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The wideband [0.001 Hz–100 kHz] interferometry project in Central Italy
Author(s)
Language
English
Obiettivo Specifico
2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
4 / 57 (2009)
Publisher
EAGE
Pages (printed)
729 - 737
Issued date
July 2009
Abstract
We are reporting some results and future planning of the Magnetic and Electric fields
Monitoring Project. The principal purpose of the project is to create a network of
observatories for monitoring the electromagnetic signals in the 0.001 Hz–100 kHz frequency bands in Central Italy. These bands include both natural and artificial
signals. The technological objectives of the project are the development of new instrumentation and the know-how transfer to the industry. These instruments were
tested in the Geomagnetic Observatory of L’Aquila, the first station of the network.
Here we show some examples of the developed electric and magnetic sensors. These
instruments are designed for the automatic long-term recording of the electromagnetic
fields in a wide band of frequency. The preliminary results of the first operating
station of the network are shown taking into account, in the signal elaboration, the
single station approach. Here we are reporting some examples concerning the calculation of the ground electric resistivity profile, the evaluation of the magnetic induction vectors and the study of the magnetic sources by the eigenvectors calculation. When all the stations of the network will be in operation, the use of an innovative technique, the wideband interferometry will be proposed. Combining the simultaneous observations of the electromagnetic field measured in each station, we will be able to obtain detailed information about the investigated electromagnetic sources.
Monitoring Project. The principal purpose of the project is to create a network of
observatories for monitoring the electromagnetic signals in the 0.001 Hz–100 kHz frequency bands in Central Italy. These bands include both natural and artificial
signals. The technological objectives of the project are the development of new instrumentation and the know-how transfer to the industry. These instruments were
tested in the Geomagnetic Observatory of L’Aquila, the first station of the network.
Here we show some examples of the developed electric and magnetic sensors. These
instruments are designed for the automatic long-term recording of the electromagnetic
fields in a wide band of frequency. The preliminary results of the first operating
station of the network are shown taking into account, in the signal elaboration, the
single station approach. Here we are reporting some examples concerning the calculation of the ground electric resistivity profile, the evaluation of the magnetic induction vectors and the study of the magnetic sources by the eigenvectors calculation. When all the stations of the network will be in operation, the use of an innovative technique, the wideband interferometry will be proposed. Combining the simultaneous observations of the electromagnetic field measured in each station, we will be able to obtain detailed information about the investigated electromagnetic sources.
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Research Letters 17, 1593–1596.
Masci F., Palangio P. and Meloni A. 2006. The INGV tectonomagnetic
network: 2004–2005 preliminary dataset analysis. Natural
Hazards and Earth System Sciences 6, 773–777.
Masci F., Palangio P., Di Persio M. and Di Lorenzo C. 2007. The
development of the INGV tectonomagnetic network in the frame
of the MEM Project. Natural Hazards and Earth System Sciences
7, 473–478.
Nickolaenko A.P. and Hayakawa M. 2002. Resonances in the Earth-
Ionosphere Cavity. Kluwer Academic Publishers, Dordrecht. ISBN
140200754X.
Ohta K., Watanabe N. and Hayakawa M. 2005. The observation
of ULF emissions at Nakatsugawa in possible association with the
2004 Mid-Niigata Prefecture earthquake. Earth Planets and Space
57, 1003–1008.
Palangio P. 1993. Radioricezione ELF-VLF. Annali di Geopisica 36,
99–114.
Palangio P., Di Lorenzo C., Masci F. and Di Persio M. 2007. The study
of the electromagnetic anomalies linked with the Earth’s crustal activity
in the frequency band [0.001Hz–100kHz]. Natural Hazards
and Earth System Sciences 7, 507–511.
Palangio P., Di Lorenzo C., Di Persio M., Masci F., Mihajlovic S.,
Santarelli L.et al. 2008. Electromagnetic monitoring of the Earth’s
interior in the frame of MEM project. Annals of Geophysics 51 (in
press).
Serita A., Hattori K.,Yoshino C., Hayakawa M. and Isezaki N. 2005.
Principal component analysis and singular spectrum analysis of
ULF geomagnetic data associated with earthquakes. Natural Hazards
and Earth System Sciences 5, 685–689.
Teisseyre R. and Ernst T. 2002. Electromagnetic radiation related
to dislocation dynamics in a seismic preparation zone. Annals of
Geophysics 45, 393–399.
electromagnetic wave polarization. Physics Review E 61,
2024–2028.
