SCHOELLER (DE)
Quarry blast31 July 2019
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 09:40:462019-07-31
- UTC
- 07:40:462019-07-31
Main parameters
| Date and time | 2019-07-31 07:40:46 UTC 2019-07-31 09:40:46 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 51.243° N, 7.037° E Uncertainty ± 3.4 km |
| Event ID | ROB 8505 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-12 14:39:36 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
- 6
- Epicentral distance
- 94.1 – 143.1km
- Mean velocity, P wave
- 6.6km/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: 4 measurements, root-mean-square deviation 0.14 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)5 stations | |||||
| MEMHMembach | 100.9 | 226 | 07:41:03.91+17.39 s | – | – |
| MEMSMembach | 100.9 | 226 | 07:41:03.96+17.44 s | – | – |
| MRGMont Rigi | 105.9 | 220 | 07:41:04.99+18.47 s | – | – |
| HOUHouvegnez | 122.8 | 217 | 07:41:07.78+21.26 s | – | – |
| KLBKalborn | 143.1 | 208 | 07:41:09.66+23.14 s | 07:41:27.86+41.34 s | 18.20 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 94.1 | 236 | 07:41:03.16+16.64 s | – | – |