SOIGNIES (BE)

Known mine explosion29 September 2008

Magnitude
–
Depth
1.4km ± 9.9
Belgian time
12:51:342008-09-29
UTC
10:51:342008-09-29

Main parameters

Date and time2008-09-29 10:51:34 UTC
2008-09-29 12:51:34 Belgian time
Magnitude–
Epicentral coordinates50.599° N, 4.088° E
Uncertainty ± 5.0 km
Depth of hypocenter1.4 ± 9.9 km
Event IDROB 3779

Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-04-27 16:33:58 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
5
Epicentral distance
5.6 – 94.9km
Mean velocity, P wave
5.9km/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 1.4 km. P wave: 5 measurements, root-mean-square deviation 0.32 s.

Table of measurements

Station measurements

P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.

km°UTCUTCs
Belgian seismic network (Royal Observatory of Belgium)5 stations
SKQSteenkerque5.635410:51:35.41+0.64 s––
RQRRonquières9.78510:51:36.99+2.22 s––
SNFSeneffe17.012510:51:37.78+3.01 s––
BOUBougnies25.520410:51:39.56+4.79 s––
RCHRochefort94.912110:51:50.90+16.13 s––
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