All stations are equipped with an in-well seismometer, located at a depth of 75 m, and a surface accelerometer. The stations normally consist of the following elements:
• a wire mesh fence and access gate;
• a well, equipped with a surface access shaft, which houses the sensors;
• a cabinet containing electrical and electronic equipment;
• a photovoltaic panel for power supply.
OEach station has a remote data transmission device and GPS antenna for precise time synchronisation. Power is supplied by a suitably sized stand-alone photovoltaic system. The cabinet houses the various equipment (seismological data acquisition, modem/router, power supply, battery, switches, etc.) and the remote transmission and positioning antennas.
According to international seismological standards, station sites are named with a 4-character code of the type OL##, where ## represents a two-digit number from 01 to 09. The network has been registered with code OL within the worldwide body that manages the information of digital seismic networks, theFederation of Digital Broad-Band Seismograph Networks (FDSN) which is part of the worldwide consortium Incorporated Research Institutions for Seismology (IRIS), with which OGS is associated.
In the following, for each station (OL01-OL09), summary sheets containing information about the sites and the instrumentation installed are given.
- OL01 - Cornegliano Laudense, Cluster A
- OL02 - Massalengo
- OL03 - Pieve Fissiraga, Loc. Castagna
- OL04 - Lodivecchio, Loc. Comasina
- OL05 - Lodi, Loc. Cavrigo
- OL06 - Lodi, Loc. Bracca
- OL07 - Gugnano
- OL08 - Dovera
- OL09 - Miradolo