SOIGNIES (BE)
Quarry blast31 March 2017
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:05:332017-03-31
- UTC
- 12:05:332017-03-31
Main parameters
| Date and time | 2017-03-31 12:05:33 UTC 2017-03-31 14:05:33 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.568° N, 4.030° E Uncertainty ± 3.7 km |
| Event ID | ROB 5664 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-03-31 16:13:00 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
- 7
- Epicentral distance
- 9.7 – 60.2km
- Mean velocity, P wave
- 5.1km/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: 6 measurements, root-mean-square deviation 0.18 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)7 stations | |||||
| SKQSteenkerque | 9.7 | 21 | 12:05:34.74+1.29 s | 12:05:36.08+2.63 s | 1.34 |
| BRQBracquegnies | 12.2 | 142 | 12:05:35.42+1.97 s | – | – |
| RQRRonquières | 14.4 | 73 | 12:05:35.38+1.93 s | – | – |
| SNFSeneffe | 19.0 | 109 | 12:05:36.42+2.97 s | – | – |
| LESLessines | 20.8 | 320 | – | 12:05:39.14+5.69 s | – |
| BOUBougnies | 20.8 | 197 | 12:05:37.15+3.70 s | – | – |
| MRDMaredsous | 60.2 | 119 | 12:05:44.54+11.09 s | 12:05:51.13+17.68 s | 6.59 |
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