CELLES (BE)
Quarry blast28 October 2019
- Magnitude
- 2.2ML
- Depth
- –
- Belgian time
- 12:59:572019-10-28
- UTC
- 11:59:572019-10-28
Main parameters
| Date and time | 2019-10-28 11:59:57 UTC 2019-10-28 12:59:57 Belgian time |
|---|---|
| Magnitude | ML 2.2 |
| Epicentral coordinates | 50.677° N, 3.393° E Uncertainty ± 4.0 km |
| Event ID | ROB 8785 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-10-28 13:46:08 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
- 9
- Epicentral distance
- 32.0 – 124.4km
- 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: 8 measurements, root-mean-square deviation 0.40 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)9 stations | |||||
| LESLessines | 32.0 | 83 | 12:00:02.60+5.60 s | 12:00:07.10+10.10 s | 4.50 |
| SKQSteenkerque | 48.7 | 93 | 12:00:05.26+8.26 s | 12:00:11.35+14.35 s | 6.09 |
| BOUBougnies | 50.6 | 129 | 12:00:05.72+8.72 s | – | – |
| BRQBracquegnies | 57.0 | 112 | 12:00:06.48+9.48 s | – | – |
| RQRRonquières | 59.4 | 97 | 12:00:06.82+9.82 s | – | – |
| UCCBUccle | 69.6 | 79 | 12:00:09.92+12.92 s | – | – |
| MRDMaredsous | 106.1 | 113 | 12:00:15.38+18.38 s | – | – |
| DOUDourbes | 107.2 | 127 | 12:00:15.20+18.20 s | – | – |
| GESGesves | 124.4 | 104 | 12:00:17.55+20.55 s | – | – |