PECQ (BE)
Known mine explosion2 June 2007
- Magnitude
- 1.5ML
- Depth
- 8.2km ± 5.2
- Belgian time
- 12:41:042007-06-02
- UTC
- 10:41:042007-06-02
Main parameters
| Date and time | 2007-06-02 10:41:04 UTC 2007-06-02 12:41:04 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.665° N, 3.381° E Uncertainty ± 3.7 km |
| Depth of hypocenter | 8.2 ± 5.2 km |
| Event ID | ROB 2601 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2009-05-30 18:17:43 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
- 9
- Epicentral distance
- 49.5 – 204.0km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.5km/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 8.2 km. P wave: 4 measurements, root-mean-square deviation 0.24 s. S wave: 4 measurements, root-mean-square deviation 0.38 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)7 stations | ||||||
| SKQSteenkerque | 49.5 | 92 | 10:41:12.52+8.32 s | 10:41:18.53+14.33 s | 6.01 | – |
| BOUBougnies | 50.4 | 127 | 10:41:12.55+8.35 s | 10:41:19.34+15.14 s | 6.79 | 14.0 |
| DOUDourbes | 107.2 | 126 | 10:41:22.16+17.96 s | 10:41:35.15+30.95 s | 12.99 | 10.7 |
| GESGesves | 124.9 | 104 | 10:41:24.82+20.62 s | 10:41:41.56+37.36 s | 16.74 | – |
| CLAClavier | 138.9 | 101 | 10:41:27.30+23.10 s | 10:41:44.86+40.66 s | 17.56 | – |
| ROBRobertville | 194.7 | 96 | 10:41:35.95+31.75 s | – | – | – |
| KLBKalborn | 204.0 | 107 | 10:41:36.86+32.66 s | – | – | – |
| Network LDG2 stations | ||||||
| BAIFBaives | 89.5 | 139 | 10:41:19.67+15.47 s | 10:41:29.37+25.17 s | 9.70 | – |
| GIVFGivet | 120.2 | 121 | 10:41:25.14+20.94 s | 10:41:38.15+33.95 s | 13.01 | – |