This event was reviewed by an analyst and confirmed.
Type Earthquake
Magnitude 4.2 MLv
Local datetime 1981/09/04 06:42
Universal datetime 1981/09/04 04:42
Latitude 48.66 ° ± 10 km
Longitude -4.51 ° ± 4 km
Depth 5 km (operator assigned) ± 0.0 km

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See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Brest  29 140064
Landerneau  29 15781
Guipavas  27 14482
Plougastel-Daoulas  35 13337
Plouzané  32 12822
Le Relecq-Kerhuon  30 11462
Plabennec  20 8436
Saint-Renan  27 8110
Guilers  27 7981
Lesneven  17 7311
Plouguerneau  6 6607
Ploudalmézeau  18 6297
Gouesnou  24 6116
Lannilis  10 5592
Locmaria-Plouzané  34 5076

Past seismicity

  This map shows only the 50 most significant earthquakes around this event.

Event details

Parameters

Evaluation status final
RMS 0.7
Azimuthal gap
Number of stations used 30
Number of phases used 10

Webservices

The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :

QuakeML GeoJSON Text

Phases

Network Station Phase Time Residual (s) Azimuth (°) Distance (°) Mode
RD LPF Pn 04:42:41.60 -0.11 104 2.4 Manual
RD LPF Sg 04:43:21.90 0.21 104 2.4 Manual
RD GRR Pn 04:42:42.10 -0.22 95 2.44 Manual
RD GRR Sg 04:43:23.50 0.36 95 2.44 Manual
FR SGR Pn 04:42:43.70 -0.55 110 2.59 Manual
RD FLN Pn 04:42:46.10 0.72 86 2.67 Manual
RD FLN Sn 04:43:19.40 -0.77 86 2.67 Manual
RD SSC Pn 04:42:49.30 0.51 90 2.92 Manual
RD SSC Sn 04:43:24.20 -2.32 90 2.92 Manual
RD SSC Sg 04:43:38.70 -0.06 90 2.92 Manual