This event was reviewed by an analyst and confirmed.
Type Earthquake
Magnitude 3.1 MLv
Local datetime 1991/01/04 06:43
Universal datetime 1991/01/04 05:43
Latitude 46.88 ° ± 3 km
Longitude -2.30 ° ± 7 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
Saint-Nazaire  45 69993
Challans  35 20622
La Baule-Escoublac  46 16132
Pornic  33 15018
Saint-Brevin-les-Pins  42 13802
Saint-Hilaire-de-Riez  30 11169
Pornichet  42 10669
Saint-Jean-de-Monts  21 8634
Trignac  49 7868
Saint-Gilles-Croix-de-Vie  36 7655
Machecoul-Saint-Même  39 7473
Montoir-de-Bretagne  50 7088
Sainte-Pazanne  43 6774
Chaumes-en-Retz  42 6759
Saint-André-des-Eaux  49 6473

Past seismicity

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

Event details

Parameters

Evaluation status final
RMS 0.9
Azimuthal gap
Number of stations used 19
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 05:43:59.40 -0.13 36 1.43 Manual
RD LPF Pg 05:44:02.40 1.23 36 1.43 Manual
RD LPF Sg 05:44:22.0 0.88 36 1.43 Manual
RD MFF Pn 05:44:00.0 -0.56 100 1.51 Manual
RD MFF Pg 05:44:02.80 0.21 100 1.51 Manual
RD MFF Sg 05:44:23.60 0.01 100 1.51 Manual
RD GRR Pn 05:44:04.19 -0.26 32 1.8 Manual
RD GRR Pg 05:44:08.60 0.58 32 1.8 Manual
RD GRR Sn 05:44:28.0 -0.96 32 1.8 Manual
RD GRR Sg 05:44:32.0 -0.95 32 1.8 Manual