LA ROCHE-EN-ARDENNE (BE)
Quarry blast5 March 2020
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 15:44:592020-03-05
- UTC
- 14:44:592020-03-05
Main parameters
| Date and time | 2020-03-05 14:44:59 UTC 2020-03-05 15:44:59 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.182° N, 5.585° E Uncertainty ± 0.6 km |
| Event ID | ROB 9405 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-05 22:32:10 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
- 25.8 – 69.2km
- Mean velocity, P wave
- 6.0km/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 0.18 s. S wave: 4 measurements, root-mean-square deviation 0.05 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 | |||||
| RCHRochefort | 25.8 | 263 | 14:45:04.35+4.79 s | 14:45:07.63+8.07 s | 3.28 |
| CLAClavier | 33.2 | 323 | 14:45:05.45+5.89 s | 14:45:09.88+10.32 s | 4.43 |
| HOUHouvegnez | 35.5 | 57 | 14:45:05.61+6.05 s | – | – |
| KLBKalborn | 38.6 | 104 | 14:45:06.59+7.03 s | 14:45:11.37+11.81 s | 4.78 |
| GESGesves | 42.0 | 303 | 14:45:07.11+7.55 s | – | – |
| MEMHMembach | 56.2 | 32 | 14:45:09.08+9.52 s | 14:45:16.75+17.19 s | 7.67 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 69.2 | 21 | 14:45:11.59+12.03 s | – | – |