RESUMO
The ISTIMES project, funded by the European Commission in the frame of a joint Call "ICT and Security" of the Seventh Framework Programme, is presented and preliminary research results are discussed. The main objective of the ISTIMES project is to design, assess and promote an Information and Communication Technologies (ICT)-based system, exploiting distributed and local sensors, for non-destructive electromagnetic monitoring of critical transport infrastructures. The integration of electromagnetic technologies with new ICT information and telecommunications systems enables remotely controlled monitoring and surveillance and real time data imaging of the critical transport infrastructures. The project exploits different non-invasive imaging technologies based on electromagnetic sensing (optic fiber sensors, Synthetic Aperture Radar satellite platform based, hyperspectral spectroscopy, Infrared thermography, Ground Penetrating Radar-, low-frequency geophysical techniques, Ground based systems for displacement monitoring). In this paper, we show the preliminary results arising from the GPR and infrared thermographic measurements carried out on the Musmeci bridge in Potenza, located in a highly seismic area of the Apennine chain (Southern Italy) and representing one of the test beds of the project.
Assuntos
Fenômenos Eletromagnéticos , Monitoramento Ambiental/instrumentação , Radar/instrumentação , Tecnologia de Sensoriamento Remoto/instrumentação , Meios de Transporte , Arquitetura , Eletrodos/estatística & dados numéricos , Monitoramento Ambiental/métodos , Sistemas de Informação Geográfica , Humanos , Itália , Modelos Biológicos , Fibras Ópticas/estatística & dados numéricos , Radar/estatística & dados numéricos , Tecnologia de Sensoriamento Remoto/métodos , Tecnologia de Sensoriamento Remoto/estatística & dados numéricos , Análise Espectral , Integração de Sistemas , Meios de Transporte/instrumentação , Meios de Transporte/métodos , Meios de Transporte/normas , Tecnologia sem Fio/instrumentaçãoRESUMO
The ventilation mechanism of Rn gas in underground environments is considered. Ventilation plays an important role in influencing the variability (harmonics) of Rn gas in the porous space below the earth's surface. We propose a new physical-environmental model of relating Rn gas concentrations to air temperature variations at the earth's surface. Applicability of this model was tested after searching for Rn gas indicators of geodynamic processes in two underground tunnels in central and southern Israel. The theoretical estimation of Rn gas concentrations shows a good agreement with the observed values. We demonstrate the possibility of Rn gas anomalies being caused by atmospheric temperature variations and the necessity to take these effects into account when investigating geodynamic processes.
