DURBUY (BE)
Quarry blast10 May 2021
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 12:45:532021-05-10
- UTC
- 10:45:532021-05-10
Main parameters
| Date and time | 2021-05-10 10:45:53 UTC 2021-05-10 12:45:53 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.345° N, 5.564° E Uncertainty ± 1.1 km |
| Event ID | ROB 13370 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-05-10 16:54:13 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
- 5
- Epicentral distance
- 20.4 – 47.4km
- Mean velocity, P wave
- 5.9km/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: 5 measurements, root-mean-square deviation 0.32 s. S wave: 5 measurements, root-mean-square deviation 0.22 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 | |||||
| CLAClavier | 20.4 | 294 | 10:45:57.00+3.47 s | 10:46:00.20+6.67 s | 3.20 |
| GESGesves | 34.3 | 278 | 10:45:59.69+6.16 s | 10:46:04.31+10.78 s | 4.62 |
| MRGMont Rigi | 40.7 | 63 | 10:46:00.98+7.45 s | 10:46:06.03+12.50 s | 5.05 |
| MEMSMembach | 43.2 | 47 | 10:46:00.69+7.16 s | 10:46:06.99+13.46 s | 6.30 |
| KLBKalborn | 47.4 | 125 | 10:46:02.25+8.72 s | 10:46:07.72+14.19 s | 5.47 |