JEMELLE (BE)
Known mine explosion14 August 2008
- Magnitude
- 1.8ML
- Depth
- 2.0km ± 1.6
- Belgian time
- 12:24:552008-08-14
- UTC
- 10:24:552008-08-14
Main parameters
| Date and time | 2008-08-14 10:24:55 UTC 2008-08-14 12:24:55 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.174° N, 5.253° E Uncertainty ± 0.9 km |
| Depth of hypocenter | 2.0 ± 1.6 km |
| Event ID | ROB 3145 |
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
- 2.8 – 72.4km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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 2.0 km. P wave: 6 measurements, root-mean-square deviation 0.16 s. S wave: 5 measurements, root-mean-square deviation 0.13 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 | 222 | 10:24:55.93+0.41 s | 10:24:56.62+1.10 s | 0.69 | – |
| GESGesves | 26.3 | 333 | 10:24:59.98+4.46 s | 10:25:03.65+8.13 s | 3.67 | 67.0 |
| CLAClavier | 27.5 | 7 | 10:24:59.98+4.46 s | 10:25:03.90+8.38 s | 3.92 | 101.0 |
| DOUDourbes | 47.9 | 260 | 10:25:03.77+8.25 s | 10:25:09.90+14.38 s | 6.13 | 21.2 |
| KLBKalborn | 61.7 | 97 | 10:25:06.09+10.57 s | 10:25:13.88+18.36 s | 7.79 | 26.3 |
| MEMSMembach | 72.4 | 48 | 10:25:07.59+12.07 s | – | – | – |