FORET (BE)
Quarry blast30 August 2017
- Magnitude
- 1.5ML
- Depth
- 10.0km ± 5.9
- Belgian time
- 13:26:302017-08-30
- UTC
- 11:26:302017-08-30
Main parameters
| Date and time | 2017-08-30 11:26:30 UTC 2017-08-30 13:26:30 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.585° N, 5.709° E Uncertainty ± 2.2 km |
| Depth of hypocenter | 10.0 ± 5.9 km |
| Event ID | ROB 5870 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-09-01 08:31:22 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
- 10.3 – 61.0km
- Mean velocity, P wave
- 6.1km/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 10.0 km. P wave: 8 measurements, root-mean-square deviation 0.33 s. S wave: 6 measurements, root-mean-square deviation 0.62 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)8 stations | ||||||
| STISart Tilman | 10.3 | 269 | 11:26:32.41+1.64 s | – | – | – |
| MEMHMembach | 21.5 | 83 | 11:26:34.55+3.78 s | 11:26:39.08+8.31 s | 4.53 | – |
| MRGMont Rigi | 27.2 | 107 | 11:26:35.46+4.69 s | 11:26:39.45+8.68 s | 3.99 | – |
| TNLTernell | 29.8 | 90 | 11:26:35.92+5.15 s | – | – | – |
| HOUHouvegnez | 33.2 | 141 | 11:26:36.36+5.59 s | 11:26:40.87+10.10 s | 4.51 | 33.9 |
| CLAClavier | 34.3 | 238 | 11:26:36.75+5.98 s | 11:26:41.62+10.85 s | 4.87 | 19.5 |
| GESGesves | 49.4 | 244 | 11:26:39.13+8.36 s | 11:26:45.97+15.20 s | 6.84 | – |
| KLBKalborn | 61.0 | 152 | 11:26:41.45+10.68 s | 11:26:48.32+17.55 s | 6.87 | – |
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