BERTOGNE (BE)
Quarry blast22 August 2018
- Magnitude
- 1.8ML
- Depth
- 10.7km ± 5.5
- Belgian time
- 14:04:542018-08-22
- UTC
- 12:04:542018-08-22
Main parameters
| Date and time | 2018-08-22 12:04:54 UTC 2018-08-22 14:04:54 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.086° N, 5.653° E Uncertainty ± 1.3 km |
| Depth of hypocenter | 10.7 ± 5.5 km |
| Event ID | ROB 7130 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-08-22 14:35:16 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
- 4
- Epicentral distance
- 31.4 – 63.5km
- Mean velocity, P wave
- 6.1km/s
- Mean velocity, S wave
- 3.5km/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. Hypocenter at a depth of 10.7 km. P wave: 4 measurements, root-mean-square deviation 0.21 s. S wave: 4 measurements, root-mean-square deviation 0.12 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)4 stations | ||||||
| RCHRochefort | 31.4 | 284 | 12:05:00.47+5.51 s | 12:05:04.70+9.74 s | 4.23 | – |
| KLBKalborn | 32.7 | 87 | 12:05:00.61+5.65 s | 12:05:04.84+9.88 s | 4.23 | – |
| HOUHouvegnez | 39.0 | 40 | 12:05:02.14+7.18 s | 12:05:06.83+11.87 s | 4.69 | 48.5 |
| MEMHMembach | 63.5 | 23 | 12:05:05.77+10.81 s | 12:05:13.38+18.42 s | 7.61 | – |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry