ANDENNE (BE)
Quarry blast13 May 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:37:192020-05-13
- UTC
- 12:37:192020-05-13
Main parameters
| Date and time | 2020-05-13 12:37:19 UTC 2020-05-13 14:37:19 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.507° N, 4.983° E Uncertainty ± 1.4 km |
| Event ID | ROB 10005 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-13 15:14:26 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
- 6
- Epicentral distance
- 15.4 – 73.7km
- 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: 6 measurements, root-mean-square deviation 0.39 s. S wave: 5 measurements, root-mean-square deviation 0.53 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)5 stations | |||||
| GESGesves | 15.4 | 151 | 12:37:22.21+2.23 s | 12:37:24.38+4.40 s | 2.17 |
| MRDMaredsous | 27.4 | 214 | 12:37:24.87+4.89 s | 12:37:28.49+8.51 s | 3.62 |
| RCHRochefort | 42.8 | 156 | 12:37:27.91+7.93 s | 12:37:33.89+13.91 s | 5.98 |
| DOUDourbes | 53.5 | 211 | 12:37:30.03+10.05 s | 12:37:36.04+16.06 s | 6.01 |
| MEMHMembach | 73.7 | 81 | 12:37:33.18+13.20 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.0 | 67 | 12:37:32.49+12.51 s | 12:37:41.41+21.43 s | 8.92 |