Major magnitude 7.7 earthquake - Arauco, Region del Biobio, 83 km northwest of Темуко, Provincia de Cautin, Araucania, Chile, on Saturday, 10 May 1975 at 14:27 (GMT)

Major magnitude 7.7 earthquake - Arauco, Region del Biobio, 83 km northwest of Темуко, Provincia de Cautin, Araucania, Chile, on Saturday, 10 May 1975 at 14:27 (GMT)

Major magnitude 7.7 earthquake at 6 km depth

Date & time: 10 May 1975 14:27:38 UTC
Magnitude: 7.7
Depth: 6.0 km
Epicenter latitude / longitude: 38.183°S / 73.232°W (Arauco, Region del Biobio, Chile)
Nearest volcano: Tolguaca (139 km / 86 mi)
Nearby towns and cities:
45 km (28 mi) SSE of Kanyete (Arauco, Biobío) (pop: 20,200) --> See nearby quakes!
62 km (39 mi) SW of Angol (Araucanía) (pop: 44,900) --> See nearby quakes!
67 km (42 mi) NNW of Nueva Imperial (Cautín, Araucanía) (pop: 18,800) --> See nearby quakes!
74 km (46 mi) SSE of Lebu (Arauco, Biobío) (pop: 22,300) --> See nearby quakes!
79 km (49 mi) S of Curanilahue (Arauco, Biobío) (pop: 30,600) --> See nearby quakes!
83 km (52 mi) NW of Temuco (Araucanía) (pop: 238,100) --> See nearby quakes!
90 km (56 mi) SSW of Nacimiento (Biobio, Biobío) (pop: 21,200) --> See nearby quakes!
152 km (94 mi) S of Concepcion (Biobío) (pop: 215,400) --> See nearby quakes!
162 km (101 mi) S of Talcahuano (Biobío) (pop: 253,000) --> See nearby quakes!
575 km (357 mi) SSW of Santiago de Chile (Santiago Metropolitan) (pop: 4,837,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 1016 joules (6219 gigawatt hours, equivalent to 5.4 x 106 tons of TNT or 334.4 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.
MagnitudeDepthLocationSource
M 7.76 kmBio-Bio, ChileUSGS
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 (56 quakes):
  • 06 Feb 1977 19:18 UTC
    | M 4.5 |
    27 km (16.8 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    8553 km (5314 mi) distance
    | | Details
  • 30 Jan 1977 18:43 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    86 km (54 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    8553 km (5314 mi) distance
    | | Details
  • 28 Jan 1977 05:25 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    24 km (15 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    8553 km (5314 mi) distance
    | | Details
  • 13 Oct 1976 11:30 UTC
    | M 5.1 |
    27 km (16.8 mi) depth
    |
    187 km (116 mi) distance
    | USGS | Details
  • 02 Oct 1976 20:00 UTC
    | M 5.1 |
    35 km (21.7 mi) depth
    |
    20 km (12 mi) distance
    | USGS | Details
  • 28 Aug 1976 12:21 UTC
    | M 4.5 |
    37 km (23 mi) depth
    |
    58 km (36 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    8553 km (5314 mi) distance
    | | Details
  • 06 Aug 1976 04:52 UTC
    | M 4.1 |
    39 km (24.2 mi) depth
    |
    79 km (49 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    8553 km (5314 mi) distance
    | | Details
  • 23 Jul 1976 04:23 UTC
    | M 5.0 |
    28 km (17.4 mi) depth
    |
    166 km (103 mi) distance
    | USGS | Details
  • 22 May 1976 15:53 UTC
    | M 5.0 |
    91 km (56.5 mi) depth
    |
    276 km (171 mi) distance
    | USGS | Details
  • 22 Mar 1976 19:38 UTC
    | M 4.1 |
    33 km (20.5 mi) depth
    |
    62 km (39 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    8553 km (5314 mi) distance
    | | Details
    • Show all

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Earlier earthquakes in the same area

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