List of earthquakes in 1956: Difference between revisions
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*{{flagicon|Papua New Guinea}} A magnitude 6.0 earthquake struck [[East New Britain Province]], [[Papua New Guinea]] on April 22 at a depth of 35.0 km. <ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888185#executive|title=M 6.0 - New Britain region, Papua New Guinea | publisher=[[United States Geological Survey]]| date=April 22, 1956 | accessdate=January 10, 2017}}</ref> |
*{{flagicon|Papua New Guinea}} A magnitude 6.0 earthquake struck [[East New Britain Province]], [[Papua New Guinea]] on April 22 at a depth of 35.0 km. <ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888185#executive|title=M 6.0 - New Britain region, Papua New Guinea | publisher=[[United States Geological Survey]]| date=April 22, 1956 | accessdate=January 10, 2017}}</ref> |
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*{{flagicon|Japan}} A magnitude 6.2 earthquake struck off the southeast coast of [[Hokkaido]], [[Japan]] on April 23 at a depth of 35.0 km.<ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888187#executive|title=M 6.2 - Hokkaido, Japan region | publisher=[[United States Geological Survey]]| date=April 23, 1956 | accessdate=January 10, 2017}}</ref> |
*{{flagicon|Japan}} A magnitude 6.2 earthquake struck off the southeast coast of [[Hokkaido]], [[Japan]] on April 23 at a depth of 35.0 km.<ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888187#executive|title=M 6.2 - Hokkaido, Japan region | publisher=[[United States Geological Survey]]| date=April 23, 1956 | accessdate=January 10, 2017}}</ref> |
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=== May === |
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{{Infobox earthquakes in month |
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| month = May |
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| 8.0–8.9 = 0 |
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| 7.0–7.9 = 1 |
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| 6.0–6.9 = 6 |
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| 5.0–5.9 = 0 |
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| largest = 7.6 [[Moment magnitude scale|M<sub>w</sub>]] {{flagicon|Fiji}}, [[Fiji]] |
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}} |
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*{{flagicon|Indonesia}} A magnitude 6.6 earthquake struck off the west coast of southern [[Sumatra]], [[Indonesia]] on May 1 at a depth of 66.0 km.<ref>{{cite web| url=http://isc-mirror.iris.washington.edu/cgi-bin/web-db-v4?request=COMPREHENSIVE&out_format=ISF&bot_lat=&top_lat=&left_lon=&right_lon=&ctr_lat=&ctr_lon=&radius=&max_dist_units=deg&searchshape=GLOBAL&srn=&grn=&start_year=1956&start_month=1&start_day=01&start_time=00%3A00%3A00&end_year=1957&end_month=1&end_day=01&end_time=00%3A00%3A00&min_dep=0&max_dep=800&null_dep=on&min_mag=6.0&max_mag=9.9&req_mag_type=Any&req_mag_agcy=Any&min_def=0&max_def=9999&null_phs=on&include_magnitudes=on&include_links=on&include_headers=on&include_comments=on|title=On-Line Bulletin | publisher=[[International Seismological Centre]]| date=May 1, 1956 | accessdate=January 11, 2017}}</ref> |
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*{{flagicon|Pakistan}} A magnitude 6.1 earthquake struck [[Punjab, Pakistan]] on May 13 at a depth of 35.0 km.<ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888248#executive|title=M 6.1 - Pakistan | publisher=[[United States Geological Survey]]| date=May 13, 1956 | accessdate=January 11, 2017}}</ref> |
