ANDENNE (BE)
Quarry blast4 May 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 13:49:112022-05-04
- UTC
- 11:49:112022-05-04
Main parameters
| Date and time | 2022-05-04 11:49:11 UTC 2022-05-04 13:49:11 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.494° N, 4.994° E Uncertainty ± 1.1 km |
| Event ID | ROB 16070 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-05-08 13:54:52 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
- 8
- Epicentral distance
- 13.8 – 90.8km
- Mean velocity, P wave
- 5.9km/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: 8 measurements, root-mean-square deviation 0.21 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 | 13.8 | 151 | 11:49:14.31+2.39 s | 11:49:16.26+4.34 s | 1.95 |
| CLAClavier | 23.4 | 111 | 11:49:16.29+4.37 s | 11:49:19.57+7.65 s | 3.28 |
| MRDMaredsous | 26.7 | 217 | 11:49:16.82+4.90 s | – | – |
| TGATangissart | 35.6 | 290 | 11:49:18.16+6.24 s | – | – |
| DOUDourbes | 52.7 | 213 | 11:49:21.40+9.48 s | – | – |
| MEMHMembach | 73.2 | 80 | 11:49:24.91+12.99 s | – | – |
| KLBKalborn | 90.8 | 118 | 11:49:27.35+15.43 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 72.9 | 65 | 11:49:24.34+12.42 s | – | – |
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