IASPEI - Picture Gallery
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IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy (S) - IASPEI - International Association of Seismology and Physics of the Earth's Interior JSS009 Poster presentation 2058 Electromagnetic monitoring of regional geodynamical processes in the frame of MEM Project Dr. Paolo Palangio Osservatorio Geofisico di L'Aquila Istituto Nazionale di Geofisica e Vulcanologia Cinzia Di Lorenzo The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in LAquila since 2004. The leader partner of the project is the Abruzzo Region. The main scientific objective of the project is the characterization of the electromagnetic background noise in the frequency band from 0.001 Hz to 100 kHz in Earth-Ionosphere cavity. Further scientific objectives of the MEM Project are the model realization of the electric and magnetic fields generated in a 3-dimensional earth by induction sources in the lithosphere and the study of electromagnetic signals produced in the Earth interior. The study of electric and magnetic phenomena linked to tectonic processes allow us to locate the electromagnetic sources by means of interferometric methods. The first station of the MEM interferometric array has been installed in LAquila near the INGV Geomagnetic Observatory (42 23 N, 13 19E, 682m a.s.l.) and it is working from the middle of 2005. Here we report the preliminary results obtained in the LAquila MEM station concerning the non inductive field analysis by means of the Earth impulse response functions. Keywords: tectonomagnetism
IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy (S) - IASPEI - International Association of Seismology and Physics of the Earth's Interior JSS009 Poster presentation 2059 Effect of Noise from DC-Driven Trains to Geoelectrical Potential Difference and its Reduction at Hakuba Area, Japan Dr. Katsumi Hattori Department of Earth Sciences, Faculty of Science Chiba University IASPEI Hisashi Ishikawa, Ichiro Takahashi, Yoichi Noda, Toshiyasu Nagao, Nobuhiro Isezaki The variations of geoelectrical potential differences in Hakuba area, Nagano Prefecture, Japan have been investigated. The noises originated from the DC-driven trains were found to contaminate into the natural geoelectrical potential data. The most intense influence of trains occurred when the train was running nearby measuring dipoles. The gradient of the potential was deflected towards the railways and/or the position of the train, exhibiting a certain correlation between the power supply data at substation data and the geoelectrical potential data at measuring site. Extracting the high correlation part (r > 0.7), idealized train noise can be computed by the least square method. The reduction of train noise by more than 60 % was achieved by subtracting the idealized noise from observed data. Keywords: geoelectrical potential diff, noise reduction, dc driven train
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IUGG XXIV General Assembly July 2-13, 2007 Perugia, Italy<br />
(S) - <strong>IASPEI</strong> - International Association of Seismology and Physics of the Earth's<br />
Interior<br />
JSS009 Poster presentation 2058<br />
Electromagnetic monitoring of regional geodynamical processes in the<br />
frame of MEM Project<br />
Dr. Paolo Palangio<br />
Osservatorio Geofisico di L'Aquila Istituto Nazionale di Geofisica e Vulcanologia<br />
Cinzia Di Lorenzo<br />
The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in LAquila since<br />
2004. The leader partner of the project is the Abruzzo Region. The main scientific objective of the<br />
project is the characterization of the electromagnetic background noise in the frequency band from<br />
0.001 Hz to 100 kHz in Earth-Ionosphere cavity. Further scientific objectives of the MEM Project are the<br />
model realization of the electric and magnetic fields generated in a 3-dimensional earth by induction<br />
sources in the lithosphere and the study of electromagnetic signals produced in the Earth interior. The<br />
study of electric and magnetic phenomena linked to tectonic processes allow us to locate the<br />
electromagnetic sources by means of interferometric methods. The first station of the MEM<br />
interferometric array has been installed in LAquila near the INGV Geomagnetic Observatory (42 23 N,<br />
13 19E, 682m a.s.l.) and it is working from the middle of 2005. Here we report the preliminary results<br />
obtained in the LAquila MEM station concerning the non inductive field analysis by means of the Earth<br />
impulse response functions.<br />
Keywords: tectonomagnetism