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*{{flagicon|Papua New Guinea}} A magnitude 6.2 earthquake struck just south of [[Bougainville Island]], [[Papua New Guinea]] on May 19 at a depth of 35.0 km.<ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888266#executive|title=M 6.2 - Bougainville region, Papua New Guinea | publisher=[[United States Geological Survey]]| date=May 19, 1956 | accessdate=January 11, 2017}}</ref> |
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*{{flagicon|Tonga}} A magnitude 6.3 earthquake struck [[Tonga]] on May 22 at a depth of 45.0 km. <ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888278#executive|title=M 6.3 - Tonga | publisher=[[United States Geological Survey]]| date=May 22, 1956 | accessdate=January 11, 2017}}</ref> |
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*{{flagicon|Papua New Guinea}} A magnitude 6.2 earthquake struck [[New Ireland (island)]], [[Papua New Guinea]] on May 22 at a depth of 506.0 km.<ref>{{cite web| url=http://isc-mirror.iris.washington.edu/cgi-bin/web-db-v4?request=COMPREHENSIVE&out_format=ISF&bot_lat=&top_lat=&left_lon=&right_lon=&ctr_lat=&ctr_lon=&radius=&max_dist_units=deg&searchshape=GLOBAL&srn=&grn=&start_year=1956&start_month=1&start_day=01&start_time=00%3A00%3A00&end_year=1957&end_month=1&end_day=01&end_time=00%3A00%3A00&min_dep=0&max_dep=800&null_dep=on&min_mag=6.0&max_mag=9.9&req_mag_type=Any&req_mag_agcy=Any&min_def=0&max_def=9999&null_phs=on&include_magnitudes=on&include_links=on&include_headers=on&include_comments=on|title=On-Line Bulletin | publisher=[[International Seismological Centre]]| date=May 22, 1956 | accessdate=January 11, 2017}}</ref> |
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*{{flagicon|Fiji}} A magnitude 7.6 earthquake struck [[Fiji]] on May 23 at a depth of 419.1 km.<ref>{{cite web| url=http://earthquake.usgs.gov/earthquakes/eventpage/iscgem888284#executive|title=M 7.6 - Fiji region | publisher=[[United States Geological Survey]]| date=May 23, 1956 | accessdate=January 11, 2017}}</ref> |
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*{{flagicon|Fiji}} A magnitude 6.5 earthquake struck [[Fiji]] on May 26 at a depth of 615.0 km.<ref>{{cite web| url=http://isc-mirror.iris.washington.edu/cgi-bin/web-db-v4?request=COMPREHENSIVE&out_format=ISF&bot_lat=&top_lat=&left_lon=&right_lon=&ctr_lat=&ctr_lon=&radius=&max_dist_units=deg&searchshape=GLOBAL&srn=&grn=&start_year=1956&start_month=1&start_day=01&start_time=00%3A00%3A00&end_year=1957&end_month=1&end_day=01&end_time=00%3A00%3A00&min_dep=0&max_dep=800&null_dep=on&min_mag=6.0&max_mag=9.9&req_mag_type=Any&req_mag_agcy=Any&min_def=0&max_def=9999&null_phs=on&include_magnitudes=on&include_links=on&include_headers=on&include_comments=on|title=On-Line Bulletin | publisher=[[International Seismological Centre]]| date=May 26, 1956 | accessdate=January 11, 2017}}</ref> |
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==References== |
==References== |
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Revision as of 00:23, 11 January 2017
.svg)   Approximate epicenters of the earthquakes in 1956
| |||
| Strongest magnitude |  | ||
|---|---|---|---|
| Deadliest | | ||
| Total fatalities | 162 | ||
| Number by magnitude | |||
| 9.0+ | 0 | ||
| 8.0–8.9 | 0 | ||
| 7.0–7.9 | 2 | ||
| 6.0–6.9 | 18 | ||
| 5.0–5.9 | 5 | ||
← 1955 1957 → | |||
This is a list of earthquakes in 1956. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. All dates are listed according to UTC time.
