FRANC-WARET (BE)
Known mine explosion17 September 2008
- Magnitude
- 1.6ML
- Depth
- 1.0km ± 4.8
- Belgian time
- 13:53:092008-09-17
- UTC
- 11:53:092008-09-17
Main parameters
| Date and time | 2008-09-17 11:53:09 UTC 2008-09-17 13:53:09 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.522° N, 4.966° E Uncertainty ± 2.0 km |
| Depth of hypocenter | 1.0 ± 4.8 km |
| Event ID | ROB 3689 |
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
- 10
- Epicentral distance
- 17.5 – 93.9km
- Mean velocity, P wave
- 5.5km/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: 10 measurements, root-mean-square deviation 0.33 s. S wave: 5 measurements, root-mean-square deviation 0.38 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)10 stations | ||||||
| GESGesves | 17.5 | 151 | 11:53:11.88+2.34 s | 11:53:14.07+4.53 s | 2.19 | – |
| CLAClavier | 26.4 | 116 | 11:53:14.01+4.47 s | 11:53:17.66+8.12 s | 3.65 | 21.0 |
| MRDMaredsous | 28.2 | 210 | 11:53:14.65+5.11 s | 11:53:18.16+8.62 s | 3.51 | – |
| OT1OT1-Mellery | 29.1 | 287 | 11:53:14.05+4.51 s | – | – | – |
| OT5OT5-Genappe | 39.1 | 288 | 11:53:16.77+7.23 s | – | – | – |
| RCHRochefort | 44.8 | 155 | 11:53:17.14+7.60 s | 11:53:22.99+13.45 s | 5.85 | – |
| SNFSeneffe | 48.4 | 269 | 11:53:18.22+8.68 s | – | – | – |
| DOUDourbes | 54.4 | 209 | 11:53:19.41+9.87 s | 11:53:25.29+15.75 s | 5.88 | 47.8 |
| SKQSteenkerque | 64.4 | 283 | 11:53:20.68+11.14 s | – | – | – |
| KLBKalborn | 93.9 | 120 | 11:53:26.00+16.46 s | – | – | – |