BRAINE-LE-COMTE (BE)
Quarry blast10 May 2019
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:03:422019-05-10
- UTC
- 12:03:422019-05-10
Main parameters
| Date and time | 2019-05-10 12:03:42 UTC 2019-05-10 14:03:42 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.596° N, 4.084° E Uncertainty ± 3.2 km |
| Event ID | ROB 8145 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-05-10 14:35:55 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
- 6.0 – 107.3km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.4km/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: 8 measurements, root-mean-square deviation 0.38 s. S wave: 4 measurements, root-mean-square deviation 0.33 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)8 stations | |||||
| SKQSteenkerque | 6.0 | 357 | 12:03:43.51+0.87 s | 12:03:44.76+2.12 s | 1.25 |
| RQRRonquières | 10.0 | 83 | 12:03:44.18+1.54 s | – | – |
| BRQBracquegnies | 13.3 | 164 | 12:03:44.08+1.44 s | – | – |
| UCCBUccle | 29.7 | 41 | 12:03:48.38+5.74 s | 12:03:51.66+9.02 s | 3.28 |
| MRDMaredsous | 58.5 | 124 | 12:03:53.41+10.77 s | 12:04:00.21+17.57 s | 6.80 |
| DOUDourbes | 66.5 | 147 | 12:03:54.46+11.82 s | 12:04:01.98+19.34 s | 7.52 |
| CLAClavier | 88.6 | 102 | 12:03:58.42+15.78 s | – | – |
| LCHLa Chartreuse | 107.3 | 87 | 12:04:01.74+19.10 s | – | – |