TECNET (or also EU TecNet) performs long-term subsurface monitoring of movements on faults and collects unique data on the stability of rock massifs. Overall, TECNET is a unique worldwide network for 3-D monitoring of displacement on faults. The original device enabling 3-D monitoring, developed and patented by the USMH CAS, is currently used for monitoring many significant seismic faults in the world (eg San Andreas in California in cooperation with the State University of San Diego, faults bordering significant slope deformations in the Canary Islands in cooperation with the Instituto Geográfico Nacional etc.).
In Europe, TECNET currently operates more than 150 devices located at major faults in Czechia, Slovakia, Poland, Germany, Belgium, Switzerland, Austria, Slovenia, Italy, Greece, Bulgaria, Spain, Norway and Ethiopia. Significant results include the identification of periods of increased tectonic activity affecting large areas across different geological units at the same time. At present, it has been shown on examples from the Bohemian Massif, the Western Carpathians and the Eastern Alps that changes in stress can cause the reactivation of deep-seated slope deformations. This network of gauges is supplemented by other methods of monitoring geodynamic phenomena such as deformometric and inclinometer measurements, level meter observations, measurements of 222Rn and CO2 in underground spaces, etc.