VEZIN (BE)
Known mine explosion11 September 2008
- Magnitude
- 1.7ML
- Depth
- 3.2km ± 6.5
- Belgian time
- 13:48:312008-09-11
- UTC
- 11:48:312008-09-11
Main parameters
| Date and time | 2008-09-11 11:48:31 UTC 2008-09-11 13:48:31 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.508° N, 4.996° E Uncertainty ± 1.4 km |
| Depth of hypocenter | 3.2 ± 6.5 km |
| Event ID | ROB 3698 |
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
- 9
- Epicentral distance
- 15.1 – 75.8km
- Mean velocity, P wave
- 14.4km/s
- Mean velocity, S wave
- 4.4km/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 3.2 km. P wave: 9 measurements, root-mean-square deviation 2.05 s. S wave: 6 measurements, root-mean-square deviation 0.82 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)9 stations | ||||||
| GESGesves | 15.1 | 155 | 11:48:33.30+2.25 s | 11:48:35.63+4.58 s | 2.33 | – |
| GRZGrand Leez | 18.1 | 296 | 11:48:34.14+3.09 s | 11:48:36.66+5.61 s | 2.52 | 152.5 |
| CLAClavier | 23.9 | 114 | 11:48:35.57+4.52 s | – | – | – |
| MRDMaredsous | 28.1 | 215 | 11:48:36.26+5.21 s | 11:48:39.78+8.73 s | 3.52 | 18.8 |
| OT1OT1-Mellery | 31.6 | 288 | 11:48:36.42+5.37 s | 11:48:40.38+9.33 s | 3.96 | 54.5 |
| OT3OT3-Dion-le-Mont | 32.3 | 310 | 11:48:36.77+5.72 s | 11:48:41.09+10.04 s | 4.32 | – |
| SNFSeneffe | 50.5 | 271 | 11:48:38.97+7.92 s | – | – | – |
| DOUDourbes | 54.1 | 212 | 11:48:40.54+9.49 s | 11:48:46.77+15.72 s | 6.23 | – |
| BOUBougnies | 75.8 | 260 | 11:48:34.40+3.35 s | – | – | – |