BASTOGNE (BE)
Quarry blast19 May 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:19:452020-05-19
- UTC
- 10:19:452020-05-19
Main parameters
| Date and time | 2020-05-19 10:19:45 UTC 2020-05-19 12:19:45 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 49.998° N, 5.727° E Uncertainty ± 0.7 km |
| Event ID | ROB 10040 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-20 09:21:35 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
- 10
- Epicentral distance
- 29.6 – 86.5km
- Mean velocity, P wave
- 5.7km/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: 10 measurements, root-mean-square deviation 0.17 s. S wave: 4 measurements, root-mean-square deviation 0.39 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)9 stations | |||||
| KLBKalborn | 29.6 | 67 | 10:19:50.25+4.90 s | 10:19:53.57+8.22 s | 3.32 |
| VIAVianden | 34.8 | 101 | 10:19:51.61+6.26 s | 10:19:56.12+10.77 s | 4.51 |
| RCHRochefort | 39.8 | 296 | 10:19:52.30+6.95 s | 10:19:57.50+12.15 s | 5.20 |
| HOUHouvegnez | 44.3 | 27 | 10:19:52.94+7.59 s | – | – |
| MRGMont Rigi | 62.3 | 23 | 10:19:56.38+11.03 s | 10:20:03.90+18.55 s | 7.52 |
| GESGesves | 62.8 | 314 | 10:19:56.55+11.20 s | – | – |
| MEMHMembach | 70.9 | 16 | 10:19:57.68+12.33 s | – | – |
| MEMSMembach | 70.9 | 16 | 10:19:57.76+12.41 s | – | – |
| DOUDourbes | 81.8 | 278 | 10:19:59.39+14.04 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 86.5 | 10 | 10:20:00.45+15.10 s | – | – |