OLNE (BE)
Quarry blast7 January 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:52:092020-01-07
- UTC
- 13:52:092020-01-07
Main parameters
| Date and time | 2020-01-07 13:52:09 UTC 2020-01-07 14:52:09 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.602° N, 5.720° E Uncertainty ± 0.6 km |
| Event ID | ROB 9070 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-07 15:15:05 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
- 9.5 – 97.9km
- 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: 14 measurements, root-mean-square deviation 0.17 s. S wave: 5 measurements, root-mean-square deviation 0.34 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 | 9.5 | 296 | 13:52:10.98+1.71 s | 13:52:12.53+3.26 s | 1.55 |
| MEMSMembach | 20.5 | 88 | 13:52:12.92+3.65 s | – | – |
| MEMHMembach | 20.5 | 88 | 13:52:12.95+3.68 s | 13:52:16.07+6.80 s | 3.12 |
| EBNEben-Emael | 21.9 | 352 | 13:52:13.26+3.99 s | – | – |
| MRGMont Rigi | 27.1 | 112 | 13:52:13.98+4.71 s | 13:52:17.88+8.61 s | 3.90 |
| HOUHouvegnez | 34.2 | 144 | 13:52:15.56+6.29 s | – | – |
| CLAClavier | 35.9 | 236 | 13:52:15.57+6.30 s | – | – |
| GESGesves | 51.0 | 242 | 13:52:18.17+8.90 s | – | – |
| OPTOpitter | 57.1 | 354 | 13:52:19.13+9.86 s | – | – |
| RCHRochefort | 60.8 | 215 | 13:52:20.21+10.94 s | – | – |
| KLBKalborn | 62.3 | 153 | 13:52:20.14+10.87 s | 13:52:27.76+18.49 s | 7.62 |
| DOUDourbes | 97.9 | 235 | 13:52:26.38+17.11 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 23.4 | 40 | 13:52:13.63+4.36 s | 13:52:17.13+7.86 s | 3.50 |
| VKBValkenburg | 29.9 | 9 | 13:52:14.78+5.51 s | – | – |