WAIMES (BE)
Quarry blast16 March 2023
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 14:03:502023-03-16
- UTC
- 13:03:502023-03-16
Main parameters
| Date and time | 2023-03-16 13:03:50 UTC 2023-03-16 14:03:50 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.397° N, 6.104° E Uncertainty ± 1.1 km |
| Event ID | ROB 19000 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-03-17 11:45:17 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
- 8.5 – 33.1km
- Mean velocity, P wave
- 6.0km/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: 5 measurements, root-mean-square deviation 0.12 s. S wave: 4 measurements, root-mean-square deviation 0.12 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 | 8.5 | 236 | 13:03:52.39+1.72 s | 13:03:53.72+3.05 s | 1.33 |
| MRGMont Rigi | 12.8 | 351 | 13:03:53.09+2.42 s | 13:03:55.01+4.34 s | 1.92 |
| TNLTernell | 21.1 | 5 | 13:03:54.57+3.90 s | 13:03:57.43+6.76 s | 2.86 |
| KLBKalborn | 33.1 | 179 | 13:03:56.65+5.98 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 31.4 | 28 | 13:03:56.02+5.35 s | 13:04:01.03+10.36 s | 5.01 |