FERNELMONT (BE)
Quarry blast24 January 2019
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:23:572019-01-24
- UTC
- 13:23:572019-01-24
Main parameters
| Date and time | 2019-01-24 13:23:57 UTC 2019-01-24 14:23:57 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.515° N, 4.971° E Uncertainty ± 4.2 km |
| Event ID | ROB 7715 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-01-24 14:46:30 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
- 16.7 – 93.3km
- Mean velocity, P wave
- 5.5km/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 0.23 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 | 16.7 | 150 | 13:24:00.47+2.58 s | – | – |
| CLAClavier | 25.9 | 114 | 13:24:02.41+4.52 s | – | – |
| MRDMaredsous | 27.8 | 211 | 13:24:02.90+5.01 s | – | – |
| RCHRochefort | 44.0 | 155 | 13:24:05.55+7.66 s | – | – |
| DOUDourbes | 53.9 | 210 | 13:24:07.68+9.79 s | – | – |
| SKQSteenkerque | 64.8 | 284 | 13:24:09.02+11.13 s | – | – |
| KLBKalborn | 93.3 | 119 | 13:24:14.72+16.83 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.4 | 67 | 13:24:10.63+12.74 s | – | – |
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