FRAITURE (BE)
Quarry blast26 February 2019
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 16:08:502019-02-26
- UTC
- 15:08:502019-02-26
Main parameters
| Date and time | 2019-02-26 15:08:50 UTC 2019-02-26 16:08:50 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.483° N, 5.613° E Uncertainty ± 0.7 km |
| Event ID | ROB 7895 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-02-26 16:21:38 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
- 17.4 – 55.3km
- Mean velocity, P wave
- 5.8km/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: 9 measurements, root-mean-square deviation 0.19 s. S wave: 6 measurements, root-mean-square deviation 0.36 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 | |||||
| LCHLa Chartreuse | 17.4 | 357 | 15:08:53.75+2.87 s | 15:08:57.08+6.20 s | 3.33 |
| CLAClavier | 23.2 | 252 | 15:08:54.76+3.88 s | 15:08:58.36+7.48 s | 3.60 |
| HOUHouvegnez | 31.3 | 117 | 15:08:56.57+5.69 s | 15:09:00.98+10.10 s | 4.41 |
| MEMHMembach | 31.4 | 63 | 15:08:56.37+5.49 s | 15:09:00.42+9.54 s | 4.05 |
| MEMSMembach | 31.4 | 63 | 15:08:56.47+5.59 s | – | – |
| MRGMont Rigi | 32.9 | 84 | 15:08:56.70+5.82 s | 15:09:01.13+10.25 s | 4.43 |
| GESGesves | 38.9 | 254 | 15:08:57.36+6.48 s | 15:09:03.59+12.71 s | 6.23 |
| KLBKalborn | 55.3 | 140 | 15:09:00.63+9.75 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 38.6 | 36 | 15:08:57.89+7.01 s | – | – |