OLNE (BE)
Quarry blast26 June 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:40:422020-06-26
- UTC
- 11:40:422020-06-26
Main parameters
| Date and time | 2020-06-26 11:40:42 UTC 2020-06-26 13:40:42 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.598° N, 5.716° E Uncertainty ± 0.8 km |
| Event ID | ROB 10380 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-26 16:37:49 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
- 6
- Epicentral distance
- 9.5 – 35.5km
- Mean velocity, P wave
- 6.1km/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: 6 measurements, root-mean-square deviation 0.19 s. S wave: 6 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)5 stations | |||||
| LCHLa Chartreuse | 9.5 | 299 | 11:40:44.55+1.63 s | 11:40:46.40+3.48 s | 1.85 |
| MEMHMembach | 20.8 | 87 | 11:40:46.52+3.60 s | 11:40:49.57+6.65 s | 3.05 |
| EBNEben-Emael | 22.3 | 353 | 11:40:47.07+4.15 s | 11:40:49.76+6.84 s | 2.69 |
| MRGMont Rigi | 27.2 | 111 | 11:40:48.00+5.08 s | 11:40:51.62+8.70 s | 3.62 |
| CLAClavier | 35.5 | 236 | 11:40:48.93+6.01 s | 11:40:54.16+11.24 s | 5.23 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 23.9 | 39 | 11:40:47.27+4.35 s | 11:40:51.04+8.12 s | 3.77 |