ENGIS (BE)
Quarry blast24 March 2020
- Magnitude
- 1.5ML
- Depth
- 5.3km ± 5.7
- Belgian time
- 13:34:142020-03-24
- UTC
- 12:34:142020-03-24
Main parameters
| Date and time | 2020-03-24 12:34:14 UTC 2020-03-24 13:34:14 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.585° N, 5.431° E Uncertainty ± 2.5 km |
| Depth of hypocenter | 5.3 ± 5.7 km |
| Event ID | ROB 9585 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-24 16:07:58 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
- 13
- Epicentral distance
- 9.4 – 90.8km
- Mean velocity, P wave
- 7.2km/s
- Mean velocity, S wave
- 3.6km/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 5.3 km. P wave: 12 measurements, root-mean-square deviation 2.74 s. S wave: 10 measurements, root-mean-square deviation 0.65 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)12 stations | |||||
| STISart Tilman | 9.4 | 92 | 12:34:15.70+1.09 s | 12:34:17.87+3.26 s | 2.17 |
| LCHLa Chartreuse | 13.3 | 63 | 12:34:16.69+2.08 s | 12:34:18.98+4.37 s | 2.29 |
| CLAClavier | 20.6 | 206 | 12:34:17.59+2.98 s | 12:34:20.61+6.00 s | 3.02 |
| GESGesves | 33.1 | 228 | 12:34:20.04+5.43 s | 12:34:25.46+10.85 s | 5.42 |
| MEMSMembach | 41.1 | 86 | 12:34:22.16+7.55 s | 12:34:27.65+13.04 s | 5.49 |
| MRGMont Rigi | 46.4 | 100 | 12:34:22.39+7.78 s | 12:34:28.32+13.71 s | 5.93 |
| HOUHouvegnez | 48.2 | 122 | – | 12:34:28.17+13.56 s | – |
| RCHRochefort | 50.0 | 197 | 12:34:23.38+8.77 s | 12:34:30.31+15.70 s | 6.93 |
| MRDMaredsous | 56.7 | 236 | 12:34:22.75+8.14 s | – | – |
| KLBKalborn | 72.4 | 138 | 12:34:26.76+12.15 s | 12:34:36.14+21.53 s | 9.38 |
| DOUDourbes | 80.7 | 228 | 12:34:30.00+15.39 s | 12:34:37.71+23.10 s | 7.71 |
| VIAVianden | 90.8 | 142 | 12:34:22.43+7.82 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| VKBValkenburg | 40.1 | 38 | 12:34:27.53+12.92 s | – | – |
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