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Lavori presentati

Nei congressi nazionali e internazionali

Anni 2006 - 2007

  1. Masci F., P. Palangio, M. Di Persio, Antonio Meloni
    The INGV tectonomagnetic network in Central Italy: actual state and future developments
    MGMEESV 2006, 27 - 29 Settembre 2006, Catania, Italia. ABSTRACT
    We are reporting the actual state and the future developments of the INGV tectonomagnetic network. The network is part of the INGV L'Aquila Geomagnetic Observatory and it is located in Central Italy in an area extending approximately between latitude 41.6°N and 42.8°N, and between longitude 13.0°E and 14.3°E. At the present time, total geomagnetic field intensity data are collected in four stations using proton precession magnetometers. During 2006 the network will be supplied with two other stations developed inside the MEM Project (Interreg IIIA Adriatic Cross Border Programme) with the aim to thicken the network and to extend the research area. The two stations will be operating from the beginning of 2007. In the future, the actual instrumentation of each station will be upgraded with a 3-axial magnetometer and the signals sampling rate will be increased up to 1Hz. Here we also report the last years preliminary data analysis. During 2004-2005 no relation with the local recorded earthquakes by the INGV Italian Seismic National Network has been found. On the other hand, during this period no significant seismic activity is registered in Central Italy. The maximum earthquakes magnitude registered during this period is about M=3, so no significant variations in the local geomagnetic field is expected. Anyway we are showing some deceptive structures that can mislead and some events, recorded in one station of the network, with no reasonable explanation at this moment. In the future it is needed more investigation to explain the cause of this kind of events.
  2. Palangio P., M. Di Persio, F. Masci, Antonio Meloni
    Electromagnetic monitoring of the Earth Interior
    MGMEESV 2006, 27 - 29 Settembre 2006, Catania, Italia. ABSTRACT
    We are reporting some methodologies used to separate the electromagnetic fields of internal origin from the electromagnetic background soup which permeates each part of the Earth-Ionosphere cavity in the 0.001 Hz - 100 kHz band of frequencies. In the frame of the MEM Project (Interreg IIIA Adriatic Cross Border Programme) and the NOWCAST Project we have been developing the technology and the research methods to discriminate and to characterize the electromagnetic sources located in the Earth interior that somehow are related with the seismic and volcanic activity. The focus of these projects is to optimize the elaborations of the observed data from ground-based networks and to improve of the research methodologies mainly in the field of the electromagnetic phenomena inside the Earth.
  3. Palangio P., L. Santarelli, F. Masci, M. Di Persio, M. Pietrolungo, C. Rossi
    Electromagnetic Fields Measurements in ULF-ELF-VLF (0.001Hz-100KHz) Bands
    IWEMSEV 2006, 20 - 22 Novembre 2006, Agra, India. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in L’Aquila since 2004 with the purpose of monitoring the environmental electromagnetic signals in ULF-ELF-VLF (0.001 Hz-100 KHz) bands. Data from interferometric array will allow to realize environmental electromagnetic tomography in order to do a graphical representation of electromagnetic fields in the domain of time, frequency and space. This technique is a good investigation tool to obtain three-dimensional maps of electromagnetic background noise, on regional scale. Tomographic maps are useful to show the spatial distribution of electromagnetic sources and to characterize signals with a set of parameters such as energy, polarization, spectral content. The interferometric array will be constituted by three stations. Data from each station will be elaborated to investigate different sectors as the structure of ground electric conducibility, the electromagnetic phenomena connected with seismic activity, the separation of electromagnetic fields of internal origin to the Earth and the electromagnetic phenomena originated in the magnetosphere, in the ionosphere and in the Earth-Ionosphere cavity. In this work we present the results obtained in the first station of the interferometric array. The station was installed in the INGV Geomagnetic Observatory of L’Aquila (42° 23’ N, 13° 19’E, 682m a.s.l.) since the middle of 2005.
