MARCHE-EN-FAMENNE (BE)
Quarry blast20 May 2016
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 12:19:232016-05-20
- UTC
- 10:19:232016-05-20
Main parameters
| Date and time | 2016-05-20 10:19:23 UTC 2016-05-20 12:19:23 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.173° N, 5.261° E Uncertainty ± 3.0 km |
| Event ID | ROB 5504 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-05-20 12:30:20 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
- 3.2 – 81.1km
- Mean velocity, P wave
- 5.5km/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: 8 measurements, root-mean-square deviation 0.54 s. S wave: 4 measurements, root-mean-square deviation 0.14 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 | |||||
| RCHRochefort | 3.2 | 230 | 10:19:23.67+0.24 s | 10:19:24.00+0.57 s | 0.33 |
| GESGesves | 26.6 | 332 | 10:19:27.03+3.60 s | 10:19:31.17+7.74 s | 4.14 |
| CLAClavier | 27.5 | 6 | 10:19:27.80+4.37 s | – | – |
| MRDMaredsous | 38.0 | 292 | 10:19:29.85+6.42 s | 10:19:34.44+11.01 s | 4.59 |
| DOUDourbes | 48.4 | 260 | 10:19:31.46+8.03 s | 10:19:37.54+14.11 s | 6.08 |
| HOUHouvegnez | 56.7 | 69 | 10:19:33.09+9.66 s | – | – |
| MEMHMembach | 72.0 | 47 | 10:19:37.17+13.74 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 81.1 | 36 | 10:19:37.07+13.64 s | – | – |