NAMECHE (BE)
Known mine explosion6 November 2008
- Magnitude
- 1.7ML
- Depth
- 4.5km ± 7.0
- Belgian time
- 14:11:232008-11-06
- UTC
- 13:11:232008-11-06
Main parameters
| Date and time | 2008-11-06 13:11:23 UTC 2008-11-06 14:11:23 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.472° N, 4.988° E Uncertainty ± 2.0 km |
| Depth of hypocenter | 4.5 ± 7.0 km |
| Event ID | ROB 3925 |
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
- 6
- Epicentral distance
- 11.9 – 74.0km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.2km/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 4.5 km. P wave: 5 measurements, root-mean-square deviation 0.27 s. S wave: 6 measurements, root-mean-square deviation 0.43 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)6 stations | ||||||
| GESGesves | 11.9 | 144 | 13:11:25.18+1.41 s | 13:11:27.37+3.60 s | 2.19 | 220.0 |
| CLAClavier | 23.0 | 105 | 13:11:27.41+3.64 s | 13:11:31.20+7.43 s | 3.79 | 8.1 |
| RCHRochefort | 39.1 | 154 | 13:11:30.27+6.50 s | 13:11:36.48+12.71 s | 6.21 | – |
| SNFSeneffe | 50.2 | 275 | – | 13:11:38.61+14.84 s | – | 8.0 |
| DOUDourbes | 50.4 | 214 | 13:11:32.48+8.71 s | 13:11:38.96+15.19 s | 6.48 | – |
| MEMSMembach | 74.0 | 78 | 13:11:36.12+12.35 s | 13:11:46.36+22.59 s | 10.24 | 222.0 |