  4. Masci F., P. Palangio, A. Meloni
    The INGV Tectonomagnetic Network
    IWEMSEV 2006, 20 - 22 Novembre 2006, Agra, India. ABSTRACT
    It is well established that earthquakes and volcanic eruption, in some case, can produce significant variation on the local geomagnetic field. The Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV) tectonomagnetic network was installed in Central Italy since 1989 to investigate possible seismomagnetic effects related to tectonic activity. This network is part of the INGV L’Aquila Geomagnetic Observatory (42° 23’ N, 13° 19’E, 682m a.s.l.), and is located in an area extending between latitude 41.6°N and 42.8° N and between longitude 13.0°E and 14.3°E. At present time, total geomagnetic field intensity data are collected in four stations using proton precession magnetometers. In the immediate future the network will be supplied with two other stations developed inside the MEM Project (Interreg IIIA Adriatic Cross Border Programme). The leader partner of this project is the Abruzzo Region. Here we report the network dataset analysis. Some deceptive structures that can mislead are also shown. In the first step, the data of each station are differentiated respect to the data of the other stations in order to detect local field anomalies removing the contributions from the other sources, external and internal to the Earth. The results of the data analysis are also correlated with the seismic activity recorded in Central Italy by the Italian Seismic National Network. A new approach in data analysis is attempted applying an autoregressive model to the differentiated data. Preliminary tests show a second order autoregressive model as the best fit.
  5. Masci F., P. Palangio, M. Di Persio, A. Meloni
    The INGV tectonomagnetic network in Central Italy
    2nd Alexander von Humboldt Conference, 5 - 9 Marzo 2007, Lima, Peru. ABSTRACT
    Some electromagnetic phenomena on the Earth surface and in the atmosphere can be associated with tectonic and volcanic activity in the Earth crust. Volcanic eruptions and earthquakes can produce variations in the local geomagnetic field. The value of this variation is about few nT; some studies report a variation about 1-5 nT relating to earthquakes and a variation up to 10 nT relating to volcanic activity. The Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV) tectonomagnetic network was installed in central Italy since the middle of 1989 to investigate possible seismomagnetic effects related to earthquakes occurrences. The network is part of the INGV L'Aquila Geomagnetic Observatory and it is located in Central Italy in an area extending approximately between latitude 41.6°N and 42.8°N, and between longitude 13.0°E and 14.3°E. We are reporting the actual state and the future developments of the network. At the present time, total geomagnetic field intensity data are collected in four stations using proton precession magnetometers. In the future the network will be supplied with two other stations developed inside the MEM Project (Interreg IIIA Adriatic Cross Border Programme) with the aim to thicken the network and to extend the research area. The leader partner of this project is the Abruzzo Region. The two stations will be operating from meddle of 2007 and the instrumentation of the present stations will be replaced with an Overhauser magnetometer and 3-axial magnetometer. Here we also report the results of last years data analysis and the correlation with the seismic activity recorded in Central Italy by the Italian Seismic National Network.
  6. Palangio P., L. Santarelli, F. Masci, M. Di Persio, M. Pietrolungo
    Electromagnetic fields measurements in ULF-ELF-VLF (0.001Hz-100KHz) bands
    2nd Alexander von Humboldt Conference, 5 - 9 Marzo 2007, Lima, Peru. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in L’Aquila since 2004 with the purpose of monitoring the environmental electromagnetic signals in ULF-ELF-VLF (0.001 Hz-100 KHz) bands. Data from interferometric array will allow to realize environmental electromagnetic tomography in order to do a graphical representation of electromagnetic fields in the domain of time, frequency and space. This technique is a good investigation tool to obtain three-dimensional maps of electromagnetic background noise, on regional scale. Tomographic maps are useful to show the spatial distribution of electromagnetic sources and to characterize signals with a set of parameters such as energy, polarization, spectral content. The interferometric array will be constituted by three stations. Data from each station will be elaborated to investigate different sectors as the structure of ground electric conducibility, the electromagnetic phenomena connected with seismic activity, the separation of electromagnetic fields of internal origin to the Earth and the electromagnetic phenomena originated in the magnetosphere, in the ionosphere and in the Earth-Ionosphere cavity. In this work we present the results obtained in the first station of the interferometric array. The station was installed in the INGV Geomagnetic Observatory of L’Aquila (42° 23’ N, 13° 19’E, 682m a.s.l.) since the middle of 2005.
      In order to study the time changes of the underground distribution of electrical conductivity we analyse the time variations of magnetic transfer functions and the complex components of the electromagnetic tensor in three main bands: 0.001 Hz – 1000 Hz, 1000 Hz – 5 kHz and 5 kHz-100 kHz.
