CHOKIER (BE)
Suspected mine explosion28 February 2008
- Magnitude
- 1.0ML
- Depth
- 1.0km
- Belgian time
- 03:30:202008-02-28
- UTC
- 02:30:202008-02-28
Main parameters
| Date and time | 2008-02-28 02:30:20 UTC 2008-02-28 03:30:20 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.569° N, 5.452° E Uncertainty ± 4.5 km |
| Depth of hypocenter | 1.0 km |
| Event ID | ROB 3002 |
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
- 6
- Epicentral distance
- 8.1 – 80.6km
- Mean velocity, P wave
- 5.2km/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 1.0 km. P wave: 6 measurements, root-mean-square deviation 0.58 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | ||||||
| STISart Tilman | 8.1 | 79 | 02:30:21.34+0.90 s | – | – | – |
| LCHLa Chartreuse | 13.0 | 53 | 02:30:22.44+2.00 s | 02:30:25.59+5.15 s | 3.15 | 21.5 |
| CLAClavier | 19.8 | 213 | 02:30:23.06+2.62 s | – | – | – |
| GESGesves | 33.0 | 232 | 02:30:25.47+5.03 s | 02:30:31.00+10.56 s | 5.53 | – |
| KLBKalborn | 70.0 | 138 | 02:30:32.23+11.79 s | 02:30:41.09+20.65 s | 8.86 | – |
| DOUDourbes | 80.6 | 230 | 02:30:36.02+15.58 s | – | – | – |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry