FERNELMONT (BE)
Quarry blast31 March 2017
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:13:102017-03-31
- UTC
- 12:13:102017-03-31
Main parameters
| Date and time | 2017-03-31 12:13:10 UTC 2017-03-31 14:13:10 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.573° N, 4.968° E Uncertainty ± 4.0 km |
| Event ID | ROB 5665 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-03-31 16:13:13 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
- 7
- Epicentral distance
- 22.5 – 59.4km
- Mean velocity, P wave
- 5.4km/s
- Mean velocity, S wave
- 3.4km/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: 6 measurements, root-mean-square deviation 0.25 s. S wave: 5 measurements, root-mean-square deviation 0.45 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 | |||||
| GESGesves | 22.5 | 158 | 12:13:13.68+3.51 s | 12:13:15.53+5.36 s | 1.85 |
| CLAClavier | 29.2 | 126 | 12:13:15.46+5.29 s | 12:13:18.58+8.41 s | 3.12 |
| MRDMaredsous | 33.3 | 205 | 12:13:15.96+5.79 s | 12:13:19.83+9.66 s | 3.87 |
| SNFSeneffe | 49.0 | 262 | 12:13:18.92+8.75 s | – | – |
| RCHRochefort | 50.0 | 158 | 12:13:18.56+8.39 s | 12:13:24.85+14.68 s | 6.29 |
| RQRRonquières | 52.8 | 274 | 12:13:19.31+9.14 s | – | – |
| DOUDourbes | 59.4 | 207 | – | 12:13:26.98+16.81 s | – |