This event was reviewed by an analyst and confirmed.
| Type | Earthquake |
| Magnitude | 3 MLv |
| Local datetime | 1981/02/23 03:51 |
| Universal datetime | 1981/02/23 02:51 |
| Latitude | 49.99 ° ± 6 km |
| Longitude | 4.00 ° ± 7 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 |
|---|---|---|
Mons 
|
51 | 91277 |
Maubeuge 
|
33 | 29944 |
| Caudry
|
44 | 14591 |
| Hautmont
|
29 | 14574 |
| Fourmies
|
5 | 11727 |
| Jeumont
|
34 | 10159 |
| Hirson
|
9 | 8813 |
| Aulnoye-Aymeries
|
27 | 8811 |
| Aulnoy-lez-Valenciennes
|
50 | 7341 |
| Le Cateau-Cambrésis
|
35 | 6933 |
| Feignies
|
35 | 6881 |
| Louvroil
|
30 | 6481 |
| Revin
|
50 | 6239 |
| Bohain-en-Vermandois
|
38 | 5664 |
| Ferrière-la-Grande
|
28 | 5301 |
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 | 22 |
| 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 | Pg | 02:52:17.29 | -1.46 | 141 | 2.52 | Manual |
| RD | HAU | Sn | 02:52:44.30 | -0.06 | 141 | 2.52 | Manual |
| RD | HAU | Sg | 02:52:53.90 | 0.31 | 141 | 2.52 | Manual |
| RD | CDF | Pn | 02:52:14.50 | 1.08 | 125 | 2.67 | Manual |
| RD | CDF | Pg | 02:52:20.70 | -0.87 | 125 | 2.67 | Manual |
| RD | LOR | Pn | 02:52:14.50 | 0.31 | 182 | 2.72 | Manual |
| RD | LOR | Sn | 02:52:49.60 | 0.01 | 182 | 2.72 | Manual |
| FR | ECH | Pn | 02:52:14.50 | 0.21 | 129 | 2.73 | Manual |
| FR | ECH | Sg | 02:53:01.0 | 0.41 | 129 | 2.73 | Manual |