ANDENNE (BE)
Quarry blast26 February 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:23:532020-02-26
- UTC
- 13:23:532020-02-26
Main parameters
| Date and time | 2020-02-26 13:23:53 UTC 2020-02-26 14:23:53 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.507° N, 4.984° E Uncertainty ± 0.5 km |
| Event ID | ROB 9345 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-02-26 14:36:31 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
- 11
- Epicentral distance
- 15.4 – 92.1km
- Mean velocity, P wave
- 5.9km/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: 11 measurements, root-mean-square deviation 0.31 s. S wave: 8 measurements, root-mean-square deviation 0.32 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)10 stations | |||||
| GESGesves | 15.4 | 152 | 13:23:55.76+2.41 s | 13:23:58.00+4.65 s | 2.24 |
| CLAClavier | 24.6 | 113 | 13:23:57.92+4.57 s | 13:24:01.32+7.97 s | 3.40 |
| MRDMaredsous | 27.5 | 214 | 13:23:58.24+4.89 s | 13:24:01.97+8.62 s | 3.73 |
| TGATangissart | 34.5 | 289 | 13:23:59.32+5.97 s | 13:24:04.10+10.75 s | 4.78 |
| RCHRochefort | 42.8 | 156 | 13:24:00.75+7.40 s | 13:24:06.91+13.56 s | 6.16 |
| DOUDourbes | 53.5 | 211 | 13:24:03.10+9.75 s | 13:24:09.50+16.15 s | 6.40 |
| MEMSMembach | 73.6 | 81 | 13:24:05.96+12.61 s | – | – |
| MEMHMembach | 73.6 | 81 | 13:24:06.02+12.67 s | – | – |
| HOUHouvegnez | 74.5 | 103 | 13:24:06.26+12.91 s | – | – |
| KLBKalborn | 92.1 | 119 | 13:24:10.04+16.69 s | 13:24:20.49+27.14 s | 10.45 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 72.9 | 67 | 13:24:05.91+12.56 s | 13:24:15.19+21.84 s | 9.28 |