PETIT-ENGHIEN (BE)
Known mine explosion27 October 2008
- Magnitude
- 1.9ML
- Depth
- 1.3km ± 9.8
- Belgian time
- 13:08:002008-10-27
- UTC
- 12:08:002008-10-27
Main parameters
| Date and time | 2008-10-27 12:08:00 UTC 2008-10-27 13:08:00 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.685° N, 4.095° E Uncertainty ± 4.9 km |
| Depth of hypocenter | 1.3 ± 9.8 km |
| Event ID | ROB 3822 |
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
- 4
- Epicentral distance
- 18.0 – 33.0km
- Mean velocity, P wave
- 5.3km/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 1.3 km. P wave: 4 measurements, root-mean-square deviation 0.61 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)4 stations | ||||||
| LESLessines | 18.0 | 279 | 12:08:03.90+3.42 s | 12:08:05.80+5.32 s | 1.90 | – |
| BRQBracquegnies | 22.9 | 173 | 12:08:03.19+2.71 s | – | – | – |
| SNFSeneffe | 23.6 | 145 | 12:08:04.23+3.75 s | 12:08:07.89+7.41 s | 3.66 | 40.9 |
| OTTOttignies | 33.0 | 95 | 12:08:06.39+5.91 s | – | – | – |
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