PROFONDEVILLE (BE)
Quarry blast19 June 2019
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:35:122019-06-19
- UTC
- 12:35:122019-06-19
Main parameters
| Date and time | 2019-06-19 12:35:12 UTC 2019-06-19 14:35:12 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.377° N, 4.843° E Uncertainty ± 0.5 km |
| Event ID | ROB 8275 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-06-20 14:48:27 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
- 9.9 – 88.3km
- Mean velocity, P wave
- 5.5km/s
- Mean velocity, S wave
- 3.2km/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. 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 0.17 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)7 stations | |||||
| MRDMaredsous | 9.9 | 213 | 12:35:14.47+1.88 s | 12:35:16.00+3.41 s | 1.53 |
| GESGesves | 17.4 | 87 | 12:35:15.91+3.32 s | 12:35:18.02+5.43 s | 2.11 |
| CLAClavier | 33.0 | 82 | 12:35:18.59+6.00 s | 12:35:23.01+10.42 s | 4.42 |
| DOUDourbes | 36.0 | 210 | 12:35:19.20+6.61 s | 12:35:23.74+11.15 s | 4.54 |
| RQRRonquières | 50.7 | 300 | 12:35:21.48+8.89 s | – | – |
| BRQBracquegnies | 51.6 | 283 | 12:35:21.53+8.94 s | – | – |
| SKQSteenkerque | 62.0 | 299 | 12:35:23.31+10.72 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 88.3 | 60 | 12:35:29.38+16.79 s | – | – |