70000 people for 6 months as well as the temporary relocation of the Observatory. Today the seismic monitoring network consists of 22 stations including 2 stations operated in conjunction with regional institutions. The volcano monitoring network consists in 2000 of 10 short period stations with three 3-component stations of which two are digital high dynamic Lennartz instruments. The regional network now consists of 11 short period stations with two 3-component stations of which one is a digital high dynamic Lennartz instrument.
All seismic data are radio-telemetered to the observatory.
The PC-based recording system is triggered when seismic events are detected by at least 3 stations. Data is stored and processed locally as well as sent to Paris via the internet for refined processing and archiving.