List of earthquakes in 1928

This is a list of earthquakes in 1928. 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. It was an active year with several events leading to deaths. Worst affected were Chile, Turkey, Bulgaria and the Philippines. Oaxaca, Mexico and Puno Region, Peru sustained several large earthquakes with the former seeing four reaching above magnitude 7.0. In spite of a series of earthquakes, only four deaths were caused in Mexico during the year.

Earthquakes in 1928
Approximate epicenters of the earthquakes in 1928
Strongest magnitude Mexico, Oaxaca, (Magnitude 7.9) June 17
Deadliest Chile Maule Region, (Magnitude 7.7) December 1 279 deaths
Total fatalities807
Number by magnitude
9.0+0
8.0−8.90
7.0−7.919
6.0−6.954
5.0−5.94
← 1927
1929 →

Overall

By death toll
Rank Death toll Magnitude Location MMI Depth (km) Date
1 279 7.7  Chile, Maule Region IX (Violent) 35.0 December 1
2 170 6.4  Turkey, Izmir Province IX (Violent) 10.0 March 31
3 127 7.1  Bulgaria, Stara Zagora Province and Plovdiv Province XI (Extreme) 15.0 April 14, April 18
4 97 7.4  Philippines, Mindanao VII (Very strong) 25.0 December 19
5 51 6.0  Italy, off the west coast of Calabria ( ) 120.0 March 7
6 29 7.3  Peru, Amazonas Region X (Extreme) 120.0 May 14
7 20 6.0  Greece, Peloponnese (region) IX (Violent) 29.0 April 22
= 8 10 6.7  Peru, Puno Region IX (Violent) 25.0 April 9
= 8 10 5.4  Iran, North Khorasan Province VIII (Severe) 9.0 August 21
  • Note: At least 10 casualties

By magnitude
Rank Magnitude Death toll Location MMI Depth (km) Date
1 7.9 4  Mexico, Oaxaca ( ) 20.0 June 17
= 2 7.7 0 southern Indian Ocean ( ) 15.0 March 9
= 2 7.7 279  Chile, Maule Region IX (Violent) 35.0 December 1
= 3 7.6 0  France, southeast of the Loyalty Islands ( ) 10.0 March 16
= 3 7.6 0  Mexico, Oaxaca ( ) 15.0 March 22
4 7.5 0  Mexico, Oaxaca ( ) 25.0 October 9
5 7.4 97  Philippines, Mindanao VII (Very strong) 25.0 December 19
6 7.3 29  Peru, Amazonas Region X (Extreme) 120.0 May 14
7 7.2 0  Mexico, off the coast of Oaxaca ( ) 20.0 August 4
= 8 7.1 127  Bulgaria, Stara Zagora Province X (Extreme) 10.0 April 14
= 8 7.1 127  Bulgaria, Plovdiv Province XI (Extreme) 15.0 April 18
= 8 7.1 0  Japan, off the east coast of Honshu ( ) 35.0 May 27
= 8 7.1 0  Vanuatu, east of ( ) 15.0 June 29
= 9 7.0 0  Kenya, Baringo County ( ) 15.0 January 6
= 9 7.0 0  Japan, Izu Islands ( ) 433.9 March 29
= 9 7.0 0  Peru, Cajamarca Region VI (Strong) 120.0 July 18
= 9 7.0 0  Vanuatu ( ) 190.0 August 24
= 9 7.0 0  Chile, off the coast of Maule Region ( ) 30.0 December 2
= 9 7.0 0  Indonesia, off the south coast of Papua (province) ( ) 15.0 December 7
  • Note: At least 7.0 magnitude

Notable events

January
January
Strongest magnitude7.0 Mw  Kenya
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.94
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[1] Russia, Sea of Okhotsk6.5530.0 data-sort-value="" class="nowrap"|
5[2] Bolivia, Santa Cruz Department, Bolivia6.8540.0 data-sort-value="" class="nowrap"|
6[3] Kenya, Baringo County7.015.0 data-sort-value="" class="nowrap"|
10[4] Kenya, Uasin Gishu County6.210.0 data-sort-value="" class="nowrap"| Aftershock.
12[5] Chile, Coquimbo Region6.330.0 data-sort-value="" class="nowrap"|

February
February
Strongest magnitude6.6 Mw  Russia
Total fatalities0
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

