OLNE (BE)
Quarry blast6 March 2020
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 13:38:322020-03-06
- UTC
- 12:38:322020-03-06
Main parameters
| Date and time | 2020-03-06 12:38:32 UTC 2020-03-06 13:38:32 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.603° N, 5.709° E Uncertainty ± 1.0 km |
| Event ID | ROB 9415 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-06 13:44:39 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
- 8.8 – 50.3km
- Mean velocity, P wave
- 5.8km/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 0.24 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 | |||||
| LCHLa Chartreuse | 8.8 | 298 | 12:38:33.84+1.20 s | 12:38:36.18+3.54 s | 2.34 |
| MEMSMembach | 21.3 | 88 | 12:38:36.53+3.89 s | – | – |
| MEMHMembach | 21.3 | 88 | 12:38:36.55+3.91 s | 12:38:39.78+7.14 s | 3.23 |
| EBNEben-Emael | 21.7 | 354 | 12:38:36.55+3.91 s | – | – |
| HOUHouvegnez | 34.8 | 143 | 12:38:38.85+6.21 s | – | – |
| CLAClavier | 35.4 | 235 | 12:38:38.99+6.35 s | 12:38:43.85+11.21 s | 4.86 |
| GESGesves | 50.3 | 241 | 12:38:41.11+8.47 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 23.9 | 41 | 12:38:37.30+4.66 s | – | – |
| VKBValkenburg | 29.9 | 10 | 12:38:38.04+5.40 s | – | – |
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