AYENEUX (BE)
Known mine explosion24 July 2009
- Magnitude
- 1.5ML
- Depth
- 1.0km ± 3.6
- Belgian time
- 16:36:562009-07-24
- UTC
- 14:36:562009-07-24
Main parameters
| Date and time | 2009-07-24 14:36:56 UTC 2009-07-24 16:36:56 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.602° N, 5.721° E Uncertainty ± 1.5 km |
| Depth of hypocenter | 1.0 ± 3.6 km |
| Event ID | ROB 3494 |
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
- 7
- Epicentral distance
- 9.5 – 98.0km
- Mean velocity, P wave
- 6.0km/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 1.0 km. P wave: 7 measurements, root-mean-square deviation 0.36 s. S wave: 4 measurements, root-mean-square deviation 0.46 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 | ||||||
| LCHLa Chartreuse | 9.5 | 295 | 14:36:57.86+1.49 s | 14:36:59.65+3.28 s | 1.79 | – |
| STISart Tilman | 11.3 | 259 | 14:36:57.98+1.61 s | – | – | – |
| MEMSMembach | 20.5 | 88 | 14:36:59.98+3.61 s | – | – | – |
| EBNEben-Emael | 21.9 | 352 | 14:37:00.43+4.06 s | – | – | – |
| ROBRobertville | 32.1 | 121 | 14:37:02.14+5.77 s | 14:37:06.36+9.99 s | 4.22 | – |
| GESGesves | 51.1 | 242 | 14:37:04.51+8.14 s | 14:37:11.99+15.62 s | 7.48 | – |
| DOUDourbes | 98.0 | 235 | 14:37:13.32+16.95 s | 14:37:24.54+28.17 s | 11.22 | 9.4 |