WARCHIN (BE)
Quarry blast3 November 2016
- Magnitude
- 2.0ML
- Depth
- 7.8km ± 2.3
- Belgian time
- 13:01:252016-11-03
- UTC
- 12:01:252016-11-03
Main parameters
| Date and time | 2016-11-03 12:01:25 UTC 2016-11-03 13:01:25 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.617° N, 3.417° E Uncertainty ± 2.1 km |
| Depth of hypocenter | 7.8 ± 2.3 km |
| Event ID | ROB 5571 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-11-03 14:08:44 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
- 14
- Epicentral distance
- 31.9 – 200.0km
- Mean velocity, P wave
- 6.0km/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 7.8 km. P wave: 7 measurements, root-mean-square deviation 0.21 s. S wave: 4 measurements, root-mean-square deviation 0.33 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)14 stations | ||||||
| LESLessines | 31.9 | 71 | 12:01:31.68+5.91 s | 12:01:35.54+9.77 s | 3.86 | – |
| SKQSteenkerque | 47.1 | 85 | 12:01:33.83+8.06 s | 12:01:39.22+13.45 s | 5.39 | – |
| BRQBracquegnies | 53.2 | 106 | 12:01:35.00+9.23 s | – | – | – |
| RQRRonquières | 57.2 | 91 | 12:01:35.25+9.48 s | – | – | – |
| SNFSeneffe | 62.6 | 101 | 12:01:36.21+10.44 s | – | – | – |
| DOUDourbes | 102.0 | 124 | 12:01:42.60+16.83 s | 12:01:55.97+30.20 s | 13.37 | 24.4 |
| MRDMaredsous | 102.2 | 110 | 12:01:43.02+17.25 s | 12:01:55.59+29.82 s | 12.57 | – |
| GESGesves | 121.3 | 102 | 12:01:47.94+22.17 s | 12:02:01.69+35.92 s | 13.75 | – |
| DSLBDessel | 134.6 | 59 | 12:01:47.98+22.21 s | 12:02:04.38+38.61 s | 16.40 | – |
| CLAClavier | 135.5 | 99 | 12:01:48.57+22.80 s | – | – | – |
| RCHRochefort | 138.6 | 111 | 12:01:48.58+22.81 s | 12:02:04.91+39.14 s | 16.33 | – |
| MEMSMembach | 183.5 | 89 | – | 12:02:18.13+52.36 s | – | – |
| HOUHouvegnez | 186.0 | 98 | 12:01:55.39+29.62 s | – | – | – |
| KLBKalborn | 200.0 | 106 | 12:01:55.61+29.84 s | 12:02:18.60+52.83 s | 22.99 | – |