Overall
By death toll
| Rank | Death toll | Magnitude | Location | Depth (km) | Date |
|---|---|---|---|---|---|
| 1 | 148 | 5.3 |  Mount Lebanon Governorate, Lebanon
|
15.0 | March 16 |
- Note: At least 10 casualties
By magnitude
| Rank | Magnitude | Death toll | Location | Depth (km) | Date |
|---|---|---|---|---|---|
| 1 | 7.3 | 0 |  Izu Islands, Japan
|
484.1 | February 18 |
| 2 | 7.0 | 0 |  south of Tonga
|
35.0 | January 10 |
| 2 | 7.0 | 0 |  Manabi Province, Ecuador
|
20.0 | January 16 |
- Note: At least 7.0 magnitude
Notable events
January
| Strongest magnitude | 7.0 Mw 2 events. |
|---|---|
| Deadliest | 5.8 Mw,  , Hungary 2 deaths |
| Number by magnitude | |
| 8.0–8.9 | 0 |
| 7.0–7.9 | 2 |
| 6.0–6.9 | 12 |
| 5.0–5.9 | 1 |
A magnitude 6.5 earthquake struck the Banda Sea, Indonesia on January 1 at a depth of 170.0 km.[1]
A magnitude 6.2 earthquake struck Guerrero, Mexico on January 8 at a depth of 20.0 km. At least 101 people were hurt and major property damage was caused.[2][3]
A magnitude 6.6 earthquake struck Arica and Parinacota Region, Chile on January 8 at a depth of 51.5 km. At least 1 person was killed and some damage was caused.[4][5]
A magnitude 6.5 earthquake struck south of Fiji on January 9 at a depth of 610.0 km.[6]
A magnitude 7.0 earthquake struck south of Tonga on January 10 at a depth of 35.0 km.[7]
A magnitude 6.2 earthquake struck Taranaki, North Island, New Zealand on January 11 at a depth of 180.0 km.[8]
A magnitude 5.8 earthquake struck the eastern suburbs of Budapest, Hungary on January 12 at a depth of 15.0 km.[9] 2 people died and major damage was reported. This was a rare large event for the area.[10]
A magnitude 6.0 earthquake struck the Andreanof Islands, Alaska on January 14 at a depth of 46.5 km.[11]
A magnitude 7.0 earthquake struck Manabi Province, Ecuador on January 16 at a depth of 20.0 km. Some damage was reported.[12][13]- A magnitude 6.2 earthquake struck Antofagasta Region, Chile on January 18 at a depth of 35.0 km.[14]
A magnitude 6.1 earthquake struck Chin State, Myanmar on January 21 at a depth of 60.0 km.[15]
A magnitude 6.6 earthquake struck off the east coast of Kamchatka, Russia on January 23 at a depth of 75.1 km.[16]
A magnitude 6.0 earthquake struck East New Britain Province, Papua New Guinea on January 28 at a depth of 50.0 km.[17]- A magnitude 6.4 earthquake struck just north of North Island, New Zealand on January 30 at a depth of 15.0 km.[18]
- A magnitude 6.9 earthquake struck New Ireland (island), Papua New Guinea on January 31 at a depth of 400.0 km.[19]
February
| Strongest magnitude | 7.3 Mw , Japan |
|---|---|
| Deadliest | 6.2 Mw  , Turkey 4 deaths |
| Number by magnitude | |
| 8.0–8.9 | 0 |
| 7.0–7.9 | 1 |
| 6.0–6.9 | 14 |
| 5.0–5.9 | 0 |
A magnitude 6.7 earthquake struck Pagan region, Northern Mariana Islands on February 1 at a depth of 370.1 km.[20]
A magnitude 6.2 earthquake struck off the west coast of Calabria, Italy on February 1 at a depth of 225.0 km.[21]
A magnitude 6.2 earthquake struck Katavi Region, Tanzania on February 4 at an unknown depth.[22]- A magnitude 6.8 earthquake struck Baja California, Mexico on February 9 at a depth of 6.0 km.[23]
- A magnitude 6.2 aftershock struck Baja California, Mexico on February 9 at a depth of 6.0 km.[24]
A magnitude 6.1 earthquake struck off the east coast of Honshu, Japan on February 10 at a depth of 38.5 km.[25]
