fatalities.
Overall
By death toll
Rank |
Death toll |
Magnitude |
Location |
Depth (km) |
Date |
7000100000000000000♠1 |
7004327000000000000♠32,700 |
7000780000000000000♠7.8 |
Erzincan Province, Turkey |
7001200000000000000♠20.0 |
000000002017-12-26-0000December 26 |
7000200000000000000♠2 |
7004300000000000000♠30,000 |
7000780000000000000♠7.8 |
Bio-Bio Region, Chile |
7001350000000000000♠35.0 |
000000002017-01-25-0000January 25 |
7000300000000000000♠3 |
7001410000000000000♠41 |
7000630000000000000♠6.3 |
Izmir Province, Turkey |
7001350000000000000♠35.0 |
000000002017-09-22-0000September 22 |
7000400000000000000♠4 |
7001370000000000000♠37 |
5000000000000000000♠0.0 |
Madre de Dios Region, Peru |
5000000000000000000♠0.0 |
000000002017-06-24-0000June 24 |
7000500000000000000♠5 |
7001270000000000000♠27 |
7000700000000000000♠7.0 |
off the coast of Akita Prefecture, Honshu, Japan |
7001100000000000000♠10.0 |
000000002017-05-01-0000May 1 |
7000600000000000000♠6 |
7001220000000000000♠22 |
7000640000000000000♠6.4 |
Central Region (Ghana) |
7001150000000000000♠15.0 |
000000002017-06-22-0000June 22 |
7000700000000000000♠7 |
7001130000000000000♠13 |
7000590000000000000♠5.9 |
Erzincan Province, Turkey |
7001800000000000000♠80.0 |
000000002017-11-21-0000November 21 |
7000800000000000000♠8 |
7001120000000000000♠12 |
7000780000000000000♠7.8 |
Solomon Islands |
7001150000000000000♠15.0 |
000000002017-04-30-0000April 30 |
- Note: At least 10 casualties
By magnitude
Rank |
Magnitude |
Death toll |
Location |
Depth (km) |
Date |
7000100000000000000♠1 |
7000810000000000000♠8.1 |
5000000000000000000♠0 |
Gulf of Tomini, Indonesia |
7001350000000000000♠35.0 |
000000002017-12-21-0000December 21 |
7000200000000000000♠2 |
7000780000000000000♠7.8 |
7004300000000000000♠30,000 |
Bio-Bio Region, Chile |
7001350000000000000♠35.0 |
000000002017-01-25-0000January 25 |
7000200000000000000♠2 |
7000780000000000000♠7.8 |
7000500000000000000♠5 |
south of Bougainville Island, Papua New Guinea |
7001350000000000000♠35.0 |
000000002017-01-30-0000January 30 |
7000200000000000000♠2 |
7000780000000000000♠7.8 |
7001120000000000000♠12 |
Solomon Islands |
7001150000000000000♠15.0 |
000000002017-04-30-0000April 30 |
7000200000000000000♠2 |
7000780000000000000♠7.8 |
7004327000000000000♠32,700 |
Erzincan Province, Turkey |
7001200000000000000♠20.0 |
000000002017-12-26-0000December 26 |
7000300000000000000♠3 |
7000750000000000000♠7.5 |
5000000000000000000♠0 |
southern Indian Ocean |
7001150000000000000♠15.0 |
000000002017-03-21-0000March 21 |
7000400000000000000♠4 |
7000740000000000000♠7.4 |
5000000000000000000♠0 |
Atacama Region, Chile |
7001350000000000000♠35.0 |
000000002017-04-18-0000April 18 |
7000400000000000000♠4 |
7000740000000000000♠7.4 |
5000000000000000000♠0 |
Vanuatu |
7002135000000000000♠135.0 |
000000002017-10-17-0000October 17 |
7000500000000000000♠5 |
7000730000000000000♠7.3 |
5000000000000000000♠0 |
Alajuela Province, Costa Rica |
7001250000000000000♠25.0 |
000000002017-12-21-0000December 21 |
7000600000000000000♠6 |
7000720000000000000♠7.2 |
5000000000000000000♠0 |
Tonga |
7002100000000000000♠100.0 |
000000002017-06-08-0000June 8 |
7000600000000000000♠6 |
7000720000000000000♠7.2 |
5000000000000000000♠0 |
Vanuatu |
7002180000000000000♠180.0 |
000000002017-08-12-0000August 12 |
7000700000000000000♠7 |
7000710000000000000♠7.1 |
5000000000000000000♠0 |
Near Islands, Alaska |
7001150000000000000♠15.0 |
000000002017-09-08-0000September 8 |
7000800000000000000♠8 |
7000700000000000000♠7.0 |
5000000000000000000♠0 |
Solomon Islands |
7001150000000000000♠15.0 |
000000002017-02-03-0000February 3 |
7000800000000000000♠8 |
7000700000000000000♠7.0 |
5000000000000000000♠0 |
Vanuatu |
