SCHOELLER (DE)
Quarry blast23 July 2019
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 11:41:092019-07-23
- UTC
- 09:41:092019-07-23
Main parameters
| Date and time | 2019-07-23 09:41:09 UTC 2019-07-23 11:41:09 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 51.228° N, 7.052° E Uncertainty ± 2.6 km |
| Event ID | ROB 8500 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-12 14:38:45 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
- 84.0 – 142.1km
- Mean velocity, P wave
- 5.5km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 6 measurements, root-mean-square deviation 0.36 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | |||||
| MEMHMembach | 100.6 | 227 | 09:41:26.96+17.20 s | 09:41:38.73+28.97 s | 11.77 |
| MEMSMembach | 100.6 | 227 | 09:41:26.98+17.22 s | 09:41:39.02+29.26 s | 12.04 |
| MRGMont Rigi | 105.3 | 221 | 09:41:27.76+18.00 s | – | – |
| EBNEben-Emael | 107.7 | 244 | 09:41:29.21+19.45 s | – | – |
| HOUHouvegnez | 122.1 | 218 | 09:41:30.33+20.57 s | 09:41:45.23+35.47 s | 14.90 |
| KLBKalborn | 142.1 | 208 | 09:41:33.43+23.67 s | 09:41:50.28+40.52 s | 16.85 |
| Dutch seismic network (KNMI)2 stations | |||||
| WTSBWinterswijk New | 84.0 | 348 | 09:41:24.46+14.70 s | – | – |
| HGNHeimansgroeve | 94.1 | 237 | 09:41:25.91+16.15 s | 09:41:37.50+27.74 s | 11.59 |