A magnitude 6.4 earthquake struck off the northwest coast of Luzon, Philippines on February 12 at a depth of 20.7 km.[26]- A magnitude 6.1 aftershock struck off the northwest coast of Luzon, Philippines on February 13 at a depth of 15.0 km.[27]
- A magnitude 6.1 aftershock struck off the northwest coast of Luzon, Philippines on February 14 at a depth of 15.0 km.[28]
- A magnitude 6.4 earthquake struck Baja California, Mexico on February 14 at a depth of 6.0 km.[29]
- A magnitude 6.3 earthquake struck Baja California, Mexico on February 15 at a depth of 15.0 km.[30]
- A magnitude 7.3 earthquake struck Izu Islands, Japan on February 18 at a depth of 484.1 km.[31]
A magnitude 6.5 earthquake struck south of Haida Gwaii, Canada on February 19 at a depth of 15.0 km.[32]
A magnitude 6.2 earthquake struck Eskişehir Province, Turkey on February 20 at a depth of 15.0 km.[33] Four people were killed and some damage was reported. [34]- A magnitude 6.2 earthquake struck Sagaing Province, Myanmar on February 29 at a depth of 52.7 km.[35]
March
| Strongest magnitude | 6.5 Mw 2 events |
|---|---|
| Deadliest | 5.3 and 5.5 Mw , Lebanon 148 deaths |
| Number by magnitude | |
| 8.0–8.9 | 0 |
| 7.0–7.9 | 0 |
| 6.0–6.9 | 6 |
| 5.0–5.9 | 3 |
- A magnitude 5.3 earthquake struck Waikato, North Island, New Zealand on March 2 at an unknown depth. Some structural damage was caused.[36]
- A magnitude 6.5 earthquake struck Tonga on March 3 at a depth of 35.0 km.[37]
A magnitude 6.1 earthquake struck southern Xinjiang Province, China on March 5 at a depth of 15.0 km.[38]- A magnitude 6.3 earthquake struck off the north coast of Hokkaido, Japan on March 5 at a depth of 20.0 km.[39]
A magnitude 6.2 earthquake struck off the south coast of Panama on March 13 at a depth of 25.0 km.[40]
A magnitude 5.3 earthquake struck Mount Lebanon Governorate, Lebanon on March 16 at a depth of 15.0 km.[41] This was followed 11 minutes later by a magnitude 5.5 event in Beqaa Governorate, Lebanon at a depth of 15.0 km. [42] Both of these events resulted in 148 deaths and major damage in the area.[43]- A magnitude 6.1 earthquake struck West New Britain Province, Papua New Guinea on March 19 at a depth of 50.3 km.[44]
- A magnitude 6.5 earthquake struck Morona-Santiago Province, Ecuador on March 22 at a depth of 86.3 km.[45]
April
| Strongest magnitude | 6.9 Mw  , New Zealand |
|---|---|
| Deadliest | Mw  , Spain 7 deaths |
| Number by magnitude | |
| 8.0–8.9 | 0 |
| 7.0–7.9 | 0 |
| 6.0–6.9 | 8 |
| 5.0–5.9 | 0 |
- A magnitude 6.3 earthquake struck northwest of Nias, Indonesia on April 2 at a depth of 29.9 km. [46]
- A magnitude 6.5 earthquake struck Singida Region, Tanzania on April 4 at an unknown depth. [47]
A magnitude 6.6 earthquake struck Badakhshan Province, Afghanistan on April 6 at a depth of 214.2 km.[48]- A magnitude 6.9 earthquake struck the Kermadec Islands, New Zealand on April 7 at a depth of 346.9 km.[49]
- A magnitude 6.6 earthquake struck southern Sumatra, Indonesia on April 10 at a depth of 129.8 km.[50]
- A magnitude 6.1 earthquake struck the Andreanof Islands, Alaska on April 18 at a depth of 45.0 km.[51]
An earthquake struck the Province of Granada, Spain on April 19. The magnitude and depth were unknown. 7 deaths and major damage were reported.[52]- A magnitude 6.0 earthquake struck East New Britain Province, Papua New Guinea on April 22 at a depth of 35.0 km. [53]
- A magnitude 6.2 earthquake struck off the southeast coast of Hokkaido, Japan on April 23 at a depth of 35.0 km.[54]
May
| Strongest magnitude | 7.6 Mw  , Fiji |
|---|---|
