OLNE (BE)
Quarry blast29 April 2016
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 13:52:492016-04-29
- UTC
- 11:52:492016-04-29
Main parameters
| Date and time | 2016-04-29 11:52:49 UTC 2016-04-29 13:52:49 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.577° N, 5.718° E Uncertainty ± 2.3 km |
| Event ID | ROB 5485 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-04-29 15:56:05 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
- 12
- Epicentral distance
- 10.9 – 106.1km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.3km/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: 12 measurements, root-mean-square deviation 0.33 s. S wave: 5 measurements, root-mean-square deviation 0.11 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)11 stations | |||||
| LCHLa Chartreuse | 10.9 | 310 | 11:52:50.94+1.18 s | 11:52:52.79+3.03 s | 1.85 |
| STISart Tilman | 11.0 | 274 | 11:52:51.06+1.30 s | – | – |
| MEMSMembach | 21.0 | 80 | 11:52:53.15+3.39 s | – | – |
| MEMHMembach | 21.0 | 80 | 11:52:53.15+3.39 s | 11:52:55.90+6.14 s | 2.75 |
| EBNEben-Emael | 24.7 | 353 | 11:52:53.37+3.61 s | 11:52:56.76+7.00 s | 3.39 |
| HOUHouvegnez | 32.0 | 140 | 11:52:55.60+5.84 s | – | – |
| CLAClavier | 34.3 | 239 | 11:52:55.58+5.82 s | – | – |
| GESGesves | 49.6 | 245 | 11:52:58.61+8.85 s | 11:53:04.65+14.89 s | 6.04 |
| RCHRochefort | 58.5 | 217 | 11:53:00.17+10.41 s | – | – |
| DOUDourbes | 96.3 | 237 | 11:53:06.34+16.58 s | – | – |
| WLFWalferdange | 106.1 | 163 | 11:53:07.74+17.98 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 25.7 | 36 | 11:52:53.75+3.99 s | 11:52:57.40+7.64 s | 3.65 |