7001300000000000000♠30.0 |
000000002017-04-05-0000April 5 |
7000800000000000000♠8 |
7000700000000000000♠7.0 |
5000000000000000000♠0 |
off the coast of Primorski Krai, Russia |
7002530000000000000♠530.0 |
000000002017-04-21-0000April 21 |
7000800000000000000♠8 |
7000700000000000000♠7.0 |
7001270000000000000♠27 |
off the coast of Akita Prefecture, Honshu, Japan |
7001100000000000000♠10.0 |
000000002017-05-01-0000May 1 |
7000800000000000000♠8 |
7000700000000000000♠7.0 |
5000000000000000000♠0 |
Gulf of California, Mexico |
7001100000000000000♠10.0 |
000000002017-05-02-0000May 2 |
7000800000000000000♠8 |
7000700000000000000♠7.0 |
5000000000000000000♠0 |
off the east coast of Honshu, Japan |
7001200000000000000♠20.0 |
000000002017-10-10-0000October 10 |
- Note: At least 7.0 magnitude
Notable events
January
- A magnitude 5.3 earthquake struck south of Turkey on January 2 at an unknown depth. Major damage was reported.[1]
- A magnitude 6.2 earthquake struck Coquimbo Region, Chile on January 18 at a depth of 70.0 km.[2]
- A magnitude 6.5 earthquake struck off the south coast of Guatemala on January 20 at a depth of 70.0 km.[3]
- A magnitude 6.2 earthquake struck off the east coast of mainland Papua New Guinea on January 22 at a depth of 35.0 km.[4]
- A magnitude 6.0 earthquake struck Santiago del Estero Province, Argentina on January 24 at a depth of 580.0 km.[5]
- A magnitude 7.8 earthquake struck Bio-Bio Region, Chile on January 25 at a depth of 35.0 km. At least 30,000 people were killed. Many homes were wrecked and damage costs amounted to $920 million (1939 rate). This was the deadliest quake to strike Chile.[6][7]
- A magnitude 7.8 earthquake struck south of Bougainville Island, Papua New Guinea on January 30 at a depth of 35.0 km. Five people died and at least 101 were injured. Many homes were destroyed.[8][9]
- A magnitude 6.5 earthquake struck off the east coast of mainland Papua New Guinea on January 30 at a depth of 200.0 km.[10]
February
- A magnitude 7.0 earthquake struck the Solomon Islands on February 3 at a depth of 15.0 km.[11]
- A magnitude 6.0 earthquake struck just east of Mindanao, Philippines on February 4 at a depth of 100.0 km.[12]
- A magnitude 6.6 earthquake struck off the east coast of Honshu, Japan on February 16 at a depth of 35.0 km.[13]
March
April
May
- A magnitude 7.0 earthquake struck just off the coast of Akita Prefecture, Honshu, Japan on May 1 at a depth of 10.0 km. Twenty-seven deaths and 52 injuries were reported and 479 homes were destroyed.[27][28]
- A magnitude 6.5 aftershock struck Akita Prefecture, Honshu, Japan on May 1 at a depth of 10.0 km.[29]
- A magnitude 7.0 earthquake struck the Gulf of California, Mexico on May 2 at a depth of 10.0 km.[30]
- A magnitude 6.5 earthquake struck north of Mindoro, Philippines on May 6 at a depth of 110.0 km.[31]
- A magnitude 6.7 earthquake struck east of the Azores on May 8 at a depth of 10.0 km.[32]
- A magnitude 6.5 earthquake struck the Volcano Islands, Japan on May 17 at a depth of 35.0 km.[33]
- A magnitude 6.2 earthquake struck Oruro Department, Bolivia on May 19 at a depth of 100.0 km.[34]
- , A magnitude 6.2 earthquake struck the border of Indonesia and Papua New Guinea on May 22 at a depth of 35.0 km.[35]
- A magnitude 6.0 earthquake struck Buryatia, Russia on May 26 at a depth of 35.0 km.[36]
- A magnitude 6.3 earthquake struck Papua (province), Indonesia on May 26 at a depth of 25.0 km.[37]
- A magnitude 6.1 earthquake struck Manipur, India on May 27 at a depth of 65.7 km.[38]
June
- A magnitude 6.5 earthquake struck the Talaud Islands, Indonesia on June 2 at a depth of 35.0 km.[39]
- A magnitude 6.2 earthquake struck the Savu Sea, Indonesia on June 4 at a depth of 80.0 km.[40]
- A magnitude 7.2 earthquake struck Tonga on June 8 at a depth of 100.0 km.[41]
- A magnitude 6.3 earthquake struck Papua (province), Indonesia on June 9 at a depth of 15.0 km.[42]
- A magnitude 6.7 earthquake struck the Molucca Sea, Indonesia on June 13 at a depth of 150.0 km.[43]
- A magnitude 6.5 earthquake struck off the east coast of Costa Rica on June 18 at a depth of 70.0 km.[44]
- A magnitude 6.4 earthquake struck Central Region (Ghana) on June 22 at a depth of 15.0 km. This was a rare quake for the area. Twenty-two people were killed, 130 were hurt, and 1,500 homes were destroyed.[45][46]
- An earthquake struck Madre de Dios Region, Peru on June 24. The magnitude and depth were unknown. Thirty-seven deaths and some damage was reported.[47]
- A magnitude 6.6 earthquake struck east of Mindanao, Philippines on June 27 at a depth of 35.0 km.[48]
July
August
September
October
- A magnitude 6.0 earthquake struck Potosi Department, Bolivia on October 5 at a depth of 240.0 km.[66]
- A magnitude 6.5 earthquake struck the Banda Sea, Indonesia on October 7 at a depth of 35.0 km.[67]
- A magnitude 6.0 earthquake struck Arica y Parinacota Region, Chile on October 7 at a depth of 110.0 km.[68]
- A magnitude 7.0 earthquake struck off the east coast of Honshu, Japan on October 10 at a depth of 20.0 km.[69]
- An earthquake struck Arequipa Region, Peru on October 11 at a depth of 120.0 km. The magnitude was unknown. Many homes were destroyed.[70]
- A magnitude 7.4 earthquake struck Vanuatu on October 17 at a depth of 135.0 km.[71]
- A magnitude 6.0 earthquake struck off the south coast of Costa Rica on October 20 at a depth of 35.0 km.[72]
- A magnitude 6.0 earthquake struck southeast of Hokkaido, Japan on October 22 at a depth of 90.0 km.[73]
- A magnitude 6.5 earthquake struck Tonga on October 30 at a depth of 150.0 km.[74]
November
December
- A magnitude 6.7 earthquake struck Retalhuleu Department, Guatemala on December 5 at a depth of 45.0 km.[82]
- A magnitude 6.5 earthquake struck the Kuril Islands, Russia on December 16 at a depth of 60.0 km.[83]
- A magnitude 6.0 earthquake struck the Flores Sea, Indonesia on December 20 at a depth of 700.0 km.[84]
- A magnitude 7.3 earthquake struck Alajuela Province, Costa Rica on December 21 at a depth of 25.0 km.[85]
- A magnitude 8.1 earthquake struck the Gulf of Tomini, Indonesia on December 21 at a depth of 35.0 km. This came only five minutes after the Costa Rica event. Many homes were destroyed.[86][87]
- A magnitude 6.8 earthquake struck off the west coast of Costa Rica on December 22 at a depth of 25.0 km.[88]
- A magnitude 6.2 earthquake struck the Gulf of Tomini, Indonesia on December 25 at a depth of 125.0 km.[89]
- A magnitude 6.0 earthquake struck Usulutan Department, El Salvador on December 26 at a depth of 75.0 km.[90]
- A magnitude 7.8 earthquake struck Erzincan Province, Turkey on December 26 at a depth of 20.0 km. Damage costs were around $20 million (1939 rate). Scores of homes were ruined and 32,700 people were killed. This was one of the largest quakes to strike Turkey.[91][92]
- A magnitude 6.5 earthquake struck off the north coast of Papua (province), Indonesia on December 27 at a depth of 80.0 km.[93]
References
- ↑ "Significant Earthquake TURKEY". National Geophysical Data Center. January 2, 1939. Retrieved May 26, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. January 18, 1939. Retrieved May 26, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. January 20, 1939. Retrieved May 26, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. January 22, 1939. Retrieved May 26, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. January 24, 1939. Retrieved May 26, 2016.
