OLNE (BE)
Quarry blast4 February 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 13:56:152022-02-04
- UTC
- 12:56:152022-02-04
Main parameters
| Date and time | 2022-02-04 12:56:15 UTC 2022-02-04 13:56:15 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.588° N, 5.708° E Uncertainty ± 0.8 km |
| Event ID | ROB 15395 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-02-07 09:27:00 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
- 10
- Epicentral distance
- 9.6 – 74.0km
- Mean velocity, P wave
- 6.2km/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: 10 measurements, root-mean-square deviation 0.16 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 | |||||
| LCHLa Chartreuse | 9.6 | 306 | 12:56:17.13+1.88 s | 12:56:18.77+3.52 s | 1.64 |
| STISart Tilman | 10.2 | 267 | 12:56:17.31+2.06 s | – | – |
| MEMHMembach | 21.5 | 84 | 12:56:19.37+4.12 s | – | – |
| MEMSMembach | 21.5 | 84 | 12:56:19.40+4.15 s | 12:56:22.11+6.86 s | 2.71 |
| MRGMont Rigi | 27.4 | 108 | 12:56:20.54+5.29 s | – | – |
| CLAClavier | 34.4 | 237 | 12:56:21.54+6.29 s | – | – |
| MRDMaredsous | 74.0 | 245 | 12:56:27.57+12.32 s | – | – |
| Dutch seismic network (KNMI)3 stations | |||||
| TERZTerziet | 23.4 | 37 | 12:56:19.50+4.25 s | – | – |
| HGNHeimansgroeve | 25.1 | 39 | 12:56:19.94+4.69 s | 12:56:22.88+7.63 s | 2.94 |
| VKBValkenburg | 31.5 | 10 | 12:56:20.95+5.70 s | – | – |
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