YVOIR (BE)
Quarry blast28 January 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:29:132020-01-28
- UTC
- 13:29:132020-01-28
Main parameters
| Date and time | 2020-01-28 13:29:13 UTC 2020-01-28 14:29:13 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.290° N, 4.905° E Uncertainty ± 0.7 km |
| Event ID | ROB 9200 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-30 13:21:28 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
- 9.9 – 44.4km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.3km/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 0.11 s. S wave: 5 measurements, root-mean-square deviation 0.11 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 | 9.9 | 278 | 13:29:15.32+1.89 s | 13:29:16.77+3.34 s | 1.45 |
| GESGesves | 16.7 | 51 | 13:29:16.62+3.19 s | 13:29:18.79+5.36 s | 2.17 |
| RCHRochefort | 27.4 | 123 | 13:29:18.33+4.90 s | 13:29:22.15+8.72 s | 3.82 |
| DOUDourbes | 31.0 | 226 | 13:29:19.24+5.81 s | 13:29:23.01+9.58 s | 3.77 |
| CLAClavier | 31.7 | 63 | 13:29:19.37+5.94 s | 13:29:23.12+9.69 s | 3.75 |
| TGATangissart | 44.4 | 322 | 13:29:21.53+8.10 s | – | – |