HEYD (BE)
Quarry blast7 January 2020
- Magnitude
- 1.0ML
- Depth
- 9.3km ± 7.4
- Belgian time
- 15:43:042020-01-07
- UTC
- 14:43:042020-01-07
Main parameters
| Date and time | 2020-01-07 14:43:04 UTC 2020-01-07 15:43:04 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.346° N, 5.574° E Uncertainty ± 1.2 km |
| Depth of hypocenter | 9.3 ± 7.4 km |
| Event ID | ROB 9080 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-08 08:11:39 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
- 12
- Epicentral distance
- 21.0 – 75.3km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.2km/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 9.3 km. P wave: 10 measurements, root-mean-square deviation 0.28 s. S wave: 10 measurements, root-mean-square deviation 0.35 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)12 stations | ||||||
| CLAClavier | 21.0 | 293 | 14:43:07.72+2.89 s | – | – | – |
| STISart Tilman | 26.3 | 358 | 14:43:09.01+4.18 s | – | – | – |
| HOUHouvegnez | 30.7 | 88 | 14:43:09.77+4.94 s | 14:43:14.45+9.62 s | 4.68 | – |
| LCHLa Chartreuse | 32.6 | 3 | – | 14:43:15.48+10.65 s | – | – |
| RCHRochefort | 32.7 | 229 | 14:43:10.18+5.35 s | 14:43:14.43+9.60 s | 4.25 | – |
| GESGesves | 34.9 | 277 | 14:43:10.64+5.81 s | 14:43:15.39+10.56 s | 4.75 | – |
| MEMHMembach | 42.5 | 46 | 14:43:11.59+6.76 s | 14:43:17.87+13.04 s | 6.28 | – |
| KLBKalborn | 47.0 | 125 | 14:43:13.17+8.34 s | 14:43:18.82+13.99 s | 5.65 | – |
| TNLTernell | 47.6 | 56 | 14:43:12.83+8.00 s | 14:43:19.21+14.38 s | 6.38 | – |
| MRDMaredsous | 57.6 | 265 | 14:43:14.75+9.92 s | 14:43:22.77+17.94 s | 8.02 | – |
| VIAVianden | 64.1 | 135 | – | 14:43:24.25+19.42 s | – | – |
| DOUDourbes | 75.3 | 249 | 14:43:17.40+12.57 s | 14:43:27.26+22.43 s | 9.86 | 4.1 |
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