WELLIN (BE)
Quarry blast16 March 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:15:432020-03-16
- UTC
- 13:15:432020-03-16
Main parameters
| Date and time | 2020-03-16 13:15:43 UTC 2020-03-16 14:15:43 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.095° N, 5.093° E Uncertainty ± 0.7 km |
| Event ID | ROB 9485 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-16 15:25:48 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
- 7
- Epicentral distance
- 11.7 – 83.9km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.1km/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: 7 measurements, root-mean-square deviation 0.25 s. S wave: 5 measurements, root-mean-square deviation 0.13 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 | |||||
| RCHRochefort | 11.7 | 55 | 13:15:44.65+1.63 s | 13:15:46.83+3.81 s | 2.18 |
| GESGesves | 32.2 | 359 | 13:15:48.34+5.32 s | 13:15:53.22+10.20 s | 4.88 |
| MRDMaredsous | 32.7 | 315 | 13:15:49.15+6.13 s | 13:15:53.22+10.20 s | 4.07 |
| DOUDourbes | 35.6 | 270 | 13:15:49.15+6.13 s | 13:15:54.11+11.09 s | 4.96 |
| CLAClavier | 39.0 | 22 | 13:15:49.75+6.73 s | 13:15:55.34+12.32 s | 5.59 |
| KLBKalborn | 72.7 | 89 | 13:15:55.58+12.56 s | – | – |
| MRGMont Rigi | 83.9 | 56 | 13:15:57.87+14.85 s | – | – |