MERLEMONT (BE)
Known mine explosion16 September 2008
- Magnitude
- 1.4ML
- Depth
- 2.4km ± 4.3
- Belgian time
- 15:46:552008-09-16
- UTC
- 13:46:552008-09-16
Main parameters
| Date and time | 2008-09-16 13:46:55 UTC 2008-09-16 15:46:55 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.178° N, 4.612° E Uncertainty ± 1.9 km |
| Depth of hypocenter | 2.4 ± 4.3 km |
| Event ID | ROB 3723 |
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
- 4
- Epicentral distance
- 9.3 – 44.0km
- 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 2.4 km. P wave: 4 measurements, root-mean-square deviation 0.21 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)4 stations | ||||||
| DOUDourbes | 9.3 | 188 | 13:46:57.46+1.86 s | – | – | – |
| MRDMaredsous | 17.7 | 39 | 13:46:58.55+2.95 s | 13:47:01.11+5.51 s | 2.56 | 46.7 |
| GESGesves | 40.9 | 56 | 13:47:03.04+7.44 s | 13:47:07.57+11.97 s | 4.53 | 15.4 |
| RCHRochefort | 44.0 | 93 | 13:47:03.12+7.52 s | 13:47:08.56+12.96 s | 5.44 | – |
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