DURBUY (BE)
Quarry blast24 November 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:13:172020-11-24
- UTC
- 11:13:172020-11-24
Main parameters
| Date and time | 2020-11-24 11:13:17 UTC 2020-11-24 12:13:17 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.336° N, 5.525° E Uncertainty ± 1.1 km |
| Event ID | ROB 11380 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-24 17:15:56 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
- 7
- Epicentral distance
- 18.4 – 49.2km
- Mean velocity, P wave
- 6.4km/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: 7 measurements, root-mean-square deviation 0.52 s. S wave: 7 measurements, root-mean-square deviation 0.60 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 | 18.4 | 300 | 11:13:21.84+3.88 s | 11:13:24.36+6.40 s | 2.52 |
| RCHRochefort | 29.3 | 227 | 11:13:23.08+5.12 s | 11:13:27.18+9.22 s | 4.10 |
| GESGesves | 31.7 | 280 | 11:13:22.84+4.88 s | 11:13:29.46+11.50 s | 6.62 |
| HOUHouvegnez | 34.2 | 86 | 11:13:23.82+5.86 s | 11:13:28.66+10.70 s | 4.84 |
| MRGMont Rigi | 43.7 | 63 | 11:13:25.45+7.49 s | 11:13:30.93+12.97 s | 5.48 |
| MEMHMembach | 45.9 | 48 | 11:13:26.33+8.37 s | 11:13:32.11+14.15 s | 5.78 |
| KLBKalborn | 49.2 | 122 | 11:13:27.31+9.35 s | 11:13:32.89+14.93 s | 5.58 |