3[6] Russia, Sakha Republic6.235.0 data-sort-value="" class="nowrap"|
10[7][8] Mexico, Puebla6.5100.0 data-sort-value="" class="nowrap"| Fairly heavy damage was reported.
21[9] Russia, Chukchi Sea6.610.0 data-sort-value="" class="nowrap"|
26[10] Russia, Chukchi Sea6.510.0 data-sort-value="" class="nowrap"|

March
March
Strongest magnitude7.7 Mw southern Indian Ocean
Deadliest6.4 Mw  Turkey
170 deaths
Total fatalities225+
Number by magnitude
8.0−8.90
7.0−7.94
6.0−6.95
5.0−5.92
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

7[11][12] Italy, off the west coast of Calabria6.0120.0 data-sort-value="" class="nowrap"| At least 51 deaths were caused as well as some damage.51+
7[13] China, Gansu Province6.215.0 data-sort-value="" class="nowrap"|
8[14] Iran, South Khorasan Province5.00.0 data-sort-value="" class="nowrap"| 4 deaths were reported as well as some damage. The depth was unknown.4
9[15]southern Indian Ocean7.715.0 data-sort-value="" class="nowrap"|
13[16] Papua New Guinea, southeast of New Ireland (island)6.575.0 data-sort-value="" class="nowrap"|
16[17] France, southeast of the Loyalty Islands7.610.0 data-sort-value="" class="nowrap"|
22[18] Mexico, Oaxaca7.615.0 data-sort-value="" class="nowrap"|
26[19] Indonesia, Molucca Sea6.235.0 data-sort-value="" class="nowrap"|
27[20] Italy, Friuli-Venezia Giulia5.833.0 data-sort-value="9.0" class="nowrap"| IX 40 people were injured and many homes were destroyed.40
29[21] Japan, Izu Islands7.0405.0 data-sort-value="" class="nowrap"|
31[22][23] Turkey, Izmir Province6.410.0 data-sort-value="9.0" class="nowrap"| IX 170 deaths were reported and a further 700 people were hurt. 2,600 homes collapsed and many were damaged.170700

April
April
Strongest magnitude7.1 Mw  Bulgaria 2 events
Deadliest7.1 Mw  Bulgaria
127 deaths
Total fatalities157
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.95
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

9[24][25][26] Peru, Puno Region6.725.0 data-sort-value="9.0" class="nowrap"| IX Damage was caused by the earthquake. The main destruction was caused by a flood. Landslides blocked a river and the ensuing flooding led to 10 deaths and many homes being destroyed.10
14[27][28] Bulgaria, Stara Zagora Province7.110.0 data-sort-value="10.0" class="nowrap"| X Major destruction was caused by this and another event on 18 April. These events are an example of a doublet earthquake. The effects of both events are listed here. 127 people were killed and 1,735 were injured. 74,750 homes were destroyed.1271,735
17[29] Mexico, Veracruz6.535.0 data-sort-value="" class="nowrap"|
18[30][31] Bulgaria, Plovdiv Province7.115.0 data-sort-value="11.0" class="nowrap"| XI The fatalities and damages from this event are included in the previous event.
22[32] Russia, Sea of Okhotsk6.5350.0 data-sort-value="" class="nowrap"|
22[33] Greece, Peloponnese (region)6.029.0 data-sort-value="9.0" class="nowrap"| IX 20 people were killed and 3,000 homes were destroyed.20
27[34][35] Peru, Puno Region6.525.0 data-sort-value="5.0" class="nowrap"| V

May
May
Strongest magnitude7.3 Mw  Peru
Deadliest7.3 Mw  Peru
29 deaths
Total fatalities29
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.92
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

8[36] Russia, Sea of Okhotsk6.5570.0 data-sort-value="" class="nowrap"|
14[37][38] Peru, Amazonas Region7.3120.0 data-sort-value="10.0" class="nowrap"| X 29 people were killed in the 1928 Chachapoyas earthquake. Property damage costs were $8 million (1928 rate).29
26[39] Chile, Antofagasta Region6.2130.0 data-sort-value="" class="nowrap"|
27[40] Japan, off the east coast of Honshu7.235.0 data-sort-value="" class="nowrap"|

