JEMELLE (BE)
Known mine explosion20 November 2008
- Magnitude
- 1.6ML
- Depth
- 1.7km ± 1.9
- Belgian time
- 12:04:592008-11-20
- UTC
- 11:04:592008-11-20
Main parameters
| Date and time | 2008-11-20 11:04:59 UTC 2008-11-20 12:04:59 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.174° N, 5.253° E Uncertainty ± 1.1 km |
| Depth of hypocenter | 1.7 ± 1.9 km |
| Event ID | ROB 3933 |
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
- 6
- Epicentral distance
- 2.8 – 61.8km
- Mean velocity, P wave
- 5.0km/s
- Mean velocity, S wave
- 2.8km/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 1.7 km. P wave: 6 measurements, root-mean-square deviation 1.60 s. S wave: 4 measurements, root-mean-square deviation 1.81 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 | ||||||
| RCHRochefort | 2.8 | 221 | 11:05:00.26+0.30 s | 11:05:01.09+1.13 s | 0.83 | – |
| GESGesves | 26.3 | 333 | 11:05:04.43+4.47 s | – | – | – |
| CLAClavier | 27.5 | 7 | 11:05:04.71+4.75 s | 11:05:08.34+8.38 s | 3.63 | – |
| MRDMaredsous | 37.4 | 293 | 11:05:10.61+10.65 s | – | – | – |
| DOUDourbes | 47.8 | 260 | 11:05:08.27+8.31 s | 11:05:14.18+14.22 s | 5.91 | 23.0 |
| KLBKalborn | 61.8 | 97 | 11:05:10.60+10.64 s | 11:05:24.00+24.04 s | 13.40 | – |