This event was reviewed by an analyst and confirmed.
Type Earthquake
Magnitude 3.3 MLv
Local datetime 1985/07/20 09:34
Universal datetime 1985/07/20 07:34
Latitude 46.93 ° ± 2 km
Longitude -2.07 ° ± 6 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
Challans  20 20622
Pornic  21 15018
Saint-Brevin-les-Pins  36 13802
Saint-Hilaire-de-Riez  22 11169
Aizenay  40 9510
Saint-Philbert-de-Grand-Lieu  35 8921
Saint-Jean-de-Monts  14 8634
Bouaye  39 7844
Saint-Gilles-Croix-de-Vie  29 7655
Machecoul-Saint-Même  21 7473
Sainte-Pazanne  26 6774
Chaumes-en-Retz  27 6759
Saint-Jean-de-Boiseau  40 5827
La Chevrolière  40 5589
Le Pellerin  38 5100

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 21
Number of phases used 9

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 07:35:14.40 -0.21 32 1.3 Manual
RD LPF Pg 07:35:16.20 0.64 32 1.3 Manual
RD LPF Sg 07:35:34.9 0.44 32 1.3 Manual
RD MFF Pn 07:35:15.30 -0.16 103 1.36 Manual
RD MFF Pg 07:35:16.90 0.18 103 1.36 Manual
RD MFF Sg 07:35:35.59 -0.07 103 1.36 Manual
RD GRR Pn 07:35:19.40 -0.23 29 1.67 Manual
RD GRR Pg 07:35:22.60 0.1 29 1.67 Manual
RD GRR Sg 07:35:45.0 -0.67 29 1.67 Manual