MARCHE-LES-DAMES (BE)
Known mine explosion7 July 2008
- Magnitude
- 1.1ML
- Depth
- 2.2km ± 16.7
- Belgian time
- 13:59:262008-07-07
- UTC
- 11:59:262008-07-07
Main parameters
| Date and time | 2008-07-07 11:59:26 UTC 2008-07-07 13:59:26 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.495° N, 4.966° E Uncertainty ± 3.5 km |
| Depth of hypocenter | 2.2 ± 16.7 km |
| Event ID | ROB 3156 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2009-08-19 14:37:52 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
- 15.0 – 51.8km
- Mean velocity, P wave
- 5.8km/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 2.2 km. P wave: 5 measurements, root-mean-square deviation 0.20 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 | ||||||
| GESGesves | 15.0 | 145 | – | 11:59:29.41+2.44 s | – | 21.0 |
| CLAClavier | 25.3 | 109 | 11:59:31.27+4.30 s | 11:59:34.88+7.91 s | 3.61 | 14.3 |
| MRDMaredsous | 25.7 | 213 | 11:59:31.74+4.77 s | – | – | – |
| RCHRochefort | 42.2 | 154 | 11:59:34.49+7.52 s | 11:59:39.67+12.70 s | 5.18 | – |
| SNFSeneffe | 48.4 | 272 | 11:59:35.16+8.19 s | – | – | – |
| DOUDourbes | 51.8 | 211 | 11:59:36.20+9.23 s | – | – | – |
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