JEMELLE (BE)
Known mine explosion20 August 2008
- Magnitude
- 1.6ML
- Depth
- 1.2km ± 1.8
- Belgian time
- 12:07:202008-08-20
- UTC
- 10:07:202008-08-20
Main parameters
| Date and time | 2008-08-20 10:07:20 UTC 2008-08-20 12:07:20 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.175° N, 5.251° E Uncertainty ± 0.8 km |
| Depth of hypocenter | 1.2 ± 1.8 km |
| Event ID | ROB 3148 |
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
- 2.8 – 61.9km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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 1.2 km. P wave: 5 measurements, root-mean-square deviation 0.09 s. S wave: 4 measurements, root-mean-square deviation 0.18 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 | 2.8 | 218 | 10:07:21.11+0.43 s | – | – | – |
| GESGesves | 26.1 | 333 | 10:07:25.15+4.47 s | 10:07:28.83+8.15 s | 3.68 | 60.0 |
| CLAClavier | 27.3 | 8 | 10:07:25.34+4.66 s | 10:07:28.80+8.12 s | 3.46 | – |
| DOUDourbes | 47.8 | 259 | 10:07:29.00+8.32 s | 10:07:34.86+14.18 s | 5.86 | 14.0 |
| KLBKalborn | 61.9 | 97 | 10:07:31.23+10.55 s | 10:07:39.06+18.38 s | 7.83 | 24.3 |