SAINT-HADELIN (BE)
Known mine explosion27 June 2012
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 17:31:402012-06-27
- UTC
- 15:31:402012-06-27
Main parameters
| Date and time | 2012-06-27 15:31:40 UTC 2012-06-27 17:31:40 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.593° N, 5.710° E Uncertainty ± 1.3 km |
| Event ID | ROB 4749 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-07-23 15:52:22 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
- 9
- Epicentral distance
- 9.4 – 108.1km
- Mean velocity, P wave
- 5.4km/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: 9 measurements, root-mean-square deviation 0.37 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)8 stations | |||||
| LCHLa Chartreuse | 9.4 | 303 | 15:31:42.52+1.83 s | – | – |
| STISart Tilman | 10.4 | 264 | 15:31:42.69+2.00 s | – | – |
| MEMHMembach | 21.3 | 85 | 15:31:44.49+3.80 s | 15:31:47.06+6.37 s | 2.57 |
| EBNEben-Emael | 22.8 | 354 | 15:31:44.92+4.23 s | – | – |
| CLAClavier | 34.9 | 236 | 15:31:47.18+6.49 s | – | – |
| GESGesves | 49.9 | 243 | 15:31:49.50+8.81 s | – | – |
| RCHRochefort | 59.7 | 215 | 15:31:50.77+10.08 s | – | – |
| WLFWalferdange | 108.1 | 163 | 15:32:01.07+20.38 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 24.6 | 39 | 15:31:45.39+4.70 s | – | – |
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