OLNE (BE)
Quarry blast16 March 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 15:06:102020-03-16
- UTC
- 14:06:102020-03-16
Main parameters
| Date and time | 2020-03-16 14:06:10 UTC 2020-03-16 15:06:10 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.584° N, 5.722° E Uncertainty ± 0.5 km |
| Event ID | ROB 9480 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-16 15:25:22 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
- 10.6 – 60.5km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.2km/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 0.21 s. S wave: 7 measurements, root-mean-square deviation 0.25 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 | |||||
| LCHLa Chartreuse | 10.6 | 305 | 14:06:12.18+1.71 s | 14:06:14.08+3.61 s | 1.90 |
| MEMHMembach | 20.6 | 82 | 14:06:14.19+3.72 s | 14:06:17.43+6.96 s | 3.24 |
| MEMSMembach | 20.6 | 82 | 14:06:14.25+3.78 s | – | – |
| EBNEben-Emael | 23.9 | 353 | 14:06:14.79+4.32 s | 14:06:18.36+7.89 s | 3.57 |
| MRGMont Rigi | 26.3 | 108 | 14:06:14.90+4.43 s | – | – |
| HOUHouvegnez | 32.5 | 142 | 14:06:15.64+5.17 s | 14:06:21.02+10.55 s | 5.38 |
| CLAClavier | 35.0 | 239 | 14:06:16.63+6.16 s | 14:06:21.77+11.30 s | 5.14 |
| GESGesves | 50.2 | 244 | 14:06:19.15+8.68 s | 14:06:26.06+15.59 s | 6.91 |
| RCHRochefort | 59.3 | 217 | 14:06:20.91+10.44 s | – | – |
| KLBKalborn | 60.5 | 153 | 14:06:20.91+10.44 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 24.9 | 36 | 14:06:14.77+4.30 s | 14:06:18.94+8.47 s | 4.17 |