  7. Masci F., P. Palangio, M. Di Persio, A. Meloni
    Development of the INGV tectonomagnetic network inside the MEM Project
    European Geosciences Union General Assembly 2007, 15 - 20 Arile 2007, Vienna, Austria. ABSTRACT
    Some electromagnetic phenomena on the Earth surface and in the atmosphere can be associated with tectonic and volcanic activity in the Earth crust. Volcanic eruptions and earthquakes can produce variations in the local geomagnetic field up to 10 nT. The Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV) tectonomagnetic network was installed in central Italy since the middle of 1989 to investigate possible seismomagnetic effects related to earthquakes occurrences. The network is part of the INGV L'Aquila Geomagnetic Observatory and it is located in Central Italy in an area extending approximately between latitude 41.6°N and 42.8°N, and between longitude 13.0°E and 14.3°E. Here, we are reporting the actual state and the future developments of the network. At the present time, total geomagnetic field intensity data are collected in four stations using proton precession magnetometers. During 2007 the network will be supplied with other two stations developed inside the MEM Project (Interreg IIIA Adriatic Cross Border Programme) with the aim to thicken the network and to extend the research area. The leader partner of the MEM project is the Abruzzo Region. Each network station will be supplied with an Overhauser magnetometer and 3-axial magnetometer. Some tests, carried out to select the location of the new stations, are shown. Here we also report the 2006 dataset showing a different approach in the data analysis that takes into account the inductive effects on the total geomagnetic field intensity by means of the inter-station transfer functions.
  8. Palangio P., C. Di Lorenzo, M. Di Persio, F. Masci, L. Santarelli
    Electromagnetic anomaly associated with Earth crustal activity in the frequency band from 0.001 Hz to 5 kHz
    European Geosciences Union General Assembly 2007, 15 - 20 Aprile 2007, Vienna, Austria. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in the INGV Observatory of L’Aquila since 2004. The principal purpose of the project is the development of an observatories network to monitoring the electromagnetic signals in the band from 0.001 Hz to 100 KHz. The leader partner of the project is the Abruzzo Region; the others partners are the INGV (Italian Istituto Nazionale di Geofisica e Vulcanologia ), the Regional Environmental Agency of Molise (ARPA-Molise), the Ferrara University, the Tirana University and the Geomagnetic Institute of Grocka, Beograd. The first MEM measurement station has been installed in L’Aquila INGV Geomagnetic Observatory (42° 23’ N, 13° 19’E, 682m a.s.l.) and it has been operating from the middle of 2005. The innovative characteristic of the project can be single out in the approach chosen to study the complex problem to representing the electromagnetic fields spatial and temporal distributions in the band of interest. Both the distributions has been represented by some parameters containing the location and the characteristics of the electromagnetic background sources, natural and artificial, of noise. The employed technique is the wide band interferometry. Combining the simultaneous observations of the electromagnetic field obtained in the network stations, we are able to obtain detailed information about the investigated electromagnetic sources. Moreover, another considerable purpose of the MEM project is the electromagnetic monitoring of the geodynamic processes related to the seismic activity.
  9. Palangio P., C. Di Lorenzo, M. Di Persio, F. Masci, L. Santarelli, A. Meloni
    Electromagnetic fields monitoring in the band from 0.001 Hz to 100 kHz in the frame of MEM Project
    EGM 2007 International Workshop, 15 - 18 Aprile 2007, Capri, Italy. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in the INGV Observatory of L’Aquila since 2004. The principal purpose of this project is the development in Central Italy of an observatories network for continuous monitoring the electromagnetic signals in ULF-ELF-VLF (0.001 Hz-100 KHz) bands. The leader partner of the project is the Abruzzo Region; the others partners are the INGV (italian Istituto Nazionale di Geofisica e Vulcanologia) Observatory of L’Aquila, the Regional Environmental Agency of Molise (ARPA-Molise), the Ferrara University, the Tirana University and the Geomagnetic Institute of Grocka, Beograd. The innovative characteristic of the project can be single out in the approach chosen to study the complex problem to representing spatial and temporal distributions of the electromagnetic fields in the band of interest. Both the distributions has been represented by some parameters containing the location and the characteristics of the electromagnetic background sources of noise, both natural and artificial. The employed technique is the wide band interferometry. Combining the simultaneous observations of the electromagnetic field obtained in the different network stations, we are able to obtain detailed information about the investigated electromagnetic sources in the Earth-ionosphere cavity.