Chen K.J., Chiu B. and Lin C.H. 2006. A search for correlation
between time change in transfer functions and seismic energy
release in northern Taiwan. Earth and Planets Space 58, 981–
991.
Constable S.C., Parker R.L. and Constable C.G. 1987. Occam’s inversion;
A practical algorithm for the inversion of electromagnetic
data. Geophysics 52, 289–300.
Egbert G.D. and Booker J.R. 1986. Robust estimation of geomagnetic
transfer functions. Geophysical Journal of the Royal Astronomical
Society 87, 173–194.
Fraser-Smith A.C., Bernardi A., McGill P.R., Ladd M.E., Helliwell
R.A. and Villard O.G. Jr. 1990. Low frequency magnetic field measurements
near the epicenter of theMs 7.1 Loma Prieta earthquake.
Geophysical Research Letters 17, 1465–1468.
Harada M., Hattori K. and Isezaki N. 2004. Transfer function analysis
approach for anomalous ULF geomagnetic field change detection.
Physics and Chemistry of the Earth 29, 409–417.
Hattori K., Takahashi I., Yoshino C., Isezaki N., Iwasaki H., Harada
M.et al. 2004. ULF geomagnetic field measurements in Japan and
some recent results associated with Iwateken Nairiku Hokubu
Earthquake in 1998. Physics and Chemistry of the Earth 29, 481–
494.
Hayakawa M., Hattori K. and Ohta K. 2007. Monitoring of
ULF (ultra-low-frequency) geomagnetic variations associated with
earthquakes. Sensors 7, 1108–1122.
Hayakawa M., Ohta K. and Baba K. 1994. Wave characteristics of
tweek atmospherics deduced from the direction finding measurement
and theoretical interpretations. Journal of Geophysical Research
99, 10733–10743.
Ismaguilov V.S., Kopytenko Y., Hattori K. and Hayakawa M. 2003.
Variations of phase velocity and gradient values of ULF geomagnetic
disturbances connected with the Izu strong earthquakes. Natural
Hazards and Earth System Sciences 3, 211–215.
Lanzerotti L.J., Maclennan C.G. and Fraser-Smith A.C. 1990. Background
magnetic spectra: ∼10E-5 to ∼10E+5 Hz. Geophysical
Research Letters 17, 1593–1596.
Masci F., Palangio P. and Meloni A. 2006. The INGV tectonomagnetic
network: 2004–2005 preliminary dataset analysis. Natural
Hazards and Earth System Sciences 6, 773–777.
Masci F., Palangio P., Di Persio M. and Di Lorenzo C. 2007. The
development of the INGV tectonomagnetic network in the frame
of the MEM Project. Natural Hazards and Earth System Sciences
7, 473–478.
Nickolaenko A.P. and Hayakawa M. 2002. Resonances in the Earth-
Ionosphere Cavity. Kluwer Academic Publishers, Dordrecht. ISBN
140200754X.
Ohta K., Watanabe N. and Hayakawa M. 2005. The observation
of ULF emissions at Nakatsugawa in possible association with the
2004 Mid-Niigata Prefecture earthquake. Earth Planets and Space
57, 1003–1008.
Palangio P. 1993. Radioricezione ELF-VLF. Annali di Geopisica 36,
99–114.
Palangio P., Di Lorenzo C., Masci F. and Di Persio M. 2007. The study
of the electromagnetic anomalies linked with the Earth’s crustal activity
in the frequency band [0.001Hz–100kHz]. Natural Hazards
and Earth System Sciences 7, 507–511.
Palangio P., Di Lorenzo C., Di Persio M., Masci F., Mihajlovic S.,
Santarelli L.et al. 2008. Electromagnetic monitoring of the Earth’s
interior in the frame of MEM project. Annals of Geophysics 51 (in
press).
Serita A., Hattori K.,Yoshino C., Hayakawa M. and Isezaki N. 2005.
Principal component analysis and singular spectrum analysis of
ULF geomagnetic data associated with earthquakes. Natural Hazards
and Earth System Sciences 5, 685–689.
Teisseyre R. and Ernst T. 2002. Electromagnetic radiation related
to dislocation dynamics in a seismic preparation zone. Annals of
Geophysics 45, 393–399.
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