ANDENNE (BE)
Quarry blast2 March 2017
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 14:22:262017-03-02
- UTC
- 13:22:262017-03-02
Main parameters
| Date and time | 2017-03-02 13:22:26 UTC 2017-03-02 14:22:26 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.468° N, 5.022° E Uncertainty ± 5.6 km |
| Event ID | ROB 5644 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-03-02 14:29:17 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
- 10.3 – 120.5km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.5km/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: 8 measurements, root-mean-square deviation 0.39 s. S wave: 4 measurements, root-mean-square deviation 0.30 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | 10.3 | 153 | 13:22:28.34+1.77 s | – | – |
| CLAClavier | 20.6 | 105 | 13:22:30.38+3.81 s | – | – |
| MRDMaredsous | 25.8 | 224 | 13:22:31.09+4.52 s | 13:22:33.64+7.07 s | 2.55 |
| RCHRochefort | 37.7 | 157 | 13:22:33.19+6.62 s | – | – |
| STISart Tilman | 40.5 | 71 | 13:22:34.52+7.95 s | – | – |
| LCHLa Chartreuse | 45.1 | 65 | – | 13:22:39.97+13.40 s | – |
| DOUDourbes | 51.4 | 216 | 13:22:35.72+9.15 s | – | – |
| MEMHMembach | 71.8 | 77 | – | 13:22:47.07+20.50 s | – |
| MRGMont Rigi | 74.9 | 86 | 13:22:39.93+13.36 s | – | – |
| WLFWalferdange | 120.5 | 137 | 13:22:47.28+20.71 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 72.3 | 63 | 13:22:38.55+11.98 s | 13:22:47.30+20.73 s | 8.75 |