DOCHAMPS (BE)
Known mine explosion30 March 2011
- Magnitude
- 2.0ML
- Depth
- 1.0km ± 5.1
- Belgian time
- 13:12:082011-03-30
- UTC
- 11:12:082011-03-30
Main parameters
| Date and time | 2011-03-30 11:12:08 UTC 2011-03-30 13:12:08 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.211° N, 5.608° E Uncertainty ± 3.1 km |
| Depth of hypocenter | 1.0 ± 5.1 km |
| Event ID | ROB 4505 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-04-27 16:33:58 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
- 8
- Epicentral distance
- 31.8 – 119.0km
- Mean velocity, P wave
- 6.3km/s
- Mean velocity, S wave
- 3.4km/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. Hypocenter at a depth of 1.0 km. P wave: 8 measurements, root-mean-square deviation 0.51 s. S wave: 7 measurements, root-mean-square deviation 0.55 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)8 stations | ||||||
| CLAClavier | 31.8 | 317 | 11:12:14.46+5.94 s | 11:12:18.70+10.18 s | 4.24 | 97.9 |
| GESGesves | 41.9 | 298 | 11:12:15.99+7.47 s | 11:12:21.88+13.36 s | 5.89 | – |
| LCHLa Chartreuse | 47.7 | 359 | 11:12:16.39+7.87 s | 11:12:23.73+15.21 s | 7.34 | – |
| MEMSMembach | 52.8 | 33 | 11:12:18.27+9.75 s | 11:12:24.06+15.54 s | 5.79 | – |
| MRDMaredsous | 60.7 | 280 | 11:12:18.89+10.37 s | 11:12:26.94+18.42 s | 8.05 | – |
| DOUDourbes | 73.5 | 260 | 11:12:20.95+12.43 s | 11:12:29.62+21.10 s | 8.67 | – |
| RQRRonquières | 107.7 | 295 | 11:12:25.51+16.99 s | – | – | – |
| SKQSteenkerque | 119.0 | 295 | 11:12:29.01+20.49 s | 11:12:44.31+35.79 s | 15.30 | – |