BASTOGNE (BE)
Quarry blast18 March 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 15:30:482020-03-18
- UTC
- 14:30:482020-03-18
Main parameters
| Date and time | 2020-03-18 14:30:48 UTC 2020-03-18 15:30:48 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.028° N, 5.745° E Uncertainty ± 0.7 km |
| Event ID | ROB 9515 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-18 15:47:40 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
- 27.3 – 83.0km
- Mean velocity, P wave
- 5.7km/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: 8 measurements, root-mean-square deviation 0.24 s. S wave: 4 measurements, root-mean-square deviation 0.11 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 | |||||
| KLBKalborn | 27.3 | 73 | 14:30:53.09+4.69 s | 14:30:56.43+8.03 s | 3.34 |
| VIAVianden | 34.4 | 107 | 14:30:54.57+6.17 s | 14:30:58.75+10.35 s | 4.18 |
| RCHRochefort | 39.7 | 291 | 14:30:55.37+6.97 s | 14:31:00.22+11.82 s | 4.85 |
| CLAClavier | 53.8 | 324 | 14:30:58.26+9.86 s | – | – |
| MEMSMembach | 67.3 | 16 | 14:31:00.50+12.10 s | – | – |
| MEMHMembach | 67.3 | 16 | 14:31:00.56+12.16 s | 14:31:08.15+19.75 s | 7.59 |
| DOUDourbes | 82.7 | 276 | 14:31:02.56+14.16 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 83.0 | 9 | 14:31:03.19+14.79 s | – | – |