This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 3 MLv |
| Local datetime | 1987/03/21 15:47 |
| Universal datetime | 1987/03/21 14:47 |
| Latitude | 50.22 ° ± 4 km |
| Longitude | 3.62 ° ± 3 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 |
|---|---|---|
Valenciennes 
|
17 | 43336 |
| Denain
|
20 | 19825 |
| Caudry
|
18 | 14591 |
| Anzin
|
19 | 13305 |
| Marly
|
15 | 11855 |
| Bruay-sur-l'Escaut
|
21 | 11449 |
| Saint-Saulve
|
18 | 11207 |
| Douchy-les-Mines
|
19 | 10558 |
| Aulnoye-Aymeries
|
15 | 8811 |
| Onnaing
|
19 | 8797 |
| Aulnoy-lez-Valenciennes
|
13 | 7341 |
| Le Cateau-Cambrésis
|
15 | 6933 |
| Beuvrages
|
20 | 6740 |
| Quiévrechain
|
19 | 6366 |
| Trith-Saint-Léger
|
16 | 6215 |
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 | 14 |
| Number of phases used | 9 |
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 | HAU | Pn | 14:48:11.20 | -0.56 | 140 | 2.85 | Manual |
| RD | LDF | Pg | 14:48:21.60 | -0.83 | 238 | 2.93 | Manual |
| RD | LDF | Sg | 14:49:03.60 | 0.58 | 238 | 2.93 | Manual |
| RD | LOR | Pn | 14:48:14.40 | 1.21 | 177 | 2.95 | Manual |
| RD | LOR | Sn | 14:48:50.0 | -1.29 | 177 | 2.95 | Manual |
| RD | LOR | Sg | 14:49:04.30 | 0.53 | 177 | 2.95 | Manual |
| RD | CDF | Pn | 14:48:14.20 | 0.41 | 126 | 3 | Manual |
| RD | FLN | Pg | 14:48:24.50 | 0 | 243 | 3.04 | Manual |
| RD | FLN | Sg | 14:49:06.50 | -0.11 | 243 | 3.04 | Manual |