WAIMES (BE)
Quarry blast25 February 2020
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 15:11:092020-02-25
- UTC
- 14:11:092020-02-25
Main parameters
| Date and time | 2020-02-25 14:11:09 UTC 2020-02-25 15:11:09 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.426° N, 6.087° E Uncertainty ± 1.0 km |
| Event ID | ROB 9330 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-02-25 15:17:12 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
- 9.5 – 112km
- Mean velocity, P wave
- 6.2km/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 0.31 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 | |||||
| MRGMont Rigi | 9.5 | 355 | 14:11:11.50+1.84 s | 14:11:12.65+2.99 s | 1.15 |
| HOUHouvegnez | 9.9 | 216 | 14:11:11.58+1.92 s | – | – |
| MEMSMembach | 21.1 | 345 | 14:11:13.76+4.10 s | – | – |
| MEMHMembach | 21.1 | 345 | 14:11:13.76+4.10 s | 14:11:16.67+7.01 s | 2.91 |
| KLBKalborn | 36.3 | 177 | 14:11:16.26+6.60 s | – | – |
| CLAClavier | 55.8 | 270 | 14:11:19.01+9.35 s | – | – |
| GESGesves | 71.2 | 267 | 14:11:22.28+12.62 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 39.2 | 344 | 14:11:16.94+7.28 s | 14:11:21.64+11.98 s | 4.70 |
| Network not specified1 station | |||||
| MOLIOMol | 112* | – | 14:11:27.90+18.24 s | – | – |
* Distance from the catalogue, rounded to the kilometre: the coordinates of the station are missing from it.