WAIMES (BE)
Quarry blast14 May 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:31:152020-05-14
- UTC
- 12:31:152020-05-14
Main parameters
| Date and time | 2020-05-14 12:31:15 UTC 2020-05-14 14:31:15 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.416° N, 6.083° E Uncertainty ± 0.9 km |
| Event ID | ROB 10025 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-14 14:45:53 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
- 8.8 – 40.2km
- Mean velocity, P wave
- 5.7km/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: 5 measurements, root-mean-square deviation 0.23 s. S wave: 4 measurements, root-mean-square deviation 0.18 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 | 8.8 | 219 | 12:31:17.07+1.66 s | – | – |
| MRGMont Rigi | 10.6 | 357 | 12:31:16.97+1.56 s | 12:31:19.04+3.63 s | 2.07 |
| MEMHMembach | 22.1 | 347 | 12:31:19.65+4.24 s | 12:31:22.59+7.18 s | 2.94 |
| KLBKalborn | 35.2 | 177 | 12:31:21.81+6.40 s | 12:31:26.31+10.90 s | 4.50 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 40.2 | 345 | 12:31:22.55+7.14 s | 12:31:27.75+12.34 s | 5.20 |