MARCHE-LES-DAMES (BE)
Known mine explosion25 September 2008
- Magnitude
- –
- Depth
- 1.0km ± 0.5
- Belgian time
- 12:38:502008-09-25
- UTC
- 10:38:502008-09-25
Main parameters
| Date and time | 2008-09-25 10:38:50 UTC 2008-09-25 12:38:50 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.497° N, 4.953° E Uncertainty ± 3.6 km |
| Depth of hypocenter | 1.0 ± 0.5 km |
| Event ID | ROB 3765 |
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
- 6
- Epicentral distance
- 15.6 – 51.5km
- Mean velocity, P wave
- 5.6km/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: 6 measurements, root-mean-square deviation 0.33 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | |||||
| GESGesves | 15.6 | 143 | 10:38:53.31+2.64 s | – | – |
| MRDMaredsous | 25.3 | 211 | 10:38:55.14+4.47 s | – | – |
| CLAClavier | 26.2 | 109 | 10:38:55.56+4.89 s | – | – |
| OTTOttignies | 33.2 | 303 | 10:38:55.97+5.30 s | – | – |
| OT5OT5-Genappe | 39.1 | 292 | 10:38:58.06+7.39 s | – | – |
| DOUDourbes | 51.5 | 210 | 10:38:59.60+8.93 s | – | – |
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