MARCHE-LES-DAMES (BE)
Known mine explosion29 February 2012
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:16:562012-02-29
- UTC
- 13:16:562012-02-29
Main parameters
| Date and time | 2012-02-29 13:16:56 UTC 2012-02-29 14:16:56 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.513° N, 4.997° E Uncertainty ± 2.4 km |
| Event ID | ROB 4655 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-04-27 16:39:30 Belgian time
Location map
- Epicentre
- Station that recorded the event
Arrival times at the stations
Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.
- Stations
- 6
- Epicentral distance
- 15.6 – 54.6km
- Mean velocity, P wave
- 6.1km/s
- P wave
- S wave
- Curve fitted to the measurements
Notes and method
Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 6 measurements, root-mean-square deviation 0.30 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | |||||
| GESGesves | 15.6 | 156 | 13:16:58.91+2.74 s | – | – |
| CLAClavier | 24.1 | 116 | 13:17:00.82+4.65 s | – | – |
| MRDMaredsous | 28.6 | 215 | 13:17:01.21+5.04 s | 13:17:04.92+8.75 s | 3.71 |
| CSECourt-Saint-Etienne | 31.5 | 289 | 13:17:01.90+5.73 s | – | – |
| RCHRochefort | 43.1 | 158 | 13:17:04.16+7.99 s | – | – |
| DOUDourbes | 54.6 | 212 | 13:17:05.18+9.01 s | – | – |
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