ZELTINGEN-RACHTIG (DE)
Suspected quarry blast27 July 2017
- Magnitude
- 1.6ML
- Depth
- 9.5km ± 2.5
- Belgian time
- 10:56:002017-07-27
- UTC
- 08:56:002017-07-27
Main parameters
| Date and time | 2017-07-27 08:56:00 UTC 2017-07-27 10:56:00 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 49.959° N, 7.002° E Uncertainty ± 2.4 km |
| Depth of hypocenter | 9.5 ± 2.5 km |
| Event ID | ROB 5805 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-07-27 11:35:57 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
- 10
- Epicentral distance
- 57.5 – 173.2km
- Mean velocity, P wave
- 5.9km/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. Hypocenter at a depth of 9.5 km. P wave: 6 measurements, root-mean-square deviation 0.31 s. S wave: 4 measurements, root-mean-square deviation 0.18 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 | ||||||
| VIAVianden | 57.5 | 268 | 08:56:10.14+9.25 s | 08:56:18.01+17.12 s | 7.87 | 21.4 |
| KLBKalborn | 65.9 | 284 | 08:56:12.02+11.13 s | – | – | – |
| WLFWalferdange | 69.5 | 242 | 08:56:12.97+12.08 s | 08:56:21.07+20.18 s | 8.10 | – |
| HOUHouvegnez | 83.7 | 302 | 08:56:14.53+13.64 s | 08:56:25.13+24.24 s | 10.60 | – |
| MRGMont Rigi | 90.3 | 313 | 08:56:16.29+15.40 s | – | – | – |
| MEMHMembach | 101.2 | 316 | 08:56:18.00+17.11 s | 08:56:30.32+29.43 s | 12.32 | – |
| LCHLa Chartreuse | 125.4 | 308 | 08:56:20.75+19.86 s | – | – | – |
| CLAClavier | 131.8 | 294 | 08:56:23.34+22.45 s | 08:56:38.56+37.67 s | 15.22 | – |
| GESGesves | 144.8 | 290 | 08:56:25.30+24.41 s | 08:56:41.91+41.02 s | 16.61 | – |
| DOUDourbes | 173.2 | 276 | 08:56:28.76+27.87 s | 08:56:47.68+46.79 s | 18.92 | – |