MARCHE-LES-DAMES (BE)
Known mine explosion1 September 2008
- Magnitude
- 1.4ML
- Depth
- 1.0km ± 8.6
- Belgian time
- 14:14:542008-09-01
- UTC
- 12:14:542008-09-01
Main parameters
| Date and time | 2008-09-01 12:14:54 UTC 2008-09-01 14:14:54 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.495° N, 4.978° E Uncertainty ± 3.2 km |
| Depth of hypocenter | 1.0 ± 8.6 km |
| Event ID | ROB 3566 |
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
- 18
- Epicentral distance
- 14.5 – 107.3km
- Mean velocity, P wave
- 4.0km/s
- Mean velocity, S wave
- 2.8km/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 1.0 km. P wave: 18 measurements, root-mean-square deviation 2.67 s. S wave: 16 measurements, root-mean-square deviation 1.94 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)18 stations | ||||||
| GESGesves | 14.5 | 148 | 12:14:56.05+1.20 s | 12:14:58.31+3.46 s | 2.26 | 64.5 |
| GRZGrand Leez | 17.6 | 302 | 12:14:57.05+2.20 s | 12:14:59.99+5.14 s | 2.94 | 107.5 |
| CLAClavier | 24.5 | 110 | 12:14:57.98+3.13 s | 12:15:02.02+7.17 s | 4.04 | 11.4 |
| MRDMaredsous | 26.1 | 215 | 12:14:59.12+4.27 s | 12:15:02.94+8.09 s | 3.82 | 34.5 |
| OT3OT3-Dion-le-Mont | 32.3 | 313 | 12:14:59.73+4.88 s | 12:15:03.90+9.05 s | 4.17 | – |
| OTTOttignies | 34.8 | 302 | 12:14:59.77+4.92 s | 12:15:04.32+9.47 s | 4.55 | 59.0 |
| OT5OT5-Genappe | 40.8 | 291 | 12:15:05.54+10.69 s | 12:15:07.37+12.52 s | 1.83 | 87.0 |
| RCHRochefort | 41.8 | 155 | 12:15:01.22+6.37 s | 12:15:07.19+12.34 s | 5.97 | – |
| STISart Tilman | 42.7 | 77 | 12:15:01.35+6.50 s | 12:15:07.58+12.73 s | 6.23 | 6.0 |
| LCHLa Chartreuse | 46.8 | 70 | 12:15:04.57+9.72 s | 12:15:11.57+16.72 s | 7.00 | 38.7 |
| DOUDourbes | 52.2 | 212 | 12:15:03.38+8.53 s | 12:15:09.67+14.82 s | 6.29 | 7.0 |
| RQRRonquières | 54.8 | 283 | 12:15:02.96+8.11 s | 12:15:09.56+14.71 s | 6.60 | 6.6 |
| SKQSteenkerque | 65.9 | 285 | 12:15:04.65+9.80 s | – | – | – |
| MEMSMembach | 74.2 | 80 | 12:15:07.69+12.84 s | – | – | – |
| BOUBougnies | 74.3 | 261 | 12:15:15.81+20.96 s | 12:15:22.46+27.61 s | 6.65 | 9.1 |
| ROBRobertville | 80.4 | 93 | 12:15:08.54+13.69 s | 12:15:16.02+21.17 s | 7.48 | 2.3 |
| KLBKalborn | 91.8 | 118 | 12:15:17.69+22.84 s | 12:15:25.89+31.04 s | 8.20 | 5.9 |
| VIAVianden | 107.3 | 125 | 12:15:24.33+29.48 s | 12:15:28.98+34.13 s | 4.65 | 6.5 |