ROCHEFORT (BE)
Known mine explosion6 August 2008
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 12:03:262008-08-06
- UTC
- 10:03:262008-08-06
Main parameters
| Date and time | 2008-08-06 10:03:26 UTC 2008-08-06 12:03:26 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.176° N, 5.247° E Uncertainty ± 1.5 km |
| Event ID | ROB 3103 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2010-02-26 10:33:19 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
- 7
- Epicentral distance
- 2.7 – 72.6km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.5km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 7 measurements, root-mean-square deviation 1.51 s. S wave: 6 measurements, root-mean-square deviation 0.17 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)7 stations | ||||||
| RCHRochefort | 2.7 | 211 | 10:03:26.42+0.37 s | 10:03:27.11+1.06 s | 0.69 | – |
| GESGesves | 25.9 | 334 | 10:03:30.54+4.49 s | 10:03:33.98+7.93 s | 3.44 | 97.0 |
| CLAClavier | 27.3 | 8 | 10:03:30.80+4.75 s | 10:03:34.63+8.58 s | 3.83 | 83.0 |
| MRDMaredsous | 36.9 | 292 | 10:03:36.64+10.59 s | – | – | – |
| DOUDourbes | 47.5 | 259 | 10:03:34.17+8.12 s | 10:03:40.26+14.21 s | 6.09 | 29.5 |
| KLBKalborn | 62.2 | 97 | 10:03:36.54+10.49 s | 10:03:44.79+18.74 s | 8.25 | 35.2 |
| MEMSMembach | 72.6 | 48 | 10:03:38.32+12.27 s | 10:03:47.49+21.44 s | 9.17 | 16.9 |