| Number by magnitude | |
| 8.0–8.9 | 0 |
| 7.0–7.9 | 1 |
| 6.0–6.9 | 6 |
| 5.0–5.9 | 0 |
- A magnitude 6.6 earthquake struck off the west coast of southern Sumatra, Indonesia on May 1 at a depth of 66.0 km.[55]
A magnitude 6.1 earthquake struck Punjab, Pakistan on May 13 at a depth of 35.0 km.[56]- A magnitude 6.2 earthquake struck just south of Bougainville Island, Papua New Guinea on May 19 at a depth of 35.0 km.[57]
- A magnitude 6.3 earthquake struck Tonga on May 22 at a depth of 45.0 km. [58]
- A magnitude 6.2 earthquake struck New Ireland (island), Papua New Guinea on May 22 at a depth of 506.0 km.[59]
- A magnitude 7.6 earthquake struck Fiji on May 23 at a depth of 419.1 km.[60]
- A magnitude 6.5 earthquake struck Fiji on May 26 at a depth of 615.0 km.[61]
References
- ^ "On-Line Bulletin". International Seismological Centre. 1 January 1956. Retrieved 9 January 2017.
- ^ "M6.2 – Guerrero, Mexico". United States Geological Survey. 8 January 1956. Retrieved 9 January 2017.
- ^ "Significant Earthquake MEXICO: GUERRERO". National Geophysical Data Center. 8 January 1956. Retrieved 9 January 2017.
- ^ "M6.6 – near the coast of Tarapaca, Chile". United States Geological Survey. 8 January 1956. Retrieved 9 January 2017.
- ^ "Significant Earthquake CHILE". National Geophysical Data Center. 8 January 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 9 January 1956. Retrieved 9 January 2017.
- ^ "M7.0 – south of Tonga". United States Geological Survey. 10 January 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 11 January 1956. Retrieved 9 January 2017.
- ^ "M 5.8 - Hungary". United States Geological Survey. 12 January 1956. Retrieved 9 January 2017.
- ^ "Significant Earthquake HUNGARY". National Geophysical Data Center. 12 January 1956. Retrieved 9 January 2017.
- ^ "M6.0 – Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. 14 January 1956. Retrieved 9 January 2017.
- ^ "M7.0 – near the coast of Ecuador". United States Geological Survey. 16 January 1956. Retrieved 9 January 2017.
- ^ "Significant Earthquake ECUADOR". National Geophysical Data Center. 16 January 1956. Retrieved 9 January 2017.
- ^ "M6.2 – Antofagasta, Chile". United States Geological Survey. 18 January 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 21 January 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 23 January 1956. Retrieved 9 January 2017.
- ^ "M6.0 – New Britain region, Papua New Guinea". United States Geological Survey. 28 January 1956. Retrieved 9 January 2017.
- ^ "M6.4 – off the east coast of the North Island of New Zealand". United States Geological Survey. 30 January 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 31 January 1956. Retrieved 9 January 2017.
- ^ "M6.7 – Pagan region, Northern Mariana Islands". United States Geological Survey. 1 February 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 1 February 1956. Retrieved 9 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 4 February 1956. Retrieved 9 January 2017.
- ^ "M6.8 – 34km ENE of Maneadero, B.C., MX". United States Geological Survey. 9 February 1956. Retrieved 9 January 2017.
- ^ "M6.2 – 66km ESE of Maneadero, B.C., MX". United States Geological Survey. 9 February 1956. Retrieved 9 January 2017.
- ^ "M6.1 – off the east coast of Honshu, Japan". United States Geological Survey. 10 February 1956. Retrieved 9 January 2017.
- ^ "M6.4 – Philippine Islands region". United States Geological Survey. 12 February 1956. Retrieved 9 January 2017.
