WALLERSHEIM (DE)
Quarry blast26 April 2018
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 12:54:042018-04-26
- UTC
- 10:54:042018-04-26
Main parameters
| Date and time | 2018-04-26 10:54:04 UTC 2018-04-26 12:54:04 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.190° N, 6.522° E Uncertainty ± 2.6 km |
| Event ID | ROB 6530 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-04-27 09:49:35 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
- 4
- Epicentral distance
- 31.2 – 64.2km
- Mean velocity, P wave
- 5.6km/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: 4 measurements, root-mean-square deviation 0.06 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)4 stations | |||||
| KLBKalborn | 31.2 | 252 | 10:54:10.04+5.14 s | – | – |
| VIAVianden | 36.4 | 219 | 10:54:11.14+6.24 s | – | – |
| MRGMont Rigi | 47.9 | 318 | 10:54:13.04+8.14 s | – | – |
| WLFWalferdange | 64.2 | 205 | 10:54:16.06+11.16 s | – | – |
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