ANDENNE (BE)
Quarry blast10 March 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:20:192020-03-10
- UTC
- 13:20:192020-03-10
Main parameters
| Date and time | 2020-03-10 13:20:19 UTC 2020-03-10 14:20:19 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.505° N, 4.970° E Uncertainty ± 0.7 km |
| Event ID | ROB 9430 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-10 14:51:16 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
- 15.7 – 92.8km
- Mean velocity, P wave
- 5.8km/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 0.27 s. S wave: 7 measurements, root-mean-square deviation 0.26 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)12 stations | |||||
| GESGesves | 15.7 | 148 | 13:20:22.09+2.33 s | 13:20:24.22+4.46 s | 2.13 |
| CLAClavier | 25.5 | 112 | 13:20:24.25+4.49 s | 13:20:27.64+7.88 s | 3.39 |
| MRDMaredsous | 26.7 | 213 | 13:20:24.41+4.65 s | 13:20:28.39+8.63 s | 3.98 |
| TGATangissart | 33.6 | 290 | 13:20:25.70+5.94 s | 13:20:30.18+10.42 s | 4.48 |
| RCHRochefort | 43.0 | 155 | 13:20:27.17+7.41 s | 13:20:32.82+13.06 s | 5.65 |
| DOUDourbes | 52.8 | 211 | 13:20:29.27+9.51 s | 13:20:35.96+16.20 s | 6.69 |
| SKQSteenkerque | 65.0 | 285 | 13:20:30.49+10.73 s | 13:20:39.30+19.54 s | 8.81 |
| MEMHMembach | 74.6 | 81 | 13:20:32.92+13.16 s | – | – |
| MEMSMembach | 74.6 | 81 | 13:20:32.96+13.20 s | – | – |
| HOUHouvegnez | 75.5 | 102 | 13:20:32.84+13.08 s | – | – |
| MRGMont Rigi | 78.4 | 89 | 13:20:33.27+13.51 s | – | – |
| KLBKalborn | 92.8 | 119 | 13:20:35.40+15.64 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.9 | 67 | 13:20:32.44+12.68 s | – | – |