GEROLSTEIN (DE)
Quarry blast1 July 2019
- Magnitude
- 1.6ML
- Depth
- 10.0km ± 21.4
- Belgian time
- 10:53:512019-07-01
- UTC
- 08:53:512019-07-01
Main parameters
| Date and time | 2019-07-01 08:53:51 UTC 2019-07-01 10:53:51 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.203° N, 6.664° E Uncertainty ± 17.3 km |
| Depth of hypocenter | 10.0 ± 21.4 km |
| Event ID | ROB 8300 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-02 08:18:49 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
- 11
- Epicentral distance
- 41.3 – 692.3km
- Mean velocity, P wave
- 2.6km/s
- Mean velocity, S wave
- 2.3km/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. Hypocenter at a depth of 10.0 km. P wave: 8 measurements, root-mean-square deviation 5.73 s. S wave: 7 measurements, root-mean-square deviation 3.36 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)10 stations | ||||||
| KLBKalborn | 41.3 | 254 | 08:53:58.16+6.37 s | 08:54:04.40+12.61 s | 6.24 | 30.1 |
| VIAVianden | 44.5 | 228 | 08:53:58.66+6.87 s | 08:54:05.09+13.30 s | 6.43 | 28.9 |
| HOUHouvegnez | 49.9 | 290 | 08:53:47.60−4.19 s | 08:54:07.27+15.48 s | 19.67 | 19.9 |
| MRGMont Rigi | 54.1 | 309 | 08:53:59.41+7.62 s | 08:54:07.51+15.72 s | 8.10 | – |
| MEMSMembach | 64.8 | 314 | 08:54:02.29+10.50 s | 08:54:09.66+17.87 s | 7.37 | 30.7 |
| MEMHMembach | 64.8 | 314 | 08:54:11.92+20.13 s | – | – | – |
| WLFWalferdange | 70.4 | 212 | – | 08:54:12.72+20.93 s | – | – |
| LCHLa Chartreuse | 89.9 | 303 | 08:54:18.87+27.08 s | – | – | – |
| GESGesves | 114.2 | 281 | 08:54:29.59+37.80 s | 08:54:25.98+34.19 s | −3.61 | – |
| DOUDourbes | 148.3 | 266 | 08:54:16.28+24.49 s | 08:54:35.69+43.90 s | 19.41 | 4.4 |
| British Geological Survey (United Kingdom)1 station | ||||||
| STNCSTOKE | 692.3 | 301 | 08:55:35.12+103.33 s | – | – | – |