ENGHIEN (BE)
Quarry blast12 November 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:39:012020-11-12
- UTC
- 12:39:012020-11-12
Main parameters
| Date and time | 2020-11-12 12:39:01 UTC 2020-11-12 13:39:01 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.692° N, 4.081° E Uncertainty ± 1.6 km |
| Event ID | ROB 11295 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-12 18:58:21 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
- 4.8 – 32.6km
- 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: 5 measurements, root-mean-square deviation 0.27 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 | |||||
| SKQSteenkerque | 4.8 | 181 | 12:39:02.32+1.13 s | 12:39:02.90+1.71 s | 0.58 |
| RQRRonquières | 14.0 | 133 | 12:39:03.96+2.77 s | 12:39:06.01+4.82 s | 2.05 |
| LESLessines | 17.0 | 277 | 12:39:04.19+3.00 s | 12:39:06.90+5.71 s | 2.71 |
| SNFSeneffe | 24.8 | 144 | 12:39:05.16+3.97 s | – | – |
| TGATangissart | 32.6 | 107 | 12:39:07.30+6.11 s | – | – |
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