MARCHE-LES-DAMES (BE)
Known mine explosion2 September 2008
- Magnitude
- 1.1ML
- Depth
- 0.1km ± 8.5
- Belgian time
- 13:47:592008-09-02
- UTC
- 11:47:592008-09-02
Main parameters
| Date and time | 2008-09-02 11:47:59 UTC 2008-09-02 13:47:59 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.494° N, 4.980° E Uncertainty ± 2.9 km |
| Depth of hypocenter | 0.1 ± 8.5 km |
| Event ID | ROB 3722 |
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
- 8
- Epicentral distance
- 14.3 – 66.0km
- Mean velocity, P wave
- 6.1km/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 0.1 km. P wave: 6 measurements, root-mean-square deviation 0.35 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)8 stations | ||||||
| GESGesves | 14.3 | 148 | 11:48:02.25+2.41 s | – | – | – |
| CLAClavier | 24.4 | 110 | 11:48:04.27+4.43 s | – | – | – |
| MRDMaredsous | 26.1 | 215 | 11:48:05.15+5.31 s | – | – | – |
| OT1OT1-Mellery | 31.0 | 292 | – | 11:48:09.59+9.75 s | – | – |
| OT3OT3-Dion-le-Mont | 32.5 | 313 | – | 11:48:09.91+10.07 s | – | – |
| OT5OT5-Genappe | 41.0 | 292 | 11:48:06.86+7.02 s | – | – | – |
| RQRRonquières | 54.9 | 283 | 11:48:09.65+9.81 s | 11:48:15.85+16.01 s | 6.20 | 6.0 |
| SKQSteenkerque | 66.0 | 285 | 11:48:10.76+10.92 s | – | – | – |
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