GESVES (BE)
Quarry blast16 January 2019
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:25:582019-01-16
- UTC
- 13:25:582019-01-16
Main parameters
| Date and time | 2019-01-16 13:25:58 UTC 2019-01-16 14:25:58 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.443° N, 5.006° E Uncertainty ± 1.1 km |
| Event ID | ROB 7650 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-01-17 12:32:37 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
- 8.7 – 76.2km
- Mean velocity, P wave
- 5.6km/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 0.34 s. S wave: 7 measurements, root-mean-square deviation 0.33 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)8 stations | |||||
| GESGesves | 8.7 | 138 | 13:25:59.92+1.39 s | 13:26:00.66+2.13 s | 0.74 |
| CLAClavier | 21.2 | 97 | 13:26:02.40+3.87 s | 13:26:04.84+6.31 s | 2.44 |
| MRDMaredsous | 23.1 | 227 | 13:26:02.97+4.44 s | 13:26:05.36+6.83 s | 2.39 |
| RCHRochefort | 35.7 | 154 | 13:26:05.42+6.89 s | 13:26:09.88+11.35 s | 4.46 |
| DOUDourbes | 48.6 | 217 | 13:26:07.88+9.35 s | 13:26:13.28+14.75 s | 5.40 |
| UCCBUccle | 60.3 | 311 | 13:26:09.15+10.62 s | – | – |
| MEMSMembach | 73.5 | 75 | 13:26:11.50+12.97 s | 13:26:20.41+21.88 s | 8.91 |
| MRGMont Rigi | 76.2 | 84 | 13:26:11.76+13.23 s | 13:26:21.65+23.12 s | 9.89 |