BELGIUM (BE)
Known mine explosion14 April 2011
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:52:412011-04-14
- UTC
- 12:52:412011-04-14
Main parameters
| Date and time | 2011-04-14 12:52:41 UTC 2011-04-14 14:52:41 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.153° N, 5.119° E Uncertainty ± 11.1 km |
| Event ID | ROB 4510 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2011-05-21 22:23:44 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
- 5
- Epicentral distance
- 7.8 – 92.2km
- Mean velocity, P wave
- 7.4km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 5 measurements, root-mean-square deviation 0.96 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)5 stations | |||||
| RCHRochefort | 7.8 | 88 | 12:52:44.38+2.39 s | – | – |
| CLAClavier | 32.4 | 24 | 12:52:49.04+7.05 s | – | – |
| DOUH1Dourbes | 38.0 | 260 | 12:52:49.31+7.32 s | – | – |
| MEMH1Membach | 81.2 | 51 | 12:52:56.38+14.39 s | – | – |
| SKQSteenkerque | 92.2 | 307 | 12:52:55.15+13.16 s | – | – |
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