REBECQ (BE)
Quarry blast22 March 2019
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:43:552019-03-22
- UTC
- 13:43:552019-03-22
Main parameters
| Date and time | 2019-03-22 13:43:55 UTC 2019-03-22 14:43:55 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.666° N, 4.136° E Uncertainty ± 2.2 km |
| Event ID | ROB 7985 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-03-22 15:08:22 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
- 4.4 – 87.1km
- Mean velocity, P wave
- 6.1km/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: 7 measurements, root-mean-square deviation 0.52 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 | 4.4 | 244 | 13:43:56.79+0.83 s | 13:43:57.40+1.44 s | 0.61 |
| RQRRonquières | 9.2 | 137 | 13:43:58.09+2.13 s | – | – |
| BRQBracquegnies | 20.6 | 180 | 13:44:00.05+4.09 s | – | – |
| UCCBUccle | 21.5 | 47 | 13:44:00.65+4.69 s | 13:44:02.21+6.25 s | 1.56 |
| BOUBougnies | 33.7 | 204 | 13:44:01.96+6.00 s | – | – |
| MRDMaredsous | 60.4 | 132 | 13:44:05.41+9.45 s | 13:44:13.86+17.90 s | 8.45 |
| CLAClavier | 87.1 | 108 | 13:44:11.32+15.36 s | – | – |
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