LIBIN (BE)
Quarry blast25 May 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 15:12:012020-05-25
- UTC
- 13:12:012020-05-25
Main parameters
| Date and time | 2020-05-25 13:12:01 UTC 2020-05-25 15:12:01 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.036° N, 5.183° E Uncertainty ± 3.2 km |
| Event ID | ROB 10090 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-26 09:02:04 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
- 13.6 – 96.9km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.4km/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 0.36 s. S wave: 5 measurements, root-mean-square deviation 0.28 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)9 stations | |||||
| RCHRochefort | 13.6 | 14 | 13:12:03.54+2.07 s | 13:12:05.28+3.81 s | 1.74 |
| GESGesves | 39.4 | 350 | 13:12:07.95+6.48 s | 13:12:12.55+11.08 s | 4.60 |
| MRDMaredsous | 41.8 | 315 | 13:12:08.16+6.69 s | 13:12:13.54+12.07 s | 5.38 |
| DOUDourbes | 42.6 | 279 | 13:12:08.79+7.32 s | 13:12:14.13+12.66 s | 5.34 |
| CLAClavier | 43.4 | 11 | 13:12:08.63+7.16 s | 13:12:13.59+12.12 s | 4.96 |
| KLBKalborn | 66.7 | 84 | 13:12:13.66+12.19 s | – | – |
| HOUHouvegnez | 68.5 | 59 | 13:12:13.41+11.94 s | – | – |
| VIAVianden | 74.0 | 98 | 13:12:13.95+12.48 s | – | – |
| RQRRonquières | 93.1 | 313 | 13:12:17.12+15.65 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 96.9 | 33 | 13:12:18.82+17.35 s | – | – |