HEYD (BE)
Quarry blast25 April 2017
- Magnitude
- 1.3ML
- Depth
- 10.0km ± 8.6
- Belgian time
- 14:13:032017-04-25
- UTC
- 12:13:032017-04-25
Main parameters
| Date and time | 2017-04-25 12:13:03 UTC 2017-04-25 14:13:03 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.333° N, 5.552° E Uncertainty ± 2.0 km |
| Depth of hypocenter | 10.0 ± 8.6 km |
| Event ID | ROB 5679 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-04-25 14:56:25 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
- 7
- Epicentral distance
- 20.2 – 47.5km
- Mean velocity, P wave
- 5.4km/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 10.0 km. P wave: 7 measurements, root-mean-square deviation 0.26 s. S wave: 4 measurements, root-mean-square deviation 0.43 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)7 stations | ||||||
| CLAClavier | 20.2 | 298 | 12:13:07.20+3.26 s | 12:13:10.16+6.22 s | 2.96 | 28.7 |
| HOUHouvegnez | 32.3 | 86 | 12:13:09.60+5.66 s | – | – | – |
| GESGesves | 33.6 | 280 | 12:13:09.98+6.04 s | 12:13:14.68+10.74 s | 4.70 | – |
| LCHLa Chartreuse | 34.2 | 6 | 12:13:09.44+5.50 s | 12:13:15.06+11.12 s | 5.62 | – |
| MRGMont Rigi | 42.1 | 62 | 12:13:11.09+7.15 s | – | – | – |
| MEMHMembach | 44.7 | 46 | 12:13:11.50+7.56 s | – | – | – |
| KLBKalborn | 47.5 | 123 | 12:13:12.57+8.63 s | 12:13:18.08+14.14 s | 5.51 | – |
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