- ↑ "M7.8 - Bio-Bio, Chile". United States Geological Survey. January 25, 1939. Retrieved May 26, 2016.
- ↑ "Significant Earthquake CHILE: CHILLAN". National Geophysical Data Center. January 25, 1939. Retrieved May 26, 2016.
- ↑ "M7.8 - Solomon Islands". United States Geological Survey. January 30, 1939. Retrieved May 26, 2016.
- ↑ "Significant Earthquake PAPUA NEW GUINEA: BOUGAINVILLE ISLAND". National Geophysical Data Center. January 30, 1939. Retrieved May 26, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. January 30, 1939. Retrieved May 26, 2016.
- ↑ "M7.0 - Solomon Islands". United States Geological Survey. February 3, 1939. Retrieved May 26, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. February 4, 1939. Retrieved May 26, 2016.
- ↑ "M6.6 - off the east coast of Honshu, Japan". United States Geological Survey. February 16, 1939. Retrieved May 26, 2016.
- ↑ "M6.0 - New Guinea, Papua New Guinea". United States Geological Survey. March 2, 1939. Retrieved May 26, 2016.
- ↑ "M6.3 - Bougainville region, Papua New Guinea". United States Geological Survey. March 8, 1939. Retrieved May 26, 2016.
- ↑ "M6.7 - Kyushu, Japan". United States Geological Survey. March 20, 1939. Retrieved May 26, 2016.
- ↑ "Tsunami Event SEIKAIDO". National Geophysical Data Center. March 20, 1939. Retrieved May 26, 2016.
- ↑ "M7.5 - South Indian Ocean". United States Geological Survey. March 21, 1939. Retrieved May 26, 2016.
- ↑ "M7.0 - Vanuatu". United States Geological Survey. April 5, 1939. Retrieved May 28, 2016.
- ↑ "M7.4 - Atacama, Chile". United States Geological Survey. April 18, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. April 20, 1939. Retrieved May 28, 2016.
- ↑ "M7.0 - Primor'ye, Russia". United States Geological Survey. April 21, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. April 25, 1939. Retrieved May 28, 2016.
- ↑ "M7.8 - Solomon Islands". United States Geological Survey. April 30, 1939. Retrieved May 28, 2016.
- ↑ "Significant Earthquake SOLOMON ISLANDS". National Geophysical Data Center. April 30, 1939. Retrieved May 28, 2016.
- ↑ "Tsunami Event SOLOMON ISLANDS". National Geophysical Data Center. April 30, 1939. Retrieved May 28, 2016.
- ↑ "M7.0 - near the west coast of Honshu, Japan". United States Geological Survey. May 1, 1939. Retrieved May 28, 2016.
- ↑ "Significant Earthquake JAPAN: HONSHU: NW". National Geophysical Data Center. May 1, 1939. Retrieved May 28, 2016.
- ↑ "M6.5 - near the west coast of Honshu, Japan". United States Geological Survey. May 1, 1939. Retrieved May 28, 2016.
- ↑ "M7.0 - Baja California, Mexico". United States Geological Survey. May 2, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. May 6, 1939. Retrieved May 28, 2016.
