NAMUR (BE)
Known mine explosion8 October 2013
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 14:18:462013-10-08
- UTC
- 12:18:462013-10-08
Main parameters
| Date and time | 2013-10-08 12:18:46 UTC 2013-10-08 14:18:46 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.439° N, 4.899° E Uncertainty ± 6.8 km |
| Event ID | ROB 4982 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-10-08 18:39:47 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
- 28.7 – 79.2km
- Mean velocity, P wave
- 5.6km/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 0.10 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 | |||||
| CLAClavier | 28.7 | 94 | 12:18:51.33+4.94 s | – | – |
| RCHRochefort | 39.3 | 143 | 12:18:53.22+6.83 s | – | – |
| STISart Tilman | 49.8 | 71 | 12:18:55.29+8.90 s | – | – |
| SKQSteenkerque | 62.6 | 292 | 12:18:57.26+10.87 s | – | – |
| HOUHouvegnez | 79.2 | 96 | 12:19:00.36+13.97 s | – | – |
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