MOMPACH (LU)
Quarry blast14 July 2020
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 12:03:492020-07-14
- UTC
- 10:03:492020-07-14
Main parameters
| Date and time | 2020-07-14 10:03:49 UTC 2020-07-14 12:03:49 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 49.737° N, 6.421° E Uncertainty ± 2.0 km |
| Event ID | ROB 10460 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-07-14 17:09:39 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
- 27.1 – 119.7km
- Mean velocity, P wave
- 6.0km/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: 7 measurements, root-mean-square deviation 0.33 s. S wave: 7 measurements, root-mean-square deviation 0.67 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)6 stations | |||||
| VIAVianden | 27.1 | 324 | 10:03:54.23+4.42 s | 10:03:58.67+8.86 s | 4.44 |
| KLBKalborn | 46.2 | 331 | 10:03:57.68+7.87 s | 10:04:04.38+14.57 s | 6.70 |
| HOUHouvegnez | 74.8 | 337 | 10:04:02.05+12.24 s | 10:04:11.97+22.16 s | 9.92 |
| MEMHMembach | 101.4 | 343 | 10:04:07.03+17.22 s | 10:04:21.34+31.53 s | 14.31 |
| CLAClavier | 110.3 | 314 | 10:04:08.74+18.93 s | 10:04:22.36+32.55 s | 13.62 |
| GESGesves | 119.7 | 308 | 10:04:10.41+20.60 s | 10:04:26.29+36.48 s | 15.88 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 119.5 | 343 | 10:04:09.74+19.93 s | 10:04:24.79+34.98 s | 15.05 |