HERCHIES (BE)
Known mine explosion19 September 2008
- Magnitude
- –
- Depth
- 0.9km ± 0.7
- Belgian time
- 12:59:392008-09-19
- UTC
- 10:59:392008-09-19
Main parameters
| Date and time | 2008-09-19 10:59:39 UTC 2008-09-19 12:59:39 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.548° N, 3.863° E Uncertainty ± 5.1 km |
| Depth of hypocenter | 0.9 ± 0.7 km |
| Event ID | ROB 3744 |
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
- 7
- Epicentral distance
- 18.6 – 103.1km
- Mean velocity, P wave
- 5.8km/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 0.9 km. P wave: 7 measurements, root-mean-square deviation 0.34 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)7 stations | |||||
| BOUBougnies | 18.6 | 162 | 10:59:42.65+3.44 s | – | – |
| SKQSteenkerque | 19.0 | 54 | 10:59:42.26+3.05 s | – | – |
| RQRRonquières | 26.4 | 76 | 10:59:42.96+3.75 s | – | – |
| SNFSeneffe | 30.1 | 98 | 10:59:44.67+5.46 s | – | – |
| DOUDourbes | 72.5 | 134 | 10:59:51.41+12.20 s | – | – |
| GESGesves | 88.8 | 101 | 10:59:54.58+15.37 s | – | – |
| CLAClavier | 103.1 | 97 | 10:59:57.00+17.79 s | – | – |
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