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Major mag. 7.2 earthquake - Izu Islands, Japan Region on Tuesday, 29 February 1972

Major mag. 7.2 earthquake  - Izu Islands, Japan Region on Tuesday, 29 February 1972
Date & time: Tuesday, 29 February 1972 09:23 UTC
Magnitude: 7.2
Depth: 59.8 km
Epicenter latitude / longitude: 33.453°N / 140.929°E (Japan)
Nearest volcano: Hachijo-jima (114 km / 71 mi)
Nearby towns and cities:
196 km (122 mi) SE of Tateyama (pop: 50,100)
197 km (122 mi) SE of Katsuura (pop: 22,300)
198 km (123 mi) SE of Kamogawa (pop: 29,100)
273 km (170 mi) SE of Tokyo (pop: 8,336,600)
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
Tue, 29 Feb 09:23 UTCM 7.2 / 59.8 kmIzu Islands, Japan RegionUSGS
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!

Aftershocks of the 7.2 quake: Izu Islands, Japan Region, 29 Feb 1972 09:23

More info
Recorded aftershocks, latest first (133 quakes):
  • 26 Feb 1974 05:21 UTC
    | M 4.1 |
    215 km (133.6 mi) depth
    |
    168 km (105 mi) distance
    | USGS | Details
  • 06 Feb 1974 06:51 UTC
    | M 4.3 |
    71 km (44.1 mi) depth
    |
    16 km (10 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14501 km (9010 mi) distance
    | | Details
  • 27 Jan 1974 20:12 UTC
    | M 3.7 |
    33 km (20.5 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14501 km (9010 mi) distance
    | | Details
  • 20 Jan 1974 15:48 UTC
    | M 4.4 |
    33 km (20.5 mi) depth
    |
    47 km (29 mi) distance
    | USGS | Details
  • 13 Jan 1974 14:28 UTC
    | M 4.1 |
    33 km (20.5 mi) depth
    |
    19 km (12 mi) distance
    | USGS | Details
  • 10 Jan 1974 22:09 UTC
    | M 4.1 |
    52 km (32.3 mi) depth
    |
    12 km (7 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14501 km (9010 mi) distance
    | | Details
  • 08 Jan 1974 09:23 UTC
    | M 3.8 |
    53 km (32.9 mi) depth
    |
    38 km (23 mi) distance
    | USGS | Details
  • 27 Dec 1973 19:26 UTC
    | M 4.0 |
    33 km (20.5 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14501 km (9010 mi) distance
    | | Details
  • 26 Dec 1973 20:30 UTC
    | M 5.6 |
    63 km (39.1 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 26 Dec 1973 01:28 UTC
    | M 4.4 |
    33 km (20.5 mi) depth
    |
    78 km (48 mi) distance
    | USGS | Details
  • 20 Dec 1973 20:53 UTC
    | M 4.8 |
    126 km (78.3 mi) depth
    |
    99 km (62 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    14501 km (9010 mi) distance
    | | Details
  • Show all

Earlier earthquakes in the same area

Major mag. 7.2 earthquake - Izu Islands, Japan Region on Tuesday, 29 February 1972

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