- ↑ "M6.7 - Azores Islands region". United States Geological Survey. May 8, 1939. Retrieved May 28, 2016.
- ↑ "M6.5 - Volcano Islands, Japan region". United States Geological Survey. May 17, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. May 19, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. May 22, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. May 26, 1939. Retrieved May 28, 2016.
- ↑ "M6.3 - Papua, Indonesia". United States Geological Survey. May 26, 1939. Retrieved May 28, 2016.
- ↑ "M6.1 - Manipur, India region". United States Geological Survey. May 27, 1939. Retrieved May 28, 2016.
- ↑ "M6.5 - Kepulauan Talaud, Indonesia". United States Geological Survey. June 2, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. June 4, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. June 8, 1939. Retrieved May 28, 2016.
- ↑ "M6.5 - Kepulauan Talaud, Indonesia". United States Geological Survey. June 9, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. June 13, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. June 18, 1939. Retrieved May 28, 2016.
- ↑ "M6.5 - Kepulauan Talaud, Indonesia". United States Geological Survey. June 22, 1939. Retrieved May 28, 2016.
- ↑ "Significant Earthquake GHANA: ACCRA". National Geophysical Data Center. June 22, 1939. Retrieved May 28, 2016.
- ↑ "Significant Earthquake PERU: POMACANCHI". National Geophysical Data Center. June 24, 1939. Retrieved May 28, 2016.
- ↑ "M6.6 - Mindanao, Philippines". United States Geological Survey. June 27, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. July 4, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. July 5, 1939. Retrieved May 28, 2016.
- ↑ "M6.5 - Papua, Indonesia". United States Geological Survey. July 12, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. July 14, 1939. Retrieved May 28, 2016.
- ↑ "M6.8 - Fiji region". United States Geological Survey. July 20, 1939. Retrieved May 28, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. August 1, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. August 12, 1939. Retrieved May 29, 2016.
- ↑ "M6.5 - Vanuatu". United States Geological Survey. August 18, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. August 25, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. August 27, 1939. Retrieved May 29, 2016.
- ↑ "M7.1 - Near Islands, Aleutian Islands, Alaska". United States Geological Survey. September 8, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake CHINA: YUNNAN PROVINCE". National Geophysical Data Center. September 19, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. September 20, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. September 20, 1939. Retrieved May 29, 2016.
- ↑ "M6.3 - western Turkey". United States Geological Survey. September 22, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake TURKEY". National Geophysical Data Center. September 22, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. September 28, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 5, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 7, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 7, 1939. Retrieved May 29, 2016.
- ↑ "M7.0 - off the east coast of Honshu, Japan". United States Geological Survey. October 10, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake PERU: CHUQUIBAMBA". National Geophysical Data Center. October 11, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 17, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 20, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 22, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. October 30, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. November 4, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. November 10, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. November 17, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. November 18, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake TURKEY: ERZINCAN". National Geophysical Data Center. November 21, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. November 21, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake AFGHANISTAN". National Geophysical Data Center. November 21, 1939. Retrieved May 29, 2016.
- ↑ "M6.7 - Guatemala". United States Geological Survey. December 5, 1939. Retrieved May 29, 2016.
- ↑ "M6.5 - Kuril Islands". United States Geological Survey. December 16, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. December 20, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. December 21, 1939. Retrieved May 29, 2016.
- ↑ "M8.1 - Sulawesi, Indonesia". United States Geological Survey. December 21, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake INDONESIA: CENTRTAL SULAWESI: KALO,LUWUK,SULA I". National Geophysical Data Center. December 21, 1939. Retrieved May 29, 2016.
- ↑ "M6.8 - Costa Rica". United States Geological Survey. December 22, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. December 25, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. December 26, 1939. Retrieved May 29, 2016.
- ↑ "M7.8 - eastern Turkey". United States Geological Survey. December 26, 1939. Retrieved May 29, 2016.
- ↑ "Significant Earthquake TURKEY: ERZINCAN". National Geophysical Data Center. December 26, 1939. Retrieved May 29, 2016.
- ↑ "On-Line Bulletin". International Seismological Centre. December 27, 1939. Retrieved May 29, 2016.