YVOIR (BE)
Quarry blast6 July 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 16:40:282020-07-06
- UTC
- 14:40:282020-07-06
Main parameters
| Date and time | 2020-07-06 14:40:28 UTC 2020-07-06 16:40:28 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.317° N, 4.893° E Uncertainty ± 1.0 km |
| Event ID | ROB 10410 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-07-06 17:25:41 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
- 9.1 – 88.8km
- Mean velocity, P wave
- 5.6km/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 0.19 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 | |||||
| MRDMaredsous | 9.1 | 260 | 14:40:29.96+1.48 s | – | – |
| GESGesves | 15.7 | 61 | 14:40:30.92+2.44 s | 14:40:33.37+4.89 s | 2.45 |
| RCHRochefort | 29.8 | 127 | 14:40:33.77+5.29 s | 14:40:37.97+9.49 s | 4.20 |
| CLAClavier | 31.2 | 68 | 14:40:33.84+5.36 s | 14:40:38.33+9.85 s | 4.49 |
| DOUDourbes | 32.6 | 221 | 14:40:34.55+6.07 s | – | – |
| TGATangissart | 41.5 | 321 | 14:40:35.96+7.48 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 88.8 | 56 | 14:40:44.18+15.70 s | – | – |
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