FLEMALLE (BE)
Quarry blast19 March 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 13:54:192020-03-19
- UTC
- 12:54:192020-03-19
Main parameters
| Date and time | 2020-03-19 12:54:19 UTC 2020-03-19 13:54:19 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.587° N, 5.426° E Uncertainty ± 2.0 km |
| Event ID | ROB 9530 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-19 15:33:16 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
- 20.7 – 72.7km
- Mean velocity, P wave
- 5.6km/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 | |||||
| CLAClavier | 20.7 | 205 | 12:54:22.75+3.49 s | – | – |
| GESGesves | 32.9 | 227 | 12:54:24.93+5.67 s | 12:54:29.93+10.67 s | 5.00 |
| MRGMont Rigi | 46.7 | 100 | 12:54:27.15+7.89 s | – | – |
| HOUHouvegnez | 48.6 | 122 | 12:54:28.06+8.80 s | – | – |
| RCHRochefort | 50.1 | 197 | 12:54:27.96+8.70 s | – | – |
| MRDMaredsous | 56.5 | 236 | 12:54:29.06+9.80 s | – | – |
| KLBKalborn | 72.7 | 138 | 12:54:32.08+12.82 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 40.8 | 61 | 12:54:26.77+7.51 s | 12:54:31.68+12.42 s | 4.91 |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry