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Major mag. 7.2 earthquake - D\'Entrecasteaux Islands Region (Papua New Guinea) on Wednesday, 23 October 1974

Major mag. 7.2 earthquake  - D\'Entrecasteaux Islands Region (Papua New Guinea) on Wednesday, 23 October 1974
Date & time: Wednesday, 23 October 1974 06:14 UTC
Magnitude: 7.2
Depth: 48.0 km
Epicenter latitude / longitude: 8.42°S / 154.034°E (Papua New Guinea)
Primary data source: USGS
Estimated released energy: 4 x 1015 joules (1106 gigawatt hours, equivalent to 9.5 x 105 tons of TNT or 59.5 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Thu, 1 Jan 00:00 UTCM
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) scale.
There are no user reports for this quake yet. If you felt it or were nearby when it occurred, be the first to report it!

Aftershocks of the 7.2 quake: D'Entrecasteaux Islands Region (Papua New Guinea), 23 Oct 1974 06h14

Show info about this
List of recorded aftershocks, latest first (48 quakes):
  • 18 Sep 1976 13:36 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    144 km (90 mi) distance
    | USGS | Details
  • 25 Jul 1976 22:00 UTC
    | M 4.9 |
    33 km (20.5 mi) depth
    |
    131 km (82 mi) distance
    | USGS | Details
  • 25 Jul 1976 08:11 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    137 km (85 mi) distance
    | USGS | Details
  • 07 Jul 1976 19:53 UTC
    | M 5.6 |
    17 km (10.6 mi) depth
    |
    130 km (81 mi) distance
    | USGS | Details
  • 05 Jun 1976 14:15 UTC
    | M 5.8 |
    39 km (24.2 mi) depth
    |
    133 km (83 mi) distance
    | USGS | Details
  • 30 May 1976 01:20 UTC
    | M 4.8 |
    22 km (13.7 mi) depth
    |
    128 km (79 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    16995 km (10560 mi) distance
    | | Details
  • 22 May 1976 14:12 UTC
    | M 4.8 |
    40 km (24.9 mi) depth
    |
    118 km (73 mi) distance
    | USGS | Details
  • 14 May 1976 16:53 UTC
    | M 5.0 |
    41 km (25.5 mi) depth
    |
    145 km (90 mi) distance
    | USGS | Details
  • 11 May 1976 14:57 UTC
    | M 5.4 |
    24 km (14.9 mi) depth
    |
    129 km (80 mi) distance
    | USGS | Details
  • 11 May 1976 10:22 UTC
    | M 5.8 |
    22 km (13.7 mi) depth
    |
    117 km (72 mi) distance
    | USGS | Details
  • 11 May 1976 09:58 UTC
    | M 5.9 |
    33 km (20.5 mi) depth
    |
    112 km (70 mi) distance
    | USGS | Details
  • 10 May 1976 10:32 UTC
    | M 5.3 |
    45 km (28 mi) depth
    |
    119 km (74 mi) distance
    | USGS | Details
  • 10 May 1976 10:20 UTC
    | M 5.3 |
    37 km (23 mi) depth
    |
    120 km (75 mi) distance
    | USGS | Details
  • 09 May 1976 21:48 UTC
    | M 5.6 |
    26 km (16.2 mi) depth
    |
    131 km (81 mi) distance
    | USGS | Details
  • 09 May 1976 21:44 UTC
    | M 5.2 |
    41 km (25.5 mi) depth
    |
    147 km (92 mi) distance
    | USGS | Details
  • Show all

Map of aftershocks

Significant earthquakes in the same area since 1900

Major mag. 7.2 earthquake - D'Entrecasteaux Islands Region (Papua New Guinea) on Wednesday, 23 October 1974
 

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