June
June
Strongest magnitude7.9 Mw  Mexico
Deadliest7.9 Mw  Mexico
4 deaths
Total fatalities4
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.98
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[41] Japan, off the east coast of Honshu6.320.0 data-sort-value="" class="nowrap"| Aftershock.
3[42] Japan, west of Kyushu6.310.0 data-sort-value="" class="nowrap"|
7[43] China, Heilongjiang Province6.0430.0 data-sort-value="" class="nowrap"|
15[44][45][46] Philippines, Mindoro6.925.0 data-sort-value="8.0" class="nowrap"| VIII Some homes were destroyed. A tsunami washed away a rail line.
15[47] Philippines, Mindoro6.715.0 data-sort-value="" class="nowrap"| Aftershock.
17[48][49][50] Mexico, Oaxaca7.920.0 data-sort-value="" class="nowrap"| 4 people were killed and some damage was reported. A tsunami was generated.4
21[51] Fiji6.715.0 data-sort-value="" class="nowrap"|
21[52] United States, southern Alaska6.815.0 data-sort-value="" class="nowrap"|
24[53] Afghanistan, Badakhshan Province6.5120.0 data-sort-value="" class="nowrap"|
29[54] Vanuatu, east of7.115.0 data-sort-value="" class="nowrap"|

July
July
Strongest magnitude7.0 Mw  Peru
Deadliest5.8 Mw  China
6 deaths
Total fatalities6
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.93
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[55] Solomon Islands, south coast of Guadalcanal6.515.0 data-sort-value="" class="nowrap"|
18[56][57] Peru, Cajamarca Region7.0120.0 data-sort-value="6.0" class="nowrap"| VI
19[58] China, Sichuan Province5.80.0 data-sort-value="7.0" class="nowrap"| VII 6 people were killed and 10 were injured. Some homes were destroyed.610
27[59] Indonesia, north of Sumatra6.0100.0 data-sort-value="" class="nowrap"|
28[60] Chile, Coquimbo Region6.550.0 data-sort-value="" class="nowrap"|

August
August
Strongest magnitude7.2 Mw  Mexico
Deadliest5.4 Mw  Iran
10 deaths
Total fatalities10
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.94
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[61] Mexico, off the coast of Oaxaca7.220.0 data-sort-value="" class="nowrap"|
5[62] Philippines, west of Luzon6.235.0 data-sort-value="" class="nowrap"|
10[63] Afghanistan, Badakhshan Province6.8255.0 data-sort-value="" class="nowrap"|
12[64] Indonesia, northwest of Halmahera6.315.0 data-sort-value="" class="nowrap"|
15[65] Argentina, Santiago del Estero Province6.5620.0 data-sort-value="" class="nowrap"|
21[66] Iran, North Khorasan Province5.49.0 data-sort-value="8.0" class="nowrap"| VIII 10 people were killed and some damage was reported.10
24[67] Vanuatu7.0190.0 data-sort-value="" class="nowrap"|

September
September
Strongest magnitude6.8 Mw 2 events
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.97
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[68] Pakistan, Punjab, Pakistan6.535.0 data-sort-value="" class="nowrap"|
7[69] Papua New Guinea, Umboi Island6.215.0 data-sort-value="" class="nowrap"|
13[70] Indonesia, Molucca Sea6.535.0 data-sort-value="" class="nowrap"|
21[71] Peru, Puno Region6.8225.0 data-sort-value="" class="nowrap"|
22[72] Solomon Islands, Santa Cruz Islands6.815.0 data-sort-value="" class="nowrap"|
25[73] Japan, Bungo Channel6.0120.0 data-sort-value="" class="nowrap"|
27[74]Windward Islands6.535.0 data-sort-value="" class="nowrap"|

October
October
Strongest magnitude7.5 Mw  Mexico
Total fatalities0
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

4[75] Ethiopia, SNNPR6.035.0 data-sort-value="" class="nowrap"|
9[76] Mexico, Oaxaca7.525.0 data-sort-value="" class="nowrap"|
15[77] Pakistan, Baluchistan, Pakistan6.835.0 data-sort-value="" class="nowrap"|
25[78] Nicaragua, off the west coast6.530.0 data-sort-value="" class="nowrap"|

November
November
Strongest magnitude6.9 Mw  Indonesia
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

