REBECQ (BE)
Quarry blast16 September 2020
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 10:43:042020-09-16
- UTC
- 08:43:042020-09-16
Main parameters
| Date and time | 2020-09-16 08:43:04 UTC 2020-09-16 10:43:04 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.666° N, 4.169° E Uncertainty ± 1.1 km |
| Event ID | ROB 10880 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-09-17 09:54:52 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
- 6.6 – 25.9km
- Mean velocity, P wave
- 5.5km/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 0.15 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 | 6.6 | 253 | 08:43:06.12+1.33 s | 08:43:06.90+2.11 s | 0.78 |
| RQRRonquières | 7.8 | 150 | 08:43:06.52+1.73 s | – | – |
| UCCBUccle | 19.8 | 43 | 08:43:08.87+4.08 s | 08:43:10.94+6.15 s | 2.07 |
| TGATangissart | 25.9 | 105 | 08:43:09.59+4.80 s | 08:43:12.49+7.70 s | 2.90 |
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