LA-ROCHE-EN-ARDENNE (BE)
Quarry blast29 September 2022
- Magnitude
- 1.5ML
- Depth
- 1.0km ± 2.5
- Belgian time
- 15:34:222022-09-29
- UTC
- 13:34:222022-09-29
Main parameters
| Date and time | 2022-09-29 13:34:22 UTC 2022-09-29 15:34:22 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.186° N, 5.623° E Uncertainty ± 1.2 km |
| Depth of hypocenter | 1.0 ± 2.5 km |
| Event ID | ROB 17265 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-04 09:24:10 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
- 11
- Epicentral distance
- 28.5 – 74.2km
- Mean velocity, P wave
- 6.3km/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. Hypocenter at a depth of 1.0 km. P wave: 11 measurements, root-mean-square deviation 0.29 s. S wave: 8 measurements, root-mean-square deviation 0.95 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)11 stations | ||||||
| RCHRochefort | 28.5 | 263 | 13:34:27.33+4.53 s | 13:34:31.32+8.52 s | 3.99 | – |
| HOUHouvegnez | 33.0 | 55 | 13:34:28.48+5.68 s | – | – | – |
| CLAClavier | 34.6 | 319 | 13:34:28.34+5.54 s | 13:34:32.83+10.03 s | 4.49 | – |
| KLBKalborn | 36.0 | 105 | 13:34:29.51+6.71 s | 13:34:36.43+13.63 s | 6.92 | – |
| GESGesves | 44.2 | 300 | 13:34:30.09+7.29 s | 13:34:36.00+13.20 s | 5.91 | – |
| STISart Tilman | 44.4 | 355 | 13:34:30.49+7.69 s | – | – | 68.8 |
| MRGMont Rigi | 48.4 | 41 | 13:34:31.11+8.31 s | 13:34:37.14+14.34 s | 6.03 | 28.3 |
| MEMSMembach | 54.5 | 30 | 13:34:32.13+9.33 s | 13:34:39.25+16.45 s | 7.12 | 11.8 |
| TNLTernell | 57.3 | 39 | 13:34:32.68+9.88 s | – | – | – |
| MRDMaredsous | 62.4 | 282 | 13:34:33.35+10.55 s | 13:34:41.50+18.70 s | 8.15 | 7.0 |
| DOUDourbes | 74.2 | 263 | 13:34:35.04+12.24 s | 13:34:45.17+22.37 s | 10.13 | 14.3 |