This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 4 MLv |
| Local datetime | 1983/08/14 17:35 |
| Universal datetime | 1983/08/14 15:35 |
| Latitude | 47.59 ° ± 1 km |
| Longitude | -1.85 ° ± 4 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 |
|---|---|---|
Pontchâteau 
|
25 | 10684 |
| Blain
|
15 | 9793 |
| Treillières
|
35 | 9219 |
| Redon
|
19 | 9014 |
| Nort-sur-Erdre
|
30 | 8763 |
| Savenay
|
26 | 8679 |
| Donges
|
33 | 7961 |
| Bain-de-Bretagne
|
30 | 7331 |
| Guipry-Messac
|
26 | 6961 |
| Héric
|
25 | 6049 |
| Vigneux-de-Bretagne
|
32 | 6030 |
| Grandchamps-des-Fontaines
|
31 | 6016 |
| Missillac
|
27 | 5342 |
| Plessé
|
5 | 5248 |
| Guémené-Penfao
|
4 | 5200 |
Past seismicity
This map shows only the 50 most significant earthquakes around this event.
Event details
Parameters
| Evaluation status | final |
|---|---|
| RMS | 0.5 |
| Azimuthal gap | |
| Number of stations used | 26 |
| Number of phases used | 12 |
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 | Pg | 15:36:06.10 | 0.69 | 50 | 0.7 | Manual |
| RD | GRR | Pn | 15:36:12.0 | -0.12 | 39 | 1.04 | Manual |
| RD | GRR | Sg | 15:36:25.90 | -0.38 | 39 | 1.04 | Manual |
| RD | FLN | Pn | 15:36:18.0 | -0.22 | 37 | 1.49 | Manual |
| RD | FLN | Pg | 15:36:20.0 | -0.14 | 37 | 1.49 | Manual |
| RD | FLN | Sg | 15:36:40.90 | 0.03 | 37 | 1.49 | Manual |
| RD | MFF | Pn | 15:36:18.79 | 0.14 | 130 | 1.52 | Manual |
| RD | MFF | Pg | 15:36:20.80 | 0.06 | 130 | 1.52 | Manual |
| RD | MFF | Sg | 15:36:41.70 | -0.2 | 130 | 1.52 | Manual |
| RD | LDF | Pn | 15:36:19.0 | 0.19 | 48 | 1.53 | Manual |
| RD | LDF | Pg | 15:36:20.80 | -0.17 | 48 | 1.53 | Manual |
| RD | LDF | Sg | 15:36:42.60 | 0.31 | 48 | 1.53 | Manual |