YVOIR (BE)
Quarry blast12 August 2020
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 10:30:152020-08-12
- UTC
- 08:30:152020-08-12
Main parameters
| Date and time | 2020-08-12 08:30:15 UTC 2020-08-12 10:30:15 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.298° N, 4.913° E Uncertainty ± 1.2 km |
| Event ID | ROB 10650 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-08-12 10:59:33 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
- 7
- Epicentral distance
- 10.3 – 85.9km
- Mean velocity, P wave
- 6.0km/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: 7 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)7 stations | |||||
| MRDMaredsous | 10.3 | 272 | 08:30:17.06+1.96 s | – | – |
| GESGesves | 15.7 | 52 | 08:30:18.48+3.38 s | 08:30:19.69+4.59 s | 1.21 |
| RCHRochefort | 27.5 | 125 | 08:30:20.18+5.08 s | 08:30:23.53+8.43 s | 3.35 |
| CLAClavier | 30.8 | 64 | 08:30:21.12+6.02 s | – | – |
| DOUDourbes | 32.0 | 225 | 08:30:20.95+5.85 s | – | – |
| UCCSUccle | 67.9 | 325 | 08:30:26.74+11.64 s | – | – |
| MRGMont Rigi | 85.9 | 74 | 08:30:30.08+14.98 s | – | – |
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