RONSE (BE)
Known mine explosion2 May 1994
- Magnitude
- –
- Depth
- 22.8km ± 4.9
- Belgian time
- 12:29:161994-05-02
- UTC
- 10:29:161994-05-02
Main parameters
| Date and time | 1994-05-02 10:29:16 UTC 1994-05-02 12:29:16 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.759° N, 3.585° E Uncertainty ± 9.9 km |
| Depth of hypocenter | 22.8 ± 4.9 km |
| Event ID | ROB 2687 |
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
- 5
- Epicentral distance
- 19.0 – 134.3km
- Mean velocity, P wave
- 6.7km/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 22.8 km. P wave: 4 measurements, root-mean-square deviation 0.08 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)5 stations | |||||
| LESLessines | 19.0 | 106 | 10:29:22.42+5.47 s | 10:29:26.39+9.44 s | 3.97 |
| RQRRonquières | 48.4 | 110 | 10:29:25.88+8.93 s | – | – |
| SNFSeneffe | 56.7 | 119 | 10:29:26.98+10.03 s | 10:29:34.46+17.51 s | 7.48 |
| AULAulne | 68.7 | 129 | 10:29:28.87+11.92 s | 10:29:38.01+21.06 s | 9.14 |
| HUMHumain | 134.3 | 117 | 10:29:40.81+23.86 s | – | – |