WAIMES (BE)
Quarry blast12 August 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:43:302020-08-12
- UTC
- 09:43:302020-08-12
Main parameters
| Date and time | 2020-08-12 09:43:30 UTC 2020-08-12 11:43:30 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.428° N, 6.071° E Uncertainty ± 1.6 km |
| Event ID | ROB 10655 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-08-12 11:58:07 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
- 9.3 – 40.9km
- Mean velocity, P wave
- 6.1km/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 0.39 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 | |||||
| MRGMont Rigi | 9.3 | 2 | 09:43:31.83+1.76 s | 09:43:33.18+3.11 s | 1.35 |
| HOUHouvegnez | 9.5 | 210 | 09:43:31.92+1.85 s | – | – |
| MEMSMembach | 20.6 | 348 | 09:43:34.07+4.00 s | – | – |
| MEMHMembach | 20.6 | 348 | 09:43:34.13+4.06 s | – | – |
| KLBKalborn | 36.6 | 176 | 09:43:36.62+6.55 s | – | – |
| LCHLa Chartreuse | 40.9 | 305 | 09:43:36.44+6.37 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 38.7 | 345 | 09:43:37.38+7.31 s | – | – |
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