LENS (BE)
Known mine explosion10 April 2013
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 12:52:272013-04-10
- UTC
- 10:52:272013-04-10
Main parameters
| Date and time | 2013-04-10 10:52:27 UTC 2013-04-10 12:52:27 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.650° N, 4.081° E Uncertainty ± 11.6 km |
| Event ID | ROB 4842 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-04-10 13:31:30 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
- 0.2 – 30.6km
- Mean velocity, P wave
- 14.4km/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 1.16 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 | |||||
| SKQSteenkerque | 0.2 | 212 | 10:52:28.64+1.21 s | 10:52:29.43+2.00 s | 0.79 |
| RQRRonquières | 11.3 | 116 | 10:52:29.56+2.13 s | 10:52:31.37+3.94 s | 1.81 |
| SNFSeneffe | 21.1 | 137 | 10:52:30.78+3.35 s | – | – |
| UCCBUccle | 25.6 | 50 | 10:52:32.57+5.14 s | – | – |
| BOUBougnies | 30.6 | 198 | 10:52:29.34+1.91 s | – | – |
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