NAMECHE (BE)
Known mine explosion22 October 2008
- Magnitude
- –
- Depth
- 7.3km ± 4.7
- Belgian time
- 13:51:542008-10-22
- UTC
- 11:51:542008-10-22
Main parameters
| Date and time | 2008-10-22 11:51:54 UTC 2008-10-22 13:51:54 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.459° N, 4.997° E Uncertainty ± 3.0 km |
| Depth of hypocenter | 7.3 ± 4.7 km |
| Event ID | ROB 3833 |
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
- 10
- Epicentral distance
- 10.4 – 88.8km
- Mean velocity, P wave
- 4.4km/s
- Mean velocity, S wave
- 2.5km/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 7.3 km. P wave: 10 measurements, root-mean-square deviation 2.39 s. S wave: 5 measurements, root-mean-square deviation 2.58 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)10 stations | |||||
| GESGesves | 10.4 | 142 | 11:51:56.59+2.15 s | 11:51:58.58+4.14 s | 1.99 |
| CLAClavier | 22.1 | 101 | 11:51:58.37+3.93 s | 11:52:02.01+7.57 s | 3.64 |
| RCHRochefort | 37.6 | 154 | 11:52:00.89+6.45 s | – | – |
| DOUDourbes | 49.6 | 215 | 11:52:02.91+8.47 s | 11:52:10.52+16.08 s | 7.61 |
| SNFSeneffe | 50.9 | 277 | 11:52:03.79+9.35 s | – | – |
| RQRRonquières | 57.1 | 287 | 11:52:03.85+9.41 s | – | – |
| SKQSteenkerque | 68.3 | 288 | 11:52:08.16+13.72 s | – | – |
| MEMSMembach | 73.8 | 77 | 11:52:08.21+13.77 s | 11:52:19.10+24.66 s | 10.89 |
| BOUBougnies | 75.1 | 264 | 11:52:16.51+22.07 s | 11:52:27.05+32.61 s | 10.54 |
| KLBKalborn | 88.8 | 116 | 11:52:10.89+16.45 s | – | – |