OLNE (BE)
Quarry blast3 July 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:11:192020-07-03
- UTC
- 12:11:192020-07-03
Main parameters
| Date and time | 2020-07-03 12:11:19 UTC 2020-07-03 14:11:19 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.599° N, 5.726° E Uncertainty ± 0.7 km |
| Event ID | ROB 10400 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-07-03 16:24:44 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
- 9
- Epicentral distance
- 10.0 – 61.9km
- Mean velocity, P wave
- 6.0km/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: 9 measurements, root-mean-square deviation 0.27 s. S wave: 6 measurements, root-mean-square deviation 0.47 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)7 stations | |||||
| LCHLa Chartreuse | 10.0 | 296 | 12:11:21.34+1.56 s | 12:11:23.21+3.43 s | 1.87 |
| MEMHMembach | 20.1 | 87 | 12:11:23.46+3.68 s | – | – |
| EBNEben-Emael | 22.3 | 351 | 12:11:23.73+3.95 s | 12:11:27.68+7.90 s | 3.95 |
| HOUHouvegnez | 33.7 | 144 | 12:11:26.10+6.32 s | – | – |
| CLAClavier | 36.1 | 236 | 12:11:25.84+6.06 s | 12:11:31.61+11.83 s | 5.77 |
| GESGesves | 51.2 | 243 | 12:11:28.94+9.16 s | 12:11:35.12+15.34 s | 6.18 |
| KLBKalborn | 61.9 | 154 | 12:11:30.58+10.80 s | 12:11:38.26+18.48 s | 7.68 |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 23.4 | 38 | 12:11:24.05+4.27 s | 12:11:27.16+7.38 s | 3.11 |
| VKBValkenburg | 30.1 | 8 | 12:11:25.31+5.53 s | – | – |