- ^ "M6.1 – Philippine Islands region". United States Geological Survey. 13 February 1956. Retrieved 9 January 2017.
- ^ "M6.1 – Philippine Islands region". United States Geological Survey. 14 February 1956. Retrieved 9 January 2017.
- ^ "M6.4 – 129km SE of Maneadero, B.C., MX". United States Geological Survey. 14 February 1956. Retrieved 9 January 2017.
- ^ "M6.3 – Baja California, Mexico". United States Geological Survey. 15 February 1956. Retrieved 9 January 2017.
- ^ "M7.3 – Izu Islands, Japan region". United States Geological Survey. 18 February 1956. Retrieved 9 January 2017.
- ^ "M6.5 – Haida Gwaii Region, Canada". United States Geological Survey. 19 February 1956. Retrieved 9 January 2017.
- ^ "M6.2 – western Turkey". United States Geological Survey. 20 February 1956. Retrieved 9 January 2017.
- ^ "Significant Earthquake TURKEY: ESKISEHIR". National Geophysical Data Center. 20 February 1956. Retrieved 9 January 2017.
- ^ "M6.2 – Myanmar". United States Geological Survey. 29 February 1956. Retrieved 9 January 2017.
- ^ "Significant Earthquake NEW ZEALAND: NORTH ISLAND". National Geophysical Data Center. 2 March 1956. Retrieved 10 January 2017.
- ^ "M 6.5 - Tonga". United States Geological Survey. 3 March 1956. Retrieved 10 January 2017.
- ^ "M 6.1 - southern Xinjiang, China". United States Geological Survey. 5 March 1956. Retrieved 10 January 2017.
- ^ "M 6.3 - Hokkaido, Japan region". United States Geological Survey. 5 March 1956. Retrieved 10 January 2017.
- ^ "M 6.2 - south of Panama". United States Geological Survey. 13 March 1956. Retrieved 10 January 2017.
- ^ "M 5.3 - Lebanon - Syria region". United States Geological Survey. 16 March 1956. Retrieved 10 January 2017.
- ^ "M 5.5 - Lebanon - Syria region". United States Geological Survey. 16 March 1956. Retrieved 10 January 2017.
- ^ "Significant Earthquake LEBANON: LITANI". National Geophysical Data Center. 16 March 1956. Retrieved 10 January 2017.
- ^ "M 6.1 - New Britain region, Papua New Guinea". United States Geological Survey. 19 March 1956. Retrieved 10 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 22 March 1956. Retrieved 10 January 2017.
- ^ "M 6.3 - Nias region, Indonesia". United States Geological Survey. 2 April 1956. Retrieved 10 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 4 April 1956. Retrieved 10 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 6 April 1956. Retrieved 10 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 7 April 1956. Retrieved 10 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 10 April 1956. Retrieved 10 January 2017.
- ^ "M 6.1 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. 18 April 1956. Retrieved 10 January 2017.
- ^ "Significant Earthquake SPAIN". National Geophysical Data Center. 19 April 1956. Retrieved 10 January 2017.
- ^ "M 6.0 - New Britain region, Papua New Guinea". United States Geological Survey. 22 April 1956. Retrieved 10 January 2017.
- ^ "M 6.2 - Hokkaido, Japan region". United States Geological Survey. 23 April 1956. Retrieved 10 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 1 May 1956. Retrieved 11 January 2017.
- ^ "M 6.1 - Pakistan". United States Geological Survey. 13 May 1956. Retrieved 11 January 2017.
- ^ "M 6.2 - Bougainville region, Papua New Guinea". United States Geological Survey. 19 May 1956. Retrieved 11 January 2017.
- ^ "M 6.3 - Tonga". United States Geological Survey. 22 May 1956. Retrieved 11 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 22 May 1956. Retrieved 11 January 2017.
- ^ "M 7.6 - Fiji region". United States Geological Survey. 23 May 1956. Retrieved 11 January 2017.
- ^ "On-Line Bulletin". International Seismological Centre. 26 May 1956. Retrieved 11 January 2017.