SOUMAGNE (BE)
Quarry blast28 June 2018
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 13:33:402018-06-28
- UTC
- 11:33:402018-06-28
Main parameters
| Date and time | 2018-06-28 11:33:40 UTC 2018-06-28 13:33:40 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.615° N, 5.715° E Uncertainty ± 0.6 km |
| Event ID | ROB 6870 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-11 10:59:50 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
- 8
- Epicentral distance
- 8.7 – 83.2km
- Mean velocity, P wave
- 5.9km/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 0.08 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 | 8.7 | 288 | 11:33:42.14+1.86 s | – | – |
| MEMSMembach | 20.9 | 92 | 11:33:44.12+3.84 s | – | – |
| MRGMont Rigi | 28.0 | 114 | 11:33:45.36+5.08 s | 11:33:48.83+8.55 s | 3.47 |
| CLAClavier | 36.5 | 234 | 11:33:46.67+6.39 s | 11:33:51.17+10.89 s | 4.50 |
| GESGesves | 51.4 | 240 | 11:33:49.11+8.83 s | – | – |
| OPTOpitter | 55.6 | 354 | 11:33:49.97+9.69 s | – | – |
| DSLSDessel | 82.5 | 327 | 11:33:54.62+14.34 s | – | – |
| VIAVianden | 83.2 | 155 | 11:33:54.68+14.40 s | – | – |
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