ANDENNE (BE)
Quarry blast5 March 2020
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 13:36:372020-03-05
- UTC
- 12:36:372020-03-05
Main parameters
| Date and time | 2020-03-05 12:36:37 UTC 2020-03-05 13:36:37 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.501° N, 4.994° E Uncertainty ± 1.5 km |
| Event ID | ROB 9390 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-05 22:31:13 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
- 14.4 – 73.0km
- Mean velocity, P wave
- 5.9km/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: 7 measurements, root-mean-square deviation 0.33 s. S wave: 6 measurements, root-mean-square deviation 0.30 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)6 stations | |||||
| GESGesves | 14.4 | 153 | 12:36:39.31+2.31 s | – | – |
| CLAClavier | 23.7 | 112 | 12:36:41.49+4.49 s | 12:36:44.72+7.72 s | 3.23 |
| MRDMaredsous | 27.3 | 216 | 12:36:41.91+4.91 s | 12:36:45.80+8.80 s | 3.89 |
| RCHRochefort | 41.9 | 157 | 12:36:44.49+7.49 s | 12:36:49.98+12.98 s | 5.49 |
| DOUDourbes | 53.3 | 212 | 12:36:46.49+9.49 s | 12:36:52.71+15.71 s | 6.22 |
| MEMHMembach | 73.0 | 80 | 12:36:50.42+13.42 s | 12:36:58.66+21.66 s | 8.24 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 72.5 | 66 | 12:36:49.48+12.48 s | 12:36:58.39+21.39 s | 8.91 |