BRAINE-LE-COMTE (BE)
Quarry blast15 January 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:19:042020-01-15
- UTC
- 10:19:042020-01-15
Main parameters
| Date and time | 2020-01-15 10:19:04 UTC 2020-01-15 11:19:04 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.654° N, 4.173° E Uncertainty ± 0.4 km |
| Event ID | ROB 9120 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-15 11:25:46 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
- 6.5 – 57.6km
- Mean velocity, P wave
- 6.0km/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 0.06 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 | |||||
| RQRRonquières | 6.5 | 146 | 10:19:06.58+1.59 s | – | – |
| SKQSteenkerque | 6.6 | 265 | 10:19:06.40+1.41 s | 10:19:07.17+2.18 s | 0.77 |
| UCCBUccle | 20.6 | 40 | 10:19:08.85+3.86 s | – | – |
| TGATangissart | 25.3 | 102 | 10:19:09.61+4.62 s | 10:19:12.62+7.63 s | 3.01 |
| MRDMaredsous | 57.6 | 133 | 10:19:14.99+10.00 s | – | – |
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