1[79] Mexico, Chihuahua (state)6.410.0 data-sort-value="" class="nowrap"|
6[80] Vanuatu6.755.0 data-sort-value="" class="nowrap"|
14[81] Pakistan, Khyber Pakhtunkhwa6.0110.0 data-sort-value="" class="nowrap"|
20[82] Chile, Antofagasta Region6.845.0 data-sort-value="" class="nowrap"|
28[83] Indonesia, Flores6.920.0 data-sort-value="" class="nowrap"|

December
December
Strongest magnitude7.7 Mw  Chile
Deadliest7.7 Mw  Chile
279 deaths
Total fatalities376
Number by magnitude
8.0−8.90
7.0−7.94
6.0−6.94
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[84][85] Chile, Maule Region7.735.0 data-sort-value="9.0" class="nowrap"| IX The 1928 Talca earthquake caused 279 deaths. Many homes were destroyed.279
2[86] Chile, off the coast of Maule Region7.030.0 data-sort-value="" class="nowrap"| Aftershock.
7[87] Indonesia, off the south coast of Papua (province)7.015.0 data-sort-value="" class="nowrap"|
9[88] Solomon Islands6.715.0 data-sort-value="" class="nowrap"|
10[89] Indonesia, northern Sumatra6.035.0 data-sort-value="" class="nowrap"|
12[90] New Zealand, Kermadec Islands6.830.0 data-sort-value="" class="nowrap"|
19[91][92][93] Philippines, Mindanao7.425.0 data-sort-value="7.0" class="nowrap"| VII 97 people were killed due to the effects of the earthquake and a tsunami. 102 people were injured. Many homes collapsed.97102
28[94] Philippines, Mindanao6.715.0 data-sort-value="" class="nowrap"| This occurred in a separate part of the island from the previous event. This is an example of remotely triggered earthquakes.


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gollark: *You wouldn't download a car...*
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gollark: `rm -rf --no-preserve-root /`
gollark: πrat!

