ANDENNE (BE)
Quarry blast3 February 2020
- Magnitude
- 2.1ML
- Depth
- –
- Belgian time
- 14:19:182020-02-03
- UTC
- 13:19:182020-02-03
Main parameters
| Date and time | 2020-02-03 13:19:18 UTC 2020-02-03 14:19:18 Belgian time |
|---|---|
| Magnitude | ML 2.1 |
| Epicentral coordinates | 50.506° N, 4.976° E Uncertainty ± 1.7 km |
| Event ID | ROB 9225 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-02-03 15:41:18 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
- 13
- Epicentral distance
- 25.1 – 108.2km
- Mean velocity, P wave
- 5.6km/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: 13 measurements, root-mean-square deviation 0.34 s. S wave: 9 measurements, root-mean-square deviation 0.79 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)11 stations | |||||
| CLAClavier | 25.1 | 113 | 13:19:23.31+4.35 s | 13:19:26.33+7.37 s | 3.02 |
| RCHRochefort | 43.0 | 155 | 13:19:26.42+7.46 s | 13:19:32.35+13.39 s | 5.93 |
| DOUDourbes | 53.2 | 211 | 13:19:28.92+9.96 s | 13:19:34.50+15.54 s | 5.58 |
| EBNEben-Emael | 59.3 | 57 | 13:19:29.20+10.24 s | 13:19:35.10+16.14 s | 5.90 |
| BRQBracquegnies | 59.6 | 268 | 13:19:29.72+10.76 s | – | – |
| MEMSMembach | 74.2 | 81 | 13:19:31.73+12.77 s | 13:19:41.32+22.36 s | 9.59 |
| MEMHMembach | 74.2 | 81 | 13:19:31.76+12.80 s | 13:19:41.43+22.47 s | 9.67 |
| BOUBougnies | 74.3 | 260 | 13:19:31.26+12.30 s | – | – |
| MRGMont Rigi | 78.0 | 89 | 13:19:32.98+14.02 s | 13:19:43.96+25.00 s | 10.98 |
| KLBKalborn | 92.5 | 119 | 13:19:35.20+16.24 s | – | – |
| VIAVianden | 108.2 | 126 | 13:19:38.26+19.30 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| VKBValkenburg | 69.9 | 55 | 13:19:30.99+12.03 s | 13:19:39.69+20.73 s | 8.70 |
| HGNHeimansgroeve | 73.5 | 67 | 13:19:31.73+12.77 s | 13:19:40.94+21.98 s | 9.21 |