ANDENNE (BE)
Quarry blast3 March 2021
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 13:40:232021-03-03
- UTC
- 12:40:232021-03-03
Main parameters
| Date and time | 2021-03-03 12:40:23 UTC 2021-03-03 13:40:23 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.484° N, 5.006° E Uncertainty ± 4.0 km |
| Event ID | ROB 12630 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-03 16:08:57 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
- 12.5 – 52.3km
- Mean velocity, P wave
- 5.2km/s
- Mean velocity, S wave
- 3.1km/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: 5 measurements, root-mean-square deviation 0.46 s. S wave: 5 measurements, root-mean-square deviation 0.51 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 | 12.5 | 152 | 12:40:25.77+1.90 s | 12:40:27.90+4.03 s | 2.13 |
| CLAClavier | 22.2 | 109 | 12:40:27.56+3.69 s | 12:40:31.33+7.46 s | 3.77 |
| MRDMaredsous | 26.4 | 220 | 12:40:28.12+4.25 s | 12:40:32.18+8.31 s | 4.06 |
| RCHRochefort | 39.9 | 157 | 12:40:31.05+7.18 s | 12:40:36.81+12.94 s | 5.76 |
| DOUDourbes | 52.3 | 214 | 12:40:34.35+10.48 s | 12:40:39.49+15.62 s | 5.14 |