LA ROCHE-EN-ARDENNE (BE)
Quarry blast19 March 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 16:54:212020-03-19
- UTC
- 15:54:212020-03-19
Main parameters
| Date and time | 2020-03-19 15:54:21 UTC 2020-03-19 16:54:21 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.194° N, 5.595° E Uncertainty ± 0.5 km |
| Event ID | ROB 9545 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-19 17:00:48 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
- 26.7 – 88.9km
- Mean velocity, P wave
- 5.9km/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: 11 measurements, root-mean-square deviation 0.07 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)11 stations | |||||
| RCHRochefort | 26.7 | 261 | 15:54:26.48+4.81 s | 15:54:29.72+8.05 s | 3.24 |
| CLAClavier | 32.6 | 320 | 15:54:27.50+5.83 s | – | – |
| HOUHouvegnez | 34.2 | 59 | 15:54:27.64+5.97 s | – | – |
| KLBKalborn | 38.2 | 106 | 15:54:28.61+6.94 s | 15:54:32.95+11.28 s | 4.34 |
| GESGesves | 42.0 | 301 | 15:54:29.12+7.45 s | – | – |
| MRGMont Rigi | 49.0 | 44 | 15:54:30.26+8.59 s | – | – |
| MEMHMembach | 54.7 | 32 | 15:54:31.28+9.61 s | – | – |
| MEMSMembach | 54.7 | 32 | 15:54:31.28+9.61 s | – | – |
| MRDMaredsous | 60.2 | 282 | 15:54:32.08+10.41 s | – | – |
| DOUDourbes | 72.4 | 262 | 15:54:34.22+12.55 s | 15:54:43.43+21.76 s | 9.21 |
| TGATangissart | 88.9 | 301 | 15:54:37.01+15.34 s | – | – |
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