All earthquakes

Earthquakes in 1975

The USGS located 3,313 earthquakes of magnitude 4.5 or more worldwide in 1975, 106 of them magnitude 6 or more, and 4,580 of magnitude 2.5 or more in the United States. The largest: M7.9 56 km WSW of Panguna, Papua New Guinea, Jul 21, 1975.

From the USGS catalog. Magnitude 4.5 and up worldwide, and 2.5 and up in the United States. Times are local to each quake.

19741976

Map

Where the largest earthquakes of 1975 were located. Select one for its page.

Open the live map with earthquakes

The largest

The 25 largest of 1975, by magnitude.

  1. 7.956 km WSW of Panguna, Papua New Guinea · 49 km deepPapua New Guinea
  2. 7.9Azores-Cape St. Vincent Ridge · 33 km deep
  3. 7.8146 km ESE of Hihifo, Tonga · 33 km deepTonga
  4. 7.8south of Tonga · 9 km deepTonga
  5. 7.717 km SSW of Leilani Estates, Hawaii · 9 km deepHawaii
  6. 7.794 km SSW of Panguna, Papua New Guinea · 44 km deepPapua New Guinea
  7. 7.744 km SSE of Cañete, Chile · 6 km deepChile
  8. 7.636 km NE of Attu Station, Alaska · 10 km deepAlaska
  9. 7.266 km ENE of Alugan, Philippines · 50 km deepPhilippines
  10. 7.0188 km NW of Sola, Vanuatu · 54 km deepVanuatu
  11. 7.0119 km S of Bengkulu, Indonesia · 33 km deepIndonesia
  12. 7.0118 km SE of Shikotan, Russia · 15 km deepRussia
  13. 7.06 km E of Dashiqiao, China · 33 km deepChina
  14. 6.91 km N of Coquimbo, Chile · 4 km deepChile
  15. 6.850 km SSW of Panguna, Papua New Guinea · 47 km deepPapua New Guinea
  16. 6.8120 km E of Man?li, India · 33 km deepIndia
  17. 6.7central Mid-Atlantic Ridge · 33 km deep
  18. 6.764 km W of Kot Malik Barkhurdar, Pakistan · 11 km deepPakistan
  19. 6.77 km ENE of Lice, Turkey · 26 km deepTurkey
  20. 6.796 km WSW of Panguna, Papua New Guinea · 50 km deepPapua New Guinea
  21. 6.731 km NE of Gökçeada, Turkey · 5 km deepTurkey
  22. 6.687 km W of Ambunti, Papua New Guinea · 115 km deepPapua New Guinea
  23. 6.6Komandorskiye Ostrova, Russia region · 4 km deepRussia
  24. 6.6184 km SE of Hualien City, Taiwan · 21 km deepTaiwan
  25. 6.6265 km WNW of Ambon, Indonesia · 33 km deepIndonesia

Month by month

Counted by UTC date, which is how the catalog files them.

MonthQuakesLargestWhere
January 19751,0166.8120 km E of Man?li, India
February 19754187.636 km NE of Attu Station, Alaska
March 19754846.91 km N of Coquimbo, Chile
April 19755936.590 km NW of Olonkinbyen, Svalbard and Jan Mayen
May 19755187.9Azores-Cape St. Vincent Ridge
June 19757377.0118 km SE of Shikotan, Russia
July 19756227.956 km WSW of Panguna, Papua New Guinea
August 19758146.6Komandorskiye Ostrova, Russia region
September 19755396.77 km ENE of Lice, Turkey
October 19754427.8south of Tonga
November 19756487.717 km SSW of Leilani Estates, Hawaii
December 19758307.8146 km ESE of Hihifo, Tonga

By state

Where the year’s United States quakes of magnitude 2.5 and up were located. A state with none that year is not listed.

By country

Where the year’s quakes of magnitude 4.5 and up were located. Quakes at sea, away from any country, are not counted here.

What this means

The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.

By year

Every year the USGS catalog covers.

Sources

Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.