ANDENNE (BE)
Quarry blast6 January 2017
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:31:142017-01-06
- UTC
- 13:31:142017-01-06
Main parameters
| Date and time | 2017-01-06 13:31:14 UTC 2017-01-06 14:31:14 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.495° N, 5.007° E Uncertainty ± 4.9 km |
| Event ID | ROB 5611 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-01-06 14:48:49 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
- 13.5 – 123.5km
- Mean velocity, P wave
- 5.4km/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: 12 measurements, root-mean-square deviation 0.56 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)12 stations | |||||
| GESGesves | 13.5 | 155 | 13:31:16.76+1.93 s | – | – |
| CLAClavier | 22.6 | 112 | 13:31:18.81+3.98 s | – | – |
| MRDMaredsous | 27.4 | 218 | 13:31:19.40+4.57 s | – | – |
| STISart Tilman | 40.7 | 76 | 13:31:20.42+5.59 s | – | – |
| RCHRochefort | 40.9 | 157 | 13:31:22.23+7.40 s | – | – |
| DOUDourbes | 53.3 | 214 | 13:31:24.09+9.26 s | – | – |
| MEMSMembach | 72.2 | 79 | 13:31:27.91+13.08 s | – | – |
| MEMHMembach | 72.2 | 79 | 13:31:27.95+13.12 s | – | – |
| HOUHouvegnez | 72.6 | 102 | 13:31:27.38+12.55 s | – | – |
| MRGMont Rigi | 75.8 | 88 | 13:31:29.00+14.17 s | – | – |
| BOUBougnies | 76.4 | 262 | 13:31:28.37+13.54 s | – | – |
| WLFWalferdange | 123.5 | 138 | 13:31:35.91+21.08 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 71.9 | 65 | 13:31:26.64+11.81 s | – | – |