REBECQ (BE)
Known mine explosion17 October 2012
- Magnitude
- 2.1ML
- Depth
- –
- Belgian time
- 12:32:572012-10-17
- UTC
- 10:32:572012-10-17
Main parameters
| Date and time | 2012-10-17 10:32:57 UTC 2012-10-17 12:32:57 Belgian time |
|---|---|
| Magnitude | ML 2.1 |
| Epicentral coordinates | 50.680° N, 4.168° E Uncertainty ± 3.5 km |
| Event ID | ROB 4784 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-10-17 16:22:52 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
- 5
- Epicentral distance
- 7.1 – 102.6km
- Mean velocity, P wave
- 5.6km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 5 measurements, root-mean-square deviation 0.52 s. S wave: 4 measurements, root-mean-square deviation 0.15 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)5 stations | |||||
| SKQSteenkerque | 7.1 | 241 | 10:32:58.57+0.88 s | 10:32:59.33+1.64 s | 0.76 |
| RQRRonquières | 9.2 | 154 | 10:32:58.90+1.21 s | 10:33:00.15+2.46 s | 1.25 |
| MN7Mons - Maison de l'entreprise | 29.8 | 215 | 10:33:02.87+5.18 s | 10:33:05.92+8.23 s | 3.05 |
| MN2Mons - Cité administrative | 29.8 | 213 | 10:33:01.43+3.74 s | 10:33:05.87+8.18 s | 4.44 |
| ZEVZevekote | 102.6 | 300 | 10:33:15.68+17.99 s | – | – |