  10. Masci F. , P. Palangio, C. Di Lorenzo, M. Di Persio, A. Meloni
    The INGV tectonomagnetic network: future developments in the MEM Project
    IUGG XXIV General Assembly, 2 - 13 Luglio 2007 Perugia, Italy. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in the INGV (Italian Istituto Nazionale di Geofisica e Vulcanologia) Observatory of L’Aquila since 2004. The leader partner of the project is the Abruzzo Region. One of the purposes of the MEM project is the electromagnetic monitoring of the geodynamic processes related to the seismic activity. To that end inside this project the upgrade of the INGV tectonomagnetic network was scheduled. The INGV tectonomagnetic network was installed in Central Italy since the middle of 1989 to investigate possible seismomagnetic effects related to earthquakes occurrences. The network is part of the INGV L'Aquila Geomagnetic Observatory. Here, we are reporting the actual state and the future developments of the network. At the present time, total geomagnetic field intensity data are collected in four stations using proton precession magnetometers. During 2007 the network will be updated with new other stations with the aim to thicken the network and to extend the research area. Each network station will be supplied with a new overhauser magnetometer and a 3-axes magnetometer. Some tests, carried out to select the location of the new stations, are shown. Here we also report the 2006 dataset of the network stations showing a different approach in the data analysis that takes into account the inductive effects on the total geomagnetic field intensity by means of the inter-station transfer functions.
  11. Palangio P., C. Di Lorenzo, F. Masci
    Electromagnetic fields measurements in ULF-ELF-VLF (0.001Hz-100KHz) bands
    IUGG XXIV General Assembly, 2 - 13 Luglio 2007 Perugia, Italy. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in L’Aquila since 2004 with the purpose to monitoring the environmental electromagnetic signals in ULF-ELF-VLF (0.001 Hz-100 KHz) bands. The leader partner of the project is the Abruzzo Region. Data from interferometric array will allow to realize environmental electromagnetic tomography in order to obtain a graphical representation of electromagnetic fields in the domain of time, frequency and space. This technique is a good investigation tool to obtain three-dimensional maps of electromagnetic background noise, on regional scale. Tomographic maps are useful to show the spatial distribution of electromagnetic sources and to characterize signals with a set of parameters such as energy, polarization, spectral content and so on. Data from each station will be elaborated to investigate different sectors as the structure of ground electric conductibility, the electromagnetic phenomena connected with tectonic processes, the separation of electromagnetic fields of internal origin to the Earth and the electromagnetic phenomena originated in the magnetosphere, in the ionosphere and in the Earth-Ionosphere cavity. In this work we present the results obtained in the first station of the interferometric array. Here we are reporting some results obtained in the first station of the interferometric array. The station was installed near the INGV Geomagnetic Observatory of L’Aquila (42° 23’ N, 13° 19’E, 682m a.s.l.) since the middle of 2005.
  12. Palangio P., C. Di Lorenzo, F. Masci
    Electromagnetic monitoring of regional geodynamical processes in the frame of MEM Project
    IUGG XXIV General Assembly, 2 - 13 Luglio 2007 Perugia, Italy. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in L’Aquila 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 L’Aquila near the INGV Geomagnetic Observatory (42° 23’ N, 13° 19’E, 682m a.s.l.) and it is working from the middle of 2005. Here we report the preliminary results obtained in the L’Aquila MEM station concerning the non inductive field analysis by means of the Earth impulse response functions.
  13. Palangio P., C. Di Lorenzo, F. Masci
    The spatial distribution of the electromagnetic fields surrounding L'Aquila (Italy) due to a new electrified public transport
    IUGG XXIV General Assembly, 2 - 13 Luglio 2007 Perugia, Italy. ABSTRACT
    The MEM Project (Interreg IIIA Adriatic Cross Border Programme) has been activated in the INGV (Italian Istituto Nazionale di Geofisica e Vulcanologia) Observatory of L’Aquila since 2004. The leader partner of the project is the Abruzzo Region. The others Italian partners are the INGV Observatory of L’Aquila, the Regional Environmental Agency of Molise and the University of Ferrara, while the European partners are the University of Tirana and the Geomagnetic Institute of Grocka, Beograd. One of the purposes of the MEM project is the monitoring of the electromagnetic environmental noise. A new urban electrified public transportation system will be activated in L’Aquila, Italy, at the end of 2007. The electromagnetic emissions generated by the electric lines network whenever an electric transient is present on the power system as the trolley cars move is modelled by means of horizontally antenna elements approximation. The results will be expressed by the spatial distribution of the electric and magnetic field strength and the energy density in different frequency ranges.