WAIMES (BE)
Quarry blast27 November 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:15:042020-11-27
- UTC
- 10:15:042020-11-27
Main parameters
| Date and time | 2020-11-27 10:15:04 UTC 2020-11-27 11:15:04 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.415° N, 6.087° E Uncertainty ± 1.2 km |
| Event ID | ROB 11390 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-28 10:38:13 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
- 5
- Epicentral distance
- 8.9 – 40.4km
- 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: 5 measurements, root-mean-square deviation 0.19 s. S wave: 4 measurements, root-mean-square deviation 0.20 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)4 stations | |||||
| HOUHouvegnez | 8.9 | 221 | 10:15:06.39+1.72 s | – | – |
| MRGMont Rigi | 10.7 | 356 | 10:15:06.30+1.63 s | 10:15:08.41+3.74 s | 2.11 |
| MEMHMembach | 22.3 | 346 | 10:15:08.62+3.95 s | 10:15:11.95+7.28 s | 3.33 |
| KLBKalborn | 35.0 | 177 | 10:15:11.07+6.40 s | 10:15:15.52+10.85 s | 4.45 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 40.4 | 344 | 10:15:11.83+7.16 s | 10:15:17.19+12.52 s | 5.36 |