REBECQ (BE)
Quarry blast19 March 2020
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 13:59:552020-03-19
- UTC
- 12:59:552020-03-19
Main parameters
| Date and time | 2020-03-19 12:59:55 UTC 2020-03-19 13:59:55 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.650° N, 4.150° E Uncertainty ± 0.6 km |
| Event ID | ROB 9535 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-19 15:33:28 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
- 4.9 – 22.1km
- Mean velocity, P wave
- 7.0km/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 0.22 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 | |||||
| SKQSteenkerque | 4.9 | 268 | 12:59:56.42+1.42 s | 12:59:56.78+1.78 s | 0.36 |
| RQRRonquières | 7.3 | 133 | 12:59:56.82+1.82 s | – | – |
| BRQBracquegnies | 18.8 | 183 | 12:59:57.99+2.99 s | – | – |
| UCCSUccle | 22.1 | 42 | 12:59:58.91+3.91 s | – | – |
| UCCBUccle | 22.1 | 42 | 12:59:59.10+4.10 s | – | – |
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