WELLIN (BE)
Known mine explosion29 October 2008
- Magnitude
- 0.9ML
- Depth
- 4.5km ± 5.6
- Belgian time
- 16:35:222008-10-29
- UTC
- 15:35:222008-10-29
Main parameters
| Date and time | 2008-10-29 15:35:22 UTC 2008-10-29 16:35:22 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.102° N, 5.096° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 4.5 ± 5.6 km |
| Event ID | ROB 3832 |
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
- 5
- Epicentral distance
- 11.1 – 72.5km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.3km/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 0.24 s. S wave: 5 measurements, root-mean-square deviation 0.36 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)5 stations | ||||||
| RCHRochefort | 11.1 | 58 | 15:35:23.94+1.59 s | 15:35:26.01+3.66 s | 2.07 | – |
| GESGesves | 31.5 | 359 | 15:35:27.62+5.27 s | 15:35:32.26+9.91 s | 4.64 | – |
| DOUDourbes | 35.8 | 269 | 15:35:28.29+5.94 s | 15:35:33.35+11.00 s | 5.06 | 10.4 |
| CLAClavier | 38.2 | 23 | 15:35:28.73+6.38 s | 15:35:34.39+12.04 s | 5.66 | 4.1 |
| KLBKalborn | 72.5 | 90 | 15:35:34.80+12.45 s | 15:35:43.64+21.29 s | 8.84 | – |