This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 3.6 MLv |
| Local datetime | 1981/09/11 18:57 |
| Universal datetime | 1981/09/11 16:57 |
| Latitude | 47.11 ° ± 3 km |
| Longitude | -2.26 ° ± 8 km |
| Depth | 5 km (operator assigned) ± 0.0 km |
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Testify !Near cities
This table shows only the most populated cities around the epicenter.
| Name | Distance (km) | Population |
|---|---|---|
Saint-Nazaire 
|
19 | 69993 |
| La Baule-Escoublac
|
21 | 16132 |
| Guérande
|
27 | 15873 |
| Pornic
|
16 | 15018 |
| Saint-Brevin-les-Pins
|
17 | 13802 |
| Pornichet
|
17 | 10669 |
| Savenay
|
38 | 8679 |
| Donges
|
29 | 7961 |
| Trignac
|
23 | 7868 |
| Machecoul-Saint-Même
|
36 | 7473 |
| Montoir-de-Bretagne
|
25 | 7088 |
| Sainte-Pazanne
|
34 | 6774 |
| Chaumes-en-Retz
|
26 | 6759 |
| Saint-André-des-Eaux
|
24 | 6473 |
| Le Pellerin
|
35 | 5100 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | final |
|---|---|
| RMS | 0.8 |
| Azimuthal gap | |
| Number of stations used | 18 |
| Number of phases used | 8 |
Webservices
The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :
Phases
| Network | Station | Phase | Time | Residual (s) | Azimuth (°) | Distance (°) | Mode |
|---|---|---|---|---|---|---|---|
| RD | LPF | Pn | 16:57:47.20 | -0.58 | 41 | 1.24 | Manual |
| RD | LPF | Pg | 16:57:49.60 | 1.19 | 41 | 1.24 | Manual |
| RD | LPF | Sg | 16:58:05.30 | -0.36 | 41 | 1.24 | Manual |
| RD | MFF | Pn | 16:57:51.70 | -0.12 | 108 | 1.54 | Manual |
| RD | MFF | Pg | 16:57:54.30 | 0.32 | 108 | 1.54 | Manual |
| RD | MFF | Sg | 16:58:15.20 | -0.13 | 108 | 1.54 | Manual |
| RD | GRR | Pn | 16:57:52.0 | -0.58 | 36 | 1.59 | Manual |
| RD | GRR | Pg | 16:57:55.40 | 0.35 | 36 | 1.59 | Manual |