REBECQ (BE)
Quarry blast7 May 2019
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 11:26:232019-05-07
- UTC
- 09:26:232019-05-07
Main parameters
| Date and time | 2019-05-07 09:26:23 UTC 2019-05-07 11:26:23 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.699° N, 4.122° E Uncertainty ± 5.7 km |
| Event ID | ROB 8120 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-05-07 15:17:21 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
- 6.3 – 89.2km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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: 7 measurements, root-mean-square deviation 0.43 s. S wave: 6 measurements, root-mean-square deviation 0.75 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 | 6.3 | 208 | 09:26:24.89+1.36 s | 09:26:25.68+2.15 s | 0.79 |
| RQRRonquières | 12.6 | 145 | 09:26:25.27+1.74 s | – | – |
| UCCBUccle | 20.1 | 57 | 09:26:27.69+4.16 s | 09:26:29.82+6.29 s | 2.13 |
| MRDMaredsous | 63.6 | 134 | 09:26:34.08+10.55 s | 09:26:41.28+17.75 s | 7.20 |
| DOUDourbes | 75.1 | 153 | 09:26:37.12+13.59 s | 09:26:47.26+23.73 s | 10.14 |
| GESGesves | 76.8 | 117 | 09:26:36.88+13.35 s | 09:26:46.58+23.05 s | 9.70 |
| CLAClavier | 89.2 | 110 | 09:26:38.73+15.20 s | 09:26:50.24+26.71 s | 11.51 |