Tectonomagnetic and VLF electromagnetic signals in Central Italy

Abstract. We are reporting the technological and scientific objectives of the MEM project. The MEM project has been activated in the INGV Observatory of L'Aquila to create in Central Italy a network of observatories in order to monitoring the electromagnetic signals in the frequency band [0.001 Hz–100 kHz]. Some examples of the instrumentation developed in the frame of the project are reported. An innovative technique, based on the wide band interferometry is proposed to obtain detailed information concerning the several detected electromagnetic sources. Moreover, data from each station will be elaborated to investigate different sectors as the structure of ground electric conductibility, the electromagnetic phenomena connected with seismic activity, the separation of the electromagnetic fields originated in the Earth's interior and the electromagnetic phenomena originated in the magnetosphere, in the ionosphere and in the Earth-ionosphere cavity.

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SELF-VLF Electromagnetic Signals and Solar Wind Proton Density Variations that Preceded the M6.2 Central Italy Earthquake on August 24, 2016

International Journal of Modern Research in Electrical and Electronic Engineering ◽

10.20448/journal.526/2017.1.1/526.1.1.15 ◽

2017 ◽

Vol 1 (1) ◽

pp. 1-15

Author(s):

Gabriele Cataldi ◽

Daniele Cataldi ◽

Valentino Straser

Keyword(s):

Solar Wind ◽

Central Italy ◽

Proton Density ◽

Solar Wind Proton ◽

Central Italy Earthquake ◽

Electromagnetic Signals

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Artificial and natural electromagnetic signals revealed during two years in the Amare cave (Central Italy)

Annals of Geophysics ◽

10.4401/ag-4161 ◽

1994 ◽

Vol 37 (5 Sup.) ◽

Author(s):

F. Bella ◽

R. Bella ◽

P. F. Biagi ◽

M. Caputo ◽

G. Della Monica ◽

...

Keyword(s):

Solid State ◽

Electromagnetic Fields ◽

Natural Frequencies ◽

Central Italy ◽

Southern Slope ◽

Qualitative Explanation ◽

Weather Events ◽

Electromagnetic Signals ◽

Set Up ◽

Electric Signals

n 1990, some instrumentation was set up in the Amare cave (southern slope of the Gran Sasso chain, L'Aquila) in order to pick up electric signals ranging from 0.3 to 300 kHz, magnetic signals from 0.3 to 30 kHz and seismoacoustic signals by means of three geophones with natural frequencies of 0.3 kHz, 25 kHz and 150 kHz. Data are recorded every ten minutes on a solid state memory. The analysis of the data allows us to establish the existence of electromagnetic fields of distant origin connected with broadcastings and with tropical lightning activity and the discontinuous presence of local electric and magnetic signals, coupled with seismoacoustic ones, connected with weather events. A qualitative explanation of these near fields is given.

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The study of the electromagnetic anomalies linked with the Earth's crustal activity in the frequency band [0.001 Hz–100 kHz]

Natural Hazards and Earth System Science ◽

10.5194/nhess-7-507-2007 ◽

2007 ◽

Vol 7 (5) ◽

pp. 507-511 ◽

Cited By ~ 2

Author(s):

P. Palangio ◽

C. Di Lorenzo ◽

F. Masci ◽

M. Di Persio

Keyword(s):

Electric Fields ◽

Frequency Band ◽

Central Italy ◽

Tectonic Activity ◽

Normal Behaviour ◽

Know How ◽

Single Station ◽

Lower Frequency Band ◽

Electromagnetic Signals

Abstract. The technological and the scientific objectives of the MEM (Magnetic and Electric fields Monitoring) project concerning to the study of the electromagnetic signals linked with the Earth's crustal activity are reported. The MEM project has been activated in Central Italy to create a network of observatories so as to monitoring the electromagnetic signals, both natural and artificial, in the frequency band [0.001 Hz–100 kHz]. Some examples of the developed instrumentation and the know-how transfer to the industry are reported. We also report some results obtained in the first MEM station installed in the area of the INGV (Italian Istituto Nazionale di Geofisica e Vulcanologia) Observatory of L'Aquila. Using the single station magnetotelluric approach we have obtained some valuables information about the underground resistivity structure in the area of the measurement station. Concerning to the study of the magnetic signals linked with the tectonic activity we have reported an example of the long term behaviour of the magnetic induction vectors characteristics in the lower frequency band [0.001–0.5] Hz, showing their normal behaviour when no large crustal changes due to geodynamical processes are present.

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Magnetic and Electromagnetic signals related to tectonic activity: updates and new analyses on measurements in Central Italy

Natural Hazards and Earth System Science ◽

10.5194/nhess-5-925-2005 ◽

2005 ◽

Vol 5 (6) ◽

pp. 925-930

Author(s):

D. Di Mauro ◽

S. Lepidi ◽

A. Meloni ◽

P. Palangio

Keyword(s):

Seismic Activity ◽

Spatial Scales ◽

Central Italy ◽

Wide Band ◽

Tectonic Activity ◽

Electromagnetic Properties ◽

National Network ◽

Tectonic Events ◽

Electromagnetic Signals

Abstract. Tectonomagnetic field observations from absolute magnetic field levels have been collected in Central Italy since 1989 by means of a network of four absolute magnetometer stations, including the geomagnetic observatory of L'Aquila (42°23 N, 13°19 E) used as reference for differentiation; also electromagnetic variations from VLF signals have been recorded in the last years by means of VLF search coil wide-band antennas. Many reports proved the occurrence of electromagnetic effects clearly related to tectonic events (seismic and volcanic activity) in active areas of our planet. In this paper we show the variation of some electromagnetic parameters which could be related to local and regional seismic activity for the most recent years 2002 and 2003. We also report the seismic activity recorded in this area by the Italian seismic national network. Some tentative analysis (in the wavelets and statistical approach) on the historical and recent dataset allow a better characterization of electromagnetic properties of the study area, at different temporal and spatial scales.

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