FERNELMONT (BE)
Quarry blast18 January 2018
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:21:492018-01-18
- UTC
- 13:21:492018-01-18
Main parameters
| Date and time | 2018-01-18 13:21:49 UTC 2018-01-18 14:21:49 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.514° N, 4.972° E Uncertainty ± 0.8 km |
| Event ID | ROB 6235 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-01-22 09:08:17 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
- 16.5 – 75.5km
- Mean velocity, P wave
- 5.7km/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: 7 measurements, root-mean-square deviation 0.19 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 | 16.5 | 150 | 13:21:52.48+2.59 s | – | – |
| CLAClavier | 25.7 | 114 | 13:21:54.58+4.69 s | 13:21:57.92+8.03 s | 3.34 |
| UCCSUccle | 53.5 | 306 | 13:21:59.25+9.36 s | – | – |
| DOUDourbes | 53.8 | 210 | 13:21:59.51+9.62 s | 13:22:05.98+16.09 s | 6.47 |
| RQRRonquières | 53.9 | 281 | 13:21:59.31+9.42 s | – | – |
| SKQSteenkerque | 64.9 | 284 | 13:22:00.94+11.05 s | – | – |
| HOUHouvegnez | 75.5 | 103 | 13:22:03.07+13.18 s | – | – |
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