BRAINE-LE-COMTE (BE)
Quarry blast19 May 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 10:49:562020-05-19
- UTC
- 08:49:562020-05-19
Main parameters
| Date and time | 2020-05-19 08:49:56 UTC 2020-05-19 10:49:56 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.655° N, 4.170° E Uncertainty ± 0.5 km |
| Event ID | ROB 10050 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-20 09:22:21 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
- 5
- Epicentral distance
- 6.4 – 25.5km
- Mean velocity, P wave
- 5.9km/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 0.10 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 | 6.4 | 264 | 08:49:57.34+1.34 s | 08:49:58.12+2.12 s | 0.78 |
| RQRRonquières | 6.7 | 144 | 08:49:57.59+1.59 s | – | – |
| UCCBUccle | 20.7 | 40 | 08:49:59.89+3.89 s | – | – |
| UCCSUccle | 20.7 | 40 | 08:50:00.02+4.02 s | – | – |
| TGATangissart | 25.5 | 102 | 08:50:00.60+4.60 s | 08:50:03.49+7.49 s | 2.89 |
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