REBECQ (BE)
Quarry blast23 June 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 15:16:412020-06-23
- UTC
- 13:16:412020-06-23
Main parameters
| Date and time | 2020-06-23 13:16:41 UTC 2020-06-23 15:16:41 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.702° N, 4.139° E Uncertainty ± 2.3 km |
| Event ID | ROB 10350 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-23 17:04:57 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
- 6
- Epicentral distance
- 7.2 – 75.9km
- 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: 6 measurements, root-mean-square deviation 0.42 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)6 stations | |||||
| SKQSteenkerque | 7.2 | 215 | 13:16:42.35+1.25 s | 13:16:43.51+2.41 s | 1.16 |
| RQRRonquières | 12.3 | 150 | 13:16:42.79+1.69 s | – | – |
| UCCBUccle | 18.9 | 56 | 13:16:44.97+3.87 s | 13:16:47.23+6.13 s | 2.26 |
| BRQBracquegnies | 24.6 | 180 | 13:16:46.15+5.05 s | – | – |
| BOUBougnies | 37.4 | 202 | 13:16:47.95+6.85 s | – | – |
| GESGesves | 75.9 | 117 | 13:16:54.16+13.06 s | 13:17:04.60+23.50 s | 10.44 |
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