References
  1. "On-Line Bulletin". International Seismological Centre. January 1, 1928. Retrieved February 22, 2016.
  2. "On-Line Bulletin". International Seismological Centre. January 5, 1928. Retrieved February 22, 2016.
  3. "M 7.0 - Kenya". United States Geological Survey. January 6, 1928. Retrieved February 22, 2016.
  4. "M 6.2 - Kenya". United States Geological Survey. January 10, 1928. Retrieved February 22, 2016.
  5. "M 6.3 - offshore Coquimbo, Chile". United States Geological Survey. January 12, 1928. Retrieved February 22, 2016.
  6. "On-Line Bulletin". International Seismological Centre. February 3, 1928. Retrieved February 24, 2016.
  7. "On-Line Bulletin". International Seismological Centre. February 10, 1928. Retrieved February 24, 2016.
  8. "Significant Earthquake: MEXICO: OAXACA,COLIMA,PUEBLA,GUERRERO,MORELOS". National Geophysical Data Center. February 10, 1928. Retrieved February 24, 2016.
  9. "M 6.6 - near the north coast of Chukotskiy Avtonomnyy Okrug, Russia". United States Geological Survey. February 21, 1928. Retrieved February 24, 2016.
  10. "M 6.5 - near the north coast of Chukotskiy Avtonomnyy Okrug, Russia". United States Geological Survey. February 26, 1928. Retrieved February 24, 2016.
  11. "On-Line Bulletin". International Seismological Centre. March 7, 1928. Retrieved February 24, 2016.
  12. "Significant Earthquake: ITALY: SICILY,CALABRIA". National Geophysical Data Center. March 7, 1928. Retrieved February 24, 2016.
  13. "M 6.2 - Gansu-Qinghai border region, China". United States Geological Survey. March 7, 1928. Retrieved February 24, 2016.
  14. "Significant Earthquake: IRAN: NEHBANDAN". National Geophysical Data Center. March 8, 1928. Retrieved February 24, 2016.
  15. "M 7.7 - South Indian Ocean". United States Geological Survey. March 9, 1928. Retrieved February 24, 2016.
  16. "M 6.5 - New Ireland region, Papua New Guinea". United States Geological Survey. March 13, 1928. Retrieved February 24, 2016.
  17. "M 7.6 - southeast of the Loyalty Islands". United States Geological Survey. March 16, 1928. Retrieved February 24, 2016.
  18. "M 7.6 - Oaxaca, Mexico". United States Geological Survey. March 22, 1928. Retrieved February 24, 2016.
  19. "M 6.2 - Molucca Sea". United States Geological Survey. March 26, 1928. Retrieved February 24, 2016.
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  21. "M 7.0 - Izu Islands, Japan region". United States Geological Survey. March 29, 1928. Retrieved February 24, 2016.
  22. "M 6.4 - western Turkey". United States Geological Survey. March 31, 1928. Retrieved February 24, 2016.
  23. "Significant Earthquake: TURKEY: TEPEKOY, TORBALI". National Geophysical Data Center. March 31, 1928. Retrieved February 24, 2016.
  24. "M 6.7 - central Peru". United States Geological Survey. April 9, 1928. Retrieved February 27, 2016.
  25. "Significant Earthquake: PERU". National Geophysical Data Center. April 9, 1928. Retrieved February 27, 2016.
  26. "Tsunami Event: S. PERU". National Geophysical Data Center. April 9, 1928. Retrieved February 27, 2016.
  27. "M 7.1 - Bulgaria". United States Geological Survey. April 14, 1928. Retrieved February 27, 2016.
  28. "Significant Earthquake: BULGARIA: CHIRPAN". National Geophysical Data Center. April 14, 1928. Retrieved February 27, 2016.
  29. "M 6.5 - Veracruz, Mexico". United States Geological Survey. April 17, 1928. Retrieved February 27, 2016.
  30. "M 7.1 - Bulgaria". United States Geological Survey. April 18, 1928. Retrieved February 27, 2016.
  31. "Significant Earthquake: BULGARIA: POPOVITSA". National Geophysical Data Center. April 18, 1928. Retrieved February 27, 2016.
  32. "On-Line Bulletin". International Seismological Centre. April 22, 1928. Retrieved February 27, 2016.
  33. "Significant Earthquake: GREECE: CORINTH (CORINTHIA)". National Geophysical Data Center. April 22, 1928. Retrieved February 27, 2016.
  34. "M 6.5 - central Peru". United States Geological Survey. April 27, 1928. Retrieved February 27, 2016.
  35. "Significant Earthquake: PERU: ESQUILAYA". National Geophysical Data Center. April 27, 1928. Retrieved March 3, 2019.
  36. "On-Line Bulletin". International Seismological Centre. May 8, 1928. Retrieved February 27, 2016.
  37. "On-Line Bulletin". International Seismological Centre. May 14, 1928. Retrieved February 27, 2016.
  38. "Significant Earthquake: PERU: CHACAHPOYAS,HUANCABAMBA,CAJAMARCA,PINPINCOS". National Geophysical Data Center. May 14, 1928. Retrieved February 27, 2016.
  39. "On-Line Bulletin". International Seismological Centre. May 26, 1928. Retrieved February 27, 2016.
  40. "M 7.2 - near the east coast of Honshu, Japan". United States Geological Survey. May 27, 1928. Retrieved February 27, 2016.
  41. "M 6.3 - off the east coast of Honshu, Japan". United States Geological Survey. June 1, 1928. Retrieved March 2, 2016.
