DURBUY (BE)
Quarry blast26 May 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:40:002020-05-26
- UTC
- 10:40:002020-05-26
Main parameters
| Date and time | 2020-05-26 10:40:00 UTC 2020-05-26 12:40:00 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.358° N, 5.554° E Uncertainty ± 0.9 km |
| Event ID | ROB 10105 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-26 13:12:14 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
- 8
- Epicentral distance
- 19.1 – 52.4km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.3km/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: 8 measurements, root-mean-square deviation 0.23 s. S wave: 5 measurements, root-mean-square deviation 0.32 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 | |||||
| CLAClavier | 19.1 | 291 | 10:40:03.55+3.11 s | 10:40:06.48+6.04 s | 2.93 |
| HOUHouvegnez | 32.1 | 91 | 10:40:05.98+5.54 s | – | – |
| RCHRochefort | 32.5 | 226 | 10:40:06.38+5.94 s | 10:40:10.61+10.17 s | 4.23 |
| GESGesves | 33.4 | 275 | 10:40:06.40+5.96 s | 10:40:11.10+10.66 s | 4.70 |
| MEMSMembach | 42.7 | 49 | 10:40:07.95+7.51 s | – | – |
| MEMHMembach | 42.7 | 49 | 10:40:08.25+7.81 s | 10:40:13.91+13.47 s | 5.66 |
| KLBKalborn | 48.9 | 126 | 10:40:08.92+8.48 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 52.4 | 31 | 10:40:10.17+9.73 s | 10:40:16.06+15.62 s | 5.89 |