ANDENNE (BE)
Quarry blast3 April 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:34:492020-04-03
- UTC
- 12:34:492020-04-03
Main parameters
| Date and time | 2020-04-03 12:34:49 UTC 2020-04-03 14:34:49 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.454° N, 5.012° E Uncertainty ± 2.4 km |
| Event ID | ROB 9735 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-04-03 15:10:53 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
- 7
- Epicentral distance
- 9.3 – 87.5km
- Mean velocity, P wave
- 5.6km/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 0.36 s. S wave: 5 measurements, root-mean-square deviation 0.32 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)7 stations | |||||
| GESGesves | 9.3 | 145 | 12:34:50.35+1.24 s | 12:34:52.19+3.08 s | 1.84 |
| CLAClavier | 20.9 | 101 | 12:34:52.23+3.12 s | 12:34:55.50+6.39 s | 3.27 |
| MRDMaredsous | 24.2 | 226 | 12:34:53.12+4.01 s | 12:34:56.71+7.60 s | 3.59 |
| RCHRochefort | 36.6 | 155 | 12:34:55.84+6.73 s | 12:35:00.86+11.75 s | 5.02 |
| LCHLa Chartreuse | 46.4 | 63 | 12:34:57.83+8.72 s | – | – |
| DOUDourbes | 49.8 | 217 | 12:34:57.96+8.85 s | 12:35:04.02+14.91 s | 6.06 |
| KLBKalborn | 87.5 | 116 | 12:35:04.30+15.19 s | – | – |