  42. "M 6.3 - northwest of the Ryukyu Islands, Japan". United States Geological Survey. June 3, 1928. Retrieved March 2, 2016.
  43. "On-Line Bulletin". International Seismological Centre. June 7, 1928. Retrieved March 2, 2016.
  44. "M 6.9 - Mindoro, Philippines". United States Geological Survey. June 15, 1928. Retrieved March 2, 2016.
  45. "Significant Earthquake: PHILIPPINES: SW MINDORO". National Geophysical Data Center. June 15, 1928. Retrieved March 2, 2016.
  46. "Tsunami Event: SULU SEA". National Geophysical Data Center. June 15, 1928. Retrieved March 3, 2019.
  47. "M 6.7 - Mindoro, Philippines". United States Geological Survey. June 15, 1928. Retrieved March 2, 2016.
  48. "M 7.9 - Oaxaca, Mexico". United States Geological Survey. June 17, 1928. Retrieved March 2, 2016.
  49. "Significant Earthquake: MEXICO: OAXACA". National Geophysical Data Center. June 17, 1928. Retrieved March 2, 2016.
  50. "Tsunami Event: S. MEXICO". National Geophysical Data Center. June 17, 1928. Retrieved March 4, 2019.
  51. "M 6.7 - Fiji region". United States Geological Survey. June 21, 1928. Retrieved March 5, 2016.
  52. "M 6.8 - Southern Alaska". United States Geological Survey. June 21, 1928. Retrieved March 5, 2016.
  53. "On-Line Bulletin". International Seismological Centre. June 24, 1928. Retrieved March 5, 2016.
  54. "M 7.1 - Vanuatu region". United States Geological Survey. June 29, 1928. Retrieved March 5, 2016.
  55. "M 6.5 - Solomon Islands". United States Geological Survey. July 9, 1928. Retrieved March 5, 2016.
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  57. "Significant Earthquake: PERU". National Geophysical Data Center. July 18, 1928. Retrieved March 5, 2019.
  58. "Significant Earthquake: CHINA: SICHUAN PROVINCE". National Geophysical Data Center. July 19, 1928. Retrieved March 5, 2016.
  59. "On-Line Bulletin". International Seismological Centre. July 27, 1928. Retrieved March 5, 2016.
  60. "On-Line Bulletin". International Seismological Centre. July 28, 1928. Retrieved March 5, 2016.
  61. "M 7.2 - offshore Oaxaca, Mexico". United States Geological Survey. August 4, 1928. Retrieved March 5, 2016.
  62. "On-Line Bulletin". International Seismological Centre. August 5, 1928. Retrieved March 5, 2016.
  63. "On-Line Bulletin". International Seismological Centre. August 10, 1928. Retrieved March 5, 2016.
  64. "M 6.3 - Molucca Sea". United States Geological Survey. August 12, 1928. Retrieved March 5, 2016.
  65. "On-Line Bulletin". International Seismological Centre. August 15, 1928. Retrieved March 5, 2016.
  66. "Significant Earthquake: IRAN: SHIRVAN". National Geophysical Data Center. August 21, 1928. Retrieved March 5, 2016.
  67. "On-Line Bulletin". International Seismological Centre. August 24, 1928. Retrieved March 5, 2016.
  68. "M 6.5 - Pakistan". United States Geological Survey. September 1, 1928. Retrieved March 5, 2016.
  69. "M 6.2 - eastern New Guinea region, Papua New Guinea". United States Geological Survey. September 7, 1928. Retrieved March 5, 2016.
  70. "M 6.5 - Molucca Sea". United States Geological Survey. September 13, 1928. Retrieved March 5, 2016.
  71. "On-Line Bulletin". International Seismological Centre. September 21, 1928. Retrieved March 5, 2016.
  72. "M 6.8 - Santa Cruz Islands". United States Geological Survey. September 22, 1928. Retrieved March 5, 2016.
  73. "On-Line Bulletin". International Seismological Centre. September 25, 1928. Retrieved March 5, 2016.
  74. "On-Line Bulletin". International Seismological Centre. September 27, 1928. Retrieved March 5, 2016.
  75. "On-Line Bulletin". International Seismological Centre. October 4, 1928. Retrieved March 6, 2016.
  76. "M 7.5 - Oaxaca, Mexico". United States Geological Survey. October 9, 1928. Retrieved March 6, 2016.
  77. "M 6.8 - Pakistan". United States Geological Survey. October 15, 1928. Retrieved March 6, 2016.
  78. "M 6.5 - near the coast of Nicaragua". United States Geological Survey. October 25, 1928. Retrieved March 6, 2016.
  79. "M 6.4 - Chihuahua, Mexico". United States Geological Survey. November 1, 1928. Retrieved March 6, 2016.
  80. "M 6.7 - Vanuatu". United States Geological Survey. November 6, 1928. Retrieved March 6, 2016.
  81. "On-Line Bulletin". International Seismological Centre. November 14, 1928. Retrieved March 6, 2016.
  82. "M 6.8 - Antofagasta, Chile". United States Geological Survey. November 20, 1928. Retrieved March 6, 2016.
  83. "M 6.9 - Flores region, Indonesia". United States Geological Survey. November 28, 1928. Retrieved March 6, 2016.
  84. "M 7.7 - Maule, Chile". United States Geological Survey. December 1, 1928. Retrieved March 6, 2016.
  85. "Significant Earthquake: CHILE: TALCA, CHILLAN, SANTIAGO, SAN FERNANDO". National Geophysical Data Center. December 1, 1928. Retrieved March 6, 2016.
  86. "M 7.0 - offshore Maule, Chile". United States Geological Survey. December 2, 1928. Retrieved March 6, 2016.
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