BASTOGNE (BE)
Quarry blast3 July 2020
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 15:45:292020-07-03
- UTC
- 13:45:292020-07-03
Main parameters
| Date and time | 2020-07-03 13:45:29 UTC 2020-07-03 15:45:29 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.037° N, 5.760° E Uncertainty ± 0.7 km |
| Event ID | ROB 10405 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-07-03 16:25:04 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
- 25.9 – 83.7km
- Mean velocity, P wave
- 6.3km/s
- Mean velocity, S wave
- 3.7km/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 0.40 s. S wave: 8 measurements, root-mean-square deviation 0.53 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 | 25.9 | 74 | 13:45:34.01+4.68 s | 13:45:37.38+8.05 s | 3.37 |
| VIAVianden | 33.7 | 110 | 13:45:35.48+6.15 s | 13:45:39.69+10.36 s | 4.21 |
| HOUHouvegnez | 39.3 | 26 | 13:45:36.67+7.34 s | 13:45:41.09+11.76 s | 4.42 |
| RCHRochefort | 40.3 | 289 | 13:45:36.20+6.87 s | 13:45:42.00+12.67 s | 5.80 |
| CLAClavier | 53.6 | 323 | 13:45:39.15+9.82 s | – | – |
| MRGMont Rigi | 57.3 | 23 | 13:45:39.98+10.65 s | 13:45:46.37+17.04 s | 6.39 |
| GESGesves | 61.7 | 309 | 13:45:40.66+11.33 s | 13:45:47.18+17.85 s | 6.52 |
| MEMHMembach | 66.0 | 16 | 13:45:41.42+12.09 s | 13:45:49.10+19.77 s | 7.68 |
| DOUDourbes | 83.7 | 275 | 13:45:43.37+14.04 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 81.8 | 9 | 13:45:43.34+14.01 s | 13:45:51.54+22.21 s | 8.20 |