LESSINES (BE)
Quarry blast24 March 2020
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:49:342020-03-24
- UTC
- 13:49:342020-03-24
Main parameters
| Date and time | 2020-03-24 13:49:34 UTC 2020-03-24 14:49:34 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.727° N, 3.869° E Uncertainty ± 5.0 km |
| Event ID | ROB 9600 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-24 15:36:21 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
- 11
- Epicentral distance
- 2.5 – 115.6km
- Mean velocity, P wave
- 5.8km/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 0.36 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 | |||||
| LESLessines | 2.5 | 225 | 13:49:34.71+0.39 s | 13:49:34.88+0.56 s | 0.17 |
| SKQSteenkerque | 17.3 | 120 | 13:49:37.51+3.19 s | 13:49:39.34+5.02 s | 1.83 |
| RQRRonquières | 28.6 | 118 | 13:49:39.21+4.89 s | – | – |
| BRQBracquegnies | 33.3 | 145 | 13:49:40.85+6.53 s | – | – |
| UCCBUccle | 35.5 | 77 | 13:49:40.60+6.28 s | – | – |
| TGATangissart | 48.2 | 106 | 13:49:42.63+8.31 s | – | – |
| DOUDourbes | 87.2 | 143 | 13:49:50.31+15.99 s | – | – |
| GESGesves | 94.4 | 113 | 13:49:50.54+16.22 s | – | – |
| DSLBDessel | 101.1 | 56 | 13:49:51.52+17.20 s | – | – |
| CLAClavier | 107.2 | 108 | 13:49:52.60+18.28 s | – | – |
| RCHRochefort | 115.6 | 123 | 13:49:54.47+20.15 s | – | – |
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