OLNE (BE)
Quarry blast30 January 2019
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:53:252019-01-30
- UTC
- 12:53:252019-01-30
Main parameters
| Date and time | 2019-01-30 12:53:25 UTC 2019-01-30 13:53:25 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.601° N, 5.728° E Uncertainty ± 0.6 km |
| Event ID | ROB 7750 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-01-30 16:20:27 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
- 14
- Epicentral distance
- 10.1 – 98.3km
- Mean velocity, P wave
- 5.7km/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: 14 measurements, root-mean-square deviation 0.27 s. S wave: 9 measurements, root-mean-square deviation 0.29 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 | |||||
| LCHLa Chartreuse | 10.1 | 295 | 12:53:27.13+1.78 s | 12:53:28.38+3.03 s | 1.25 |
| MEMSMembach | 20.0 | 87 | 12:53:29.09+3.74 s | – | – |
| MEMHMembach | 20.0 | 87 | 12:53:29.11+3.76 s | 12:53:31.32+5.97 s | 2.21 |
| EBNEben-Emael | 22.1 | 351 | 12:53:29.51+4.16 s | 12:53:32.43+7.08 s | 2.92 |
| MRGMont Rigi | 26.5 | 112 | 12:53:30.24+4.89 s | 12:53:34.04+8.69 s | 3.80 |
| HOUHouvegnez | 33.8 | 144 | 12:53:31.06+5.71 s | 12:53:35.32+9.97 s | 4.26 |
| CLAClavier | 36.4 | 236 | 12:53:31.80+6.45 s | – | – |
| GESGesves | 51.4 | 242 | 12:53:34.23+8.88 s | – | – |
| OPTBOpitter | 57.2 | 354 | 12:53:36.25+10.90 s | – | – |
| RCHRochefort | 61.1 | 216 | 12:53:36.04+10.69 s | – | – |
| KLBKalborn | 61.9 | 154 | 12:53:36.14+10.79 s | 12:53:44.18+18.83 s | 8.04 |
| DOUDourbes | 98.3 | 236 | 12:53:42.88+17.53 s | 12:53:54.68+29.33 s | 11.80 |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 23.2 | 38 | 12:53:29.78+4.43 s | 12:53:32.84+7.49 s | 3.06 |
| VKBValkenburg | 29.9 | 8 | 12:53:30.95+5.60 s | 12:53:34.57+9.22 s | 3.62 |