MARCHE-LES-DAMES (BE)
Known mine explosion28 October 2008
- Magnitude
- 1.0ML
- Depth
- 1.0km ± 5.7
- Belgian time
- 13:52:552008-10-28
- UTC
- 12:52:552008-10-28
Main parameters
| Date and time | 2008-10-28 12:52:55 UTC 2008-10-28 13:52:55 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.501° N, 4.993° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 1.0 ± 5.7 km |
| Event ID | ROB 3821 |
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
- 9
- Epicentral distance
- 14.5 – 91.2km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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 1.0 km. P wave: 9 measurements, root-mean-square deviation 0.46 s. S wave: 4 measurements, root-mean-square deviation 0.50 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)9 stations | ||||||
| GESGesves | 14.5 | 153 | 12:52:57.53+2.18 s | 12:52:59.70+4.35 s | 2.17 | – |
| GRZGrand Leez | 18.2 | 299 | 12:52:58.51+3.16 s | – | – | – |
| CLAClavier | 23.8 | 112 | 12:52:59.46+4.11 s | 12:53:03.42+8.07 s | 3.96 | 12.8 |
| STISart Tilman | 41.5 | 77 | 12:53:02.98+7.63 s | – | – | – |
| OT5OT5-Genappe | 41.6 | 290 | 12:53:02.41+7.06 s | – | – | – |
| RCHRochefort | 41.9 | 156 | 12:53:02.78+7.43 s | 12:53:08.64+13.29 s | 5.86 | – |
| SNFSeneffe | 50.3 | 272 | 12:53:02.84+7.49 s | – | – | – |
| DOUDourbes | 53.3 | 212 | 12:53:04.78+9.43 s | 12:53:11.19+15.84 s | 6.41 | – |
| KLBKalborn | 91.2 | 119 | 12:53:11.22+15.87 s | – | – | – |