OLNE (BE)
Quarry blast5 November 2020
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:59:132020-11-05
- UTC
- 10:59:132020-11-05
Main parameters
| Date and time | 2020-11-05 10:59:13 UTC 2020-11-05 11:59:13 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.604° N, 5.711° E Uncertainty ± 0.9 km |
| Event ID | ROB 11265 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-10 08:43:08 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
- 8.8 – 35.5km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.2km/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 0.18 s. S wave: 4 measurements, root-mean-square deviation 0.32 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 | |||||
| LCHLa Chartreuse | 8.8 | 296 | 10:59:15.18+1.53 s | 10:59:16.88+3.23 s | 1.70 |
| MEMHMembach | 21.2 | 88 | 10:59:17.27+3.62 s | 10:59:20.57+6.92 s | 3.30 |
| MEMSMembach | 21.2 | 88 | 10:59:17.35+3.70 s | – | – |
| EBNEben-Emael | 21.6 | 354 | 10:59:17.54+3.89 s | – | – |
| HOUHouvegnez | 34.8 | 143 | 10:59:20.12+6.47 s | 10:59:24.39+10.74 s | 4.27 |
| CLAClavier | 35.5 | 235 | 10:59:20.00+6.35 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 23.7 | 41 | 10:59:17.98+4.33 s | 10:59:21.77+8.12 s | 3.79 |