REBECQ (BE)
Quarry blast21 February 2019
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 15:05:362019-02-21
- UTC
- 14:05:362019-02-21
Main parameters
| Date and time | 2019-02-21 14:05:36 UTC 2019-02-21 15:05:36 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.666° N, 4.159° E Uncertainty ± 0.9 km |
| Event ID | ROB 7840 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-02-22 10:34:09 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
- 6
- Epicentral distance
- 5.9 – 70.7km
- Mean velocity, P wave
- 6.4km/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: 6 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | |||||
| SKQSteenkerque | 5.9 | 251 | 14:05:37.64+1.55 s | 14:05:38.17+2.08 s | 0.53 |
| RQRRonquières | 8.2 | 145 | 14:05:38.05+1.96 s | 14:05:39.53+3.44 s | 1.48 |
| UCCBUccle | 20.3 | 44 | 14:05:40.32+4.23 s | 14:05:42.27+6.18 s | 1.95 |
| BOUBougnies | 34.4 | 206 | 14:05:41.88+5.79 s | – | – |
| MRDMaredsous | 59.3 | 133 | 14:05:46.26+10.17 s | – | – |
| DOUDourbes | 70.7 | 154 | 14:05:47.71+11.62 s | – | – |
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