LESSINES (BE)
Quarry blast16 January 2020
- Magnitude
- 0.6ML
- Depth
- 1.7km ± 7.3
- Belgian time
- 13:14:042020-01-16
- UTC
- 12:14:042020-01-16
Main parameters
| Date and time | 2020-01-16 12:14:04 UTC 2020-01-16 13:14:04 Belgian time |
|---|---|
| Magnitude | ML 0.6 |
| Epicentral coordinates | 50.713° N, 3.845° E Uncertainty ± 15.8 km |
| Depth of hypocenter | 1.7 ± 7.3 km |
| Event ID | ROB 9130 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-16 13:40:42 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
- 8
- Epicentral distance
- 0.3 – 108.3km
- Mean velocity, P wave
- 5.2km/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 1.7 km. P wave: 8 measurements, root-mean-square deviation 0.82 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)8 stations | ||||||
| LESLessines | 0.3 | 208 | 12:14:04.38+0.10 s | – | – | – |
| SKQSteenkerque | 18.1 | 113 | 12:14:07.11+2.83 s | 12:14:09.39+5.11 s | 2.28 | – |
| RQRRonquières | 29.4 | 114 | 12:14:08.47+4.19 s | – | – | – |
| BRQBracquegnies | 33.0 | 141 | 12:14:09.68+5.40 s | – | – | – |
| TGATangissart | 49.4 | 104 | 12:14:10.84+6.56 s | – | – | – |
| DOUDourbes | 87.0 | 142 | 12:14:20.22+15.94 s | – | – | – |
| GESGesves | 95.3 | 112 | 12:14:22.42+18.14 s | – | – | – |
| CLAClavier | 108.3 | 107 | 12:14:23.81+19.53 s | 12:14:37.83+33.55 s | 14.02 | 1.0 |
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