ANDENNE (BE)
Quarry blast25 February 2019
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 14:26:332019-02-25
- UTC
- 13:26:332019-02-25
Main parameters
| Date and time | 2019-02-25 13:26:33 UTC 2019-02-25 14:26:33 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.503° N, 4.990° E Uncertainty ± 0.8 km |
| Event ID | ROB 7885 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-02-25 14:55:44 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
- 6
- Epicentral distance
- 14.9 – 55.2km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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: 6 measurements, root-mean-square deviation 0.19 s. S wave: 5 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)6 stations | |||||
| GESGesves | 14.9 | 152 | 13:26:35.66+2.45 s | 13:26:37.90+4.69 s | 2.24 |
| CLAClavier | 24.1 | 113 | 13:26:37.54+4.33 s | 13:26:41.06+7.85 s | 3.52 |
| MRDMaredsous | 27.4 | 215 | 13:26:38.12+4.91 s | 13:26:41.94+8.73 s | 3.82 |
| RCHRochefort | 42.3 | 156 | 13:26:40.97+7.76 s | 13:26:46.37+13.16 s | 5.40 |
| DOUDourbes | 53.4 | 212 | 13:26:42.52+9.31 s | 13:26:49.36+16.15 s | 6.84 |
| UCCBUccle | 55.2 | 307 | 13:26:42.85+9.64 s | – | – |