Major magnitude 7.5 earthquake - North Pacific Ocean, 55 km southeast of Kuril'sk, Sakhalin Oblast, Russia, on Thursday, March 23, 1978 at 03:15 (GMT)

Major magnitude 7.5 earthquake - North Pacific Ocean, 55 km southeast of Kuril\'sk, Sakhalin Oblast, Russia, on Thursday, March 23, 1978 at 03:15 (GMT)

Major magnitude 7.5 earthquake at 33 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Mar 23, 1978 03:15:20 UTC
Magnitude: 7.5
Depth: 33.0 km
Epicenter latitude / longitude: 44.932°N / 148.439°E (North Pacific Ocean, Russia)
Antipode: 44.932°S / 31.561°W
Nearest volcano: Vetrovoi Isthmus Caldera (33 km / 21 mi)
Nearby towns and cities:
55 km (34 mi) SE of Kuril'sk (pop: 1,720) --> See nearby quakes!
228 km (142 mi) ENE of Yuzhno-Kurilsk (pop: 6,470) --> See nearby quakes!
290 km (180 mi) NE of Nemuro (Japan) (pop: 31,200) --> See nearby quakes!
299 km (186 mi) ENE of Shibetsu (Japan) (pop: 21,700) --> See nearby quakes!
346 km (215 mi) ENE of Abashiri (Japan) (pop: 42,500) --> See nearby quakes!
383 km (238 mi) ENE of Kitami (Japan) (pop: 113,100) --> See nearby quakes!
391 km (243 mi) NE of Kushiro (Japan) (pop: 183,600) --> See nearby quakes!
475 km (295 mi) ENE of Obihiro (Japan) (pop: 173,900) --> See nearby quakes!
478 km (297 mi) ESE of Korsakov (pop: 35,100) --> See nearby quakes!
495 km (308 mi) ESE of Yuzhno-Sakhalinsk (pop: 176,500) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.1 x 1016 joules (3117 gigawatt hours, equivalent to 2.7 x 106 tons of TNT or 167.6 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
7.533 kmKuril Islands (Russia)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks

More info

Recorded aftershocks, latest first (722 quakes)

  • 10 Mar 1980 00:26 UTC
    | M 5.0 |
    48 km (29.8 mi) depth
    |
    218 km (135 mi) distance
    | USGS | Details
  • 04 Mar 1980 08:21 UTC
    | M 5.0 |
    268 km (166.5 mi) depth
    |
    232 km (144 mi) distance
    | USGS | Details
  • 03 Mar 1980 17:19 UTC
    | M 5.5 |
    33 km (20.5 mi) depth
    |
    220 km (137 mi) distance
    | USGS | Details
  • 03 Mar 1980 17:01 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    188 km (117 mi) distance
    | USGS | Details
  • 03 Mar 1980 16:03 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    183 km (113 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14137 km (8784 mi) distance
    | | Details
  • 03 Mar 1980 15:22 UTC
    | M 5.0 |
    33 km (20.5 mi) depth
    |
    179 km (111 mi) distance
    | USGS | Details
  • 29 Feb 1980 22:46 UTC
    | M 4.9 |
    72 km (44.7 mi) depth
    |
    201 km (125 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14137 km (8784 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14137 km (8784 mi) distance
    | | Details
  • 27 Feb 1980 23:02 UTC
    | M 5.6 |
    36 km (22.4 mi) depth
    |
    221 km (137 mi) distance
    | USGS | Details
  • 27 Feb 1980 12:44 UTC
    | M 5.9 |
    42 km (26.1 mi) depth
    |
    225 km (140 mi) distance
    | USGS | Details
  • 26 Feb 1980 12:19 UTC
    | M 5.0 |
    38 km (23.6 mi) depth
    |
    238 km (148 mi) distance
    | USGS | Details
  • 26 Feb 1980 09:56 UTC
    | M 5.1 |
    36 km (22.4 mi) depth
    |
    227 km (141 mi) distance
    | USGS | Details
  • 25 Feb 1980 22:38 UTC
    | M 4.7 |
    45 km (28 mi) depth
    |
    192 km (119 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14137 km (8784 mi) distance
    | | Details
  • Show all

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