WAIMES (BE)
Quarry blast25 April 2019
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 13:40:382019-04-25
- UTC
- 11:40:382019-04-25
Main parameters
| Date and time | 2019-04-25 11:40:38 UTC 2019-04-25 13:40:38 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.391° N, 6.127° E Uncertainty ± 3.4 km |
| Event ID | ROB 8080 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-04-25 14:37:16 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
- 7
- Epicentral distance
- 9.6 – 46.5km
- Mean velocity, P wave
- 5.2km/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: 7 measurements, root-mean-square deviation 0.26 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)6 stations | |||||
| HOUHouvegnez | 9.6 | 245 | 11:40:39.94+1.81 s | – | – |
| MRGMont Rigi | 13.9 | 345 | 11:40:40.60+2.47 s | 11:40:42.51+4.38 s | 1.91 |
| MEMSMembach | 25.7 | 341 | 11:40:42.71+4.58 s | – | – |
| MEMHMembach | 25.7 | 341 | 11:40:42.77+4.64 s | 11:40:45.75+7.62 s | 2.98 |
| KLBKalborn | 32.4 | 182 | 11:40:44.03+5.90 s | – | – |
| LCHLa Chartreuse | 46.5 | 307 | 11:40:47.42+9.29 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 43.8 | 342 | 11:40:46.03+7.90 s | – | – |
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