CHOKIER (BE)
Known mine explosion4 August 2008
- Magnitude
- 1.5ML
- Depth
- 0.1km ± 31.8
- Belgian time
- 14:01:442008-08-04
- UTC
- 12:01:442008-08-04
Main parameters
| Date and time | 2008-08-04 12:01:44 UTC 2008-08-04 14:01:44 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.572° N, 5.428° E Uncertainty ± 40.3 km |
| Depth of hypocenter | 0.1 ± 31.8 km |
| Event ID | ROB 3132 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2009-05-30 18:17:43 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
- 9.7 – 48.5km
- Mean velocity, P wave
- 2.6km/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 0.1 km. P wave: 5 measurements, root-mean-square deviation 1.64 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 | ||||||
| STISart Tilman | 9.7 | 83 | 12:01:44.66−0.29 s | 12:01:46.75+1.80 s | 2.09 | 45.0 |
| CLAClavier | 19.2 | 208 | 12:01:46.53+1.58 s | 12:01:49.68+4.73 s | 3.15 | 62.0 |
| GESGesves | 31.9 | 229 | 12:01:48.70+3.75 s | 12:01:54.74+9.79 s | 6.04 | 28.6 |
| MEMSMembach | 41.4 | 84 | 12:01:56.62+11.67 s | – | – | – |
| RCHRochefort | 48.5 | 197 | 12:01:58.91+13.96 s | – | – | – |
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