REBECQ (BE)
Quarry blast6 August 2020
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 13:29:352020-08-06
- UTC
- 11:29:352020-08-06
Main parameters
| Date and time | 2020-08-06 11:29:35 UTC 2020-08-06 13:29:35 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.694° N, 4.111° E Uncertainty ± 0.5 km |
| Event ID | ROB 10620 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-08-06 14:10:40 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
- 4
- Epicentral distance
- 5.4 – 30.7km
- Mean velocity, P wave
- 5.8km/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: 4 measurements, root-mean-square deviation 0.01 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)4 stations | |||||
| SKQSteenkerque | 5.4 | 204 | 11:29:37.21+1.22 s | 11:29:37.85+1.86 s | 0.64 |
| RQRRonquières | 12.7 | 140 | 11:29:38.45+2.46 s | – | – |
| LESLessines | 19.0 | 276 | 11:29:39.53+3.54 s | 11:29:42.15+6.16 s | 2.62 |
| TGATangissart | 30.7 | 109 | 11:29:41.55+5.56 s | – | – |
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