Seismometer network

The seismometer network comprises eight monitoring stations equipped with digital seismic data loggers, to which two three-dimensional sensors are connected: one seismometer and one accelerometer. The high dynamic range of the data loggers, combined with the inherent characteristics of the sensors, enables high-quality data recording, ranging from the faintest local events to major global earthquakes.

The seismometer-type sensors are either short-period, with a natural frequency of 1 or 5 seconds, or broadband, with a natural frequency of 40 seconds. For details of the accelerometer-type sensors, please refer to the relevant section. Data transmission takes place in real time, 24 hours a day, and each data logger is equipped with a GPS receiver that synchronises the internal clock with universal time (UTM), an essential requirement for carrying out subsequent seismological processing, whether automatic or manual.

The seismometer network is identified internationally by the acronym ST and the DOI:10.7914/SN/ST (Digital Object Identifier) code, registered with the FDSN (International Federation of Digital Seismograph Networks), whilst the codes for the various stations are registered with the ISC (International Seismological Centre), which manages the international register of seismic stations worldwide. The seismometer stations in Trentino are integrated with those in South Tyrol, Veneto, Friuli-Venezia Giulia, Slovenia, Austria and Switzerland, helping to ensure optimal instrumental coverage of the central-eastern Alpine arc.

Currently, the remote stations transmit a real-time data stream in digital format via WiFi radio equipment (5.4 GHz), which connects them to the nearest access point on the new provincial TETRA radio network or to the fibre-optic node. The data is then fed to the data acquisition centre at the Spini di Gardolo Multifunctional Centre, where it is decoded and stored on digital media. Via a dedicated link, the signals recorded by the stations are also shared with other national and international seismological centres.

Location and characteristics of the stations, including information on the site’s topography and geology.

>>>>>VIEW REAL-TIME STATION DATA<<<<<

File containing the locations of the stations in Google Earth format. The data for each individual station (location, geographical coordinates (WGS84 datum), orthometric height) can be viewed by clicking on the station symbol.