CELLES (BE)
Quarry blast5 June 2019
- Magnitude
- 2.1ML
- Depth
- –
- Belgian time
- 13:00:512019-06-05
- UTC
- 11:00:512019-06-05
Main parameters
| Date and time | 2019-06-05 11:00:51 UTC 2019-06-05 13:00:51 Belgian time |
|---|---|
| Magnitude | ML 2.1 |
| Epicentral coordinates | 50.698° N, 3.409° E Uncertainty ± 1.5 km |
| Event ID | ROB 8210 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-06-05 13:27:56 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
- 30.7 – 137.7km
- Mean velocity, P wave
- 5.8km/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: 9 measurements, root-mean-square deviation 0.34 s. S wave: 5 measurements, root-mean-square deviation 0.22 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | 30.7 | 87 | 11:00:57.09+5.49 s | 11:01:01.28+9.68 s | 4.19 |
| SKQSteenkerque | 47.7 | 96 | 11:01:00.15+8.55 s | 11:01:05.87+14.27 s | 5.72 |
| BOUBougnies | 51.2 | 132 | 11:01:00.43+8.83 s | – | – |
| BRQBracquegnies | 56.8 | 115 | 11:01:01.40+9.80 s | – | – |
| RQRRonquières | 58.6 | 100 | 11:01:01.86+10.26 s | – | – |
| ZEVZevekote | 60.6 | 324 | 11:01:02.11+10.51 s | – | – |
| UCCBUccle | 68.0 | 80 | 11:01:03.43+11.83 s | 11:01:11.60+20.00 s | 8.17 |
| MRDMaredsous | 106.0 | 114 | 11:01:10.87+19.27 s | 11:01:22.64+31.04 s | 11.77 |
| DOUDourbes | 107.7 | 128 | 11:01:09.90+18.30 s | 11:01:23.28+31.68 s | 13.38 |
| GESGesves | 123.9 | 106 | 11:01:12.63+21.03 s | 11:01:29.78+38.18 s | 17.15 |
| CLAClavier | 137.7 | 102 | 11:01:14.87+23.27 s | 11:01:33.11+41.51 s | 18.24 |