Strong mag. 6.4 earthquake - South Pacific Ocean on Friday, December 28, 1973 at 05:31 (GMT)

Strong mag. 6.4 earthquake - South Pacific Ocean on Friday, December 28, 1973 at 05:31 (GMT)

Strong magnitude 6.4 earthquake at 549 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Dec 28, 1973 05:31:06 UTC
Magnitude: 6.4
Depth: 549.0 km
Epicenter latitude / longitude: 23.871°S / 179.96°E (international territory)
Antipode: 23.871°N / 0.04°W
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | about seismic energy
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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
6.4549 kmsouth of the Fiji IslandsUSGS
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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (13 quakes)

Date and timeMag
Depth
LocationDetails
Jun 8, 1974 12:36
48 years ago
5.1

518 km
South Pacific OceanMore
Jun 4, 1974 11:29
48 years ago
3.9

619 km
South Pacific OceanMore
May 1, 1974 18:35
48 years ago
4.8

522 km
South Pacific OceanMore
Apr 2, 1974 06:03
48 years ago
4.3

504 km
South Pacific OceanMore
Mar 30, 1974 01:52
48 years ago
4.7

572 km
South Pacific OceanMore
Mar 23, 1974 20:52
48 years ago
5.0

521 km
South Pacific OceanMore
Mar 23, 1974 20:11
48 years ago
4.7

532 km
South Pacific OceanMore
Mar 23, 1974 18:13
48 years ago
4.6

531 km
South Pacific OceanMore
Mar 23, 1974 14:28
48 years ago
6.1

535 km
South Pacific OceanMore
Mar 13, 1974 08:31
48 years ago
4.8

494 km
South Pacific OceanMore
Feb 15, 1974 23:15
48 years ago
4.7

578 km
South Pacific OceanMore
Jan 1, 1974 12:43
48 years ago
5.0

501 km
South Pacific OceanMore
Dec 30, 1973 09:00
48 years ago
4.0

569 km
South Pacific OceanMore

Earlier earthquakes in the same area

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