WAIMES (BE)
Quarry blast27 October 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 11:40:002020-10-27
- UTC
- 10:40:002020-10-27
Main parameters
| Date and time | 2020-10-27 10:40:00 UTC 2020-10-27 11:40:00 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.422° N, 6.096° E Uncertainty ± 1.9 km |
| Event ID | ROB 11170 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-10-27 15:07:52 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
- 9.9 – 71.8km
- Mean velocity, P wave
- 5.9km/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 0.76 s. S wave: 5 measurements, root-mean-square deviation 0.50 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 | |||||
| HOUHouvegnez | 9.9 | 221 | 10:40:02.30+1.89 s | – | – |
| MRGMont Rigi | 10.0 | 352 | 10:40:02.17+1.76 s | 10:40:04.24+3.83 s | 2.07 |
| MEMHMembach | 21.7 | 344 | 10:40:02.62+2.21 s | 10:40:07.70+7.29 s | 5.08 |
| MEMSMembach | 21.7 | 344 | 10:40:02.85+2.44 s | – | – |
| KLBKalborn | 35.8 | 178 | 10:40:06.91+6.50 s | 10:40:11.52+11.11 s | 4.61 |
| GESGesves | 71.8 | 267 | 10:40:12.89+12.48 s | 10:40:22.10+21.69 s | 9.21 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 39.8 | 343 | 10:40:07.47+7.06 s | 10:40:13.02+12.61 s | 5.55 |