DURBUY (BE)
Quarry blast22 June 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:53:562020-06-22
- UTC
- 12:53:562020-06-22
Main parameters
| Date and time | 2020-06-22 12:53:56 UTC 2020-06-22 14:53:56 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.360° N, 5.557° E Uncertainty ± 0.6 km |
| Event ID | ROB 10325 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-22 15:02:20 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
- 19.3 – 48.9km
- Mean velocity, P wave
- 5.6km/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 0.09 s. S wave: 4 measurements, root-mean-square deviation 0.27 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 | |||||
| CLAClavier | 19.3 | 290 | 12:54:00.05+3.33 s | – | – |
| HOUHouvegnez | 31.9 | 91 | 12:54:02.46+5.74 s | – | – |
| RCHRochefort | 32.8 | 226 | 12:54:02.67+5.95 s | 12:54:06.70+9.98 s | 4.03 |
| GESGesves | 33.5 | 275 | 12:54:02.88+6.16 s | 12:54:07.59+10.87 s | 4.71 |
| MRGMont Rigi | 40.5 | 65 | 12:54:03.95+7.23 s | 12:54:09.17+12.45 s | 5.22 |
| KLBKalborn | 48.9 | 126 | 12:54:05.51+8.79 s | 12:54:11.66+14.94 s | 6.15 |