A5023813820- Earthquake Detection and Analysis
- Seismic Waves and Analysis
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Ionosphere and magnetosphere dynamics
- Geophysics and Sensor Technology
- GNSS positioning and interference
- Geochemistry and Geologic Mapping
- Geotechnical and Geomechanical Engineering
- Geomagnetism and Paleomagnetism Studies
- Methane Hydrates and Related Phenomena
- Geophysical Methods and Applications
- Geological Studies and Exploration
- Geophysical and Geoelectrical Methods
- Spectroscopy Techniques in Biomedical and Chemical Research
- melanin and skin pigmentation
- High-pressure geophysics and materials
- Radioactivity and Radon Measurements
- Sensor Technology and Measurement Systems
- Geophysics and Gravity Measurements
- Chalcogenide Semiconductor Thin Films
- Solar and Space Plasma Dynamics
- Landslides and related hazards
- Quantum Dots Synthesis And Properties
- Spectroscopy and Chemometric Analyses
University of Bari Aldo Moro
2015-2025
University of Nis
2022
Vulcan (United States)
2012
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2002-2012
Polytechnic University of Bari
2002-2009
University of Foggia
2009
University of Rome Tor Vergata
2009
University of Electro-Communications
2008
University of Bologna
1993-2005
Istituto Nazionale per la Fisica della Materia
2002
Abstract. We present a general concept of mechanisms preseismic phenomena in the atmosphere and ionosphere. After short review observational results we conclude: 1. Upward migration fluid substrate matter (bubble) can lead to ousting hot water/gas near ground surface cause an earthquake (EQ) itself strength-weakened area; 2. Thus, time place bubble appearance could be random values, but EQ, geochemistry anomaly foreshocks (seismic, SA ULF electromagnetic ones) are casually connected; 3....
Abstract. The analysis of the VLF signals radiated by ground transmitters and received on board French DEMETER satellite, reveals a drop (scattering spot) connected with occurrence large earthquakes. extension "scattering spots" zone is enough (1000–5000 km) and, probably, it increases magnitude "relative" earthquake. A possible model to explain phenomenology, based acoustic gravity waves ionosphere turbulence, proposed. method diagnostics applied this study has advantage be global one due...
We study the sub-ionospheric VLF transmitter signals recorded by Austrian Graz station in year 2020. Those radio are known to propagate Earth-ionosphere waveguide between ground and lower ionosphere. The facility (geographic coordinates: 15.46°E, 47.03°N) can receive such signals, particularly those propagating above earthquake (EQ) regions southern part of Europe. consider this work amplitude variations a few weeks before occurrence two EQs Croatia at distance less than 200 km from...
Abstract. The VLF/LF radio signals method for studying preseimic activity is applied to the Abruzzo earthquake (M=6.3, 6 April 2009). data collected by three receivers located in Moscow (Russia), Graz (Austria) and Bari (Italy) at about 3000 km, 1000 km 500 from epicenter were used. received Sardinia (20.27 kHz) Sicily (45.9 transmitters, both Italy, compared with those Iceland (37.5 kHz), Great Britain (19.58 Germany (23.4 transmitters. propagation paths of two Italian transmitters cross...
Various types of changes in the characteristics very low frequency (VLF) signals before earthquakes have been presented during past few decades. Most these observed on data with time sampling order a tenths second or minutes. Improvements this recent years indicated three new whose onsets minutes tens earthquake. These manifest themselves as reductions VLF signal amplitude and phase noises, excitation attenuation waves small wave periods both [1-5].In work, we present list parameters domains...
Electric field amplitude and phase measurements between narrowband VLF/LF transmitters receivers in the sub-ionospheric waveguide are affected altered by man-made natural sources (Nina 2024; Boudjada et al., 2024a,b). In this study we investigate Mw≥5.0 earthquakes (EQs) which occurred Europe during year 2024 based on data from INFREP receiver network (Biagi 2019; Moldovan 2015; Galopeau 2023). selected Mediterranean area with geographical longitude [-10°E, 40°E]...
In recent decades, significant efforts have been devoted to understanding and interpreting the link between ionospheric perturbations natural or anthropogenic phenomena, such as seismic activity, electrical geomagnetic storms, unidentified radio emissions. This is achieved through various methods among which also study of electromagnetic (EM) wave propagation in very low frequency (VLF, 3–30 kHz) (LF, 30–300 bands. These bands enable long-distance communication,...
Abstract. We analyze variations of the LF subionospheric signal amplitude and phase from JJY transmitter in Japan (F=40 kHz) received Petropavlovsk-Kamchatsky station during seismically quiet active periods including also magnetic storms. After 20 s averaging, frequency range analysis is 0.28–15 mHz that corresponds to period 1 60 min. Changes spectra perturbations are found several days before after three large earthquakes, which happened November 2004 (M=7.1), August 2005 (M=7.2) 2006...
Abstract. The results of the monitoring three VLF/LF signals collected in Petropavlovsk station (Kamchatka, Russia) and one VLF signal on board DEMETER French satellite are presented. Two periods seismic activity occurred Japan-Kamchatka area during November–December 2004 July–September 2005 were investigated earthquakes with M≥6.0 area, located inside or more third Fresnel zones radio paths considered. ground data analysed using residual phase dP amplitude dA, defined as difference between...
Abstract. In the last years disturbances in VLF/LF radio signals related to seismic activity have been presented. The data were collected by receivers located on ground or satellites. ground-based research implies systematic collection a network of receivers. Since 2000 "Pacific VLF network", conducted Japanese researchers, has operation. During 2008 receiver was developed Italian factory Elettronika (Palo del Colle, Bari). is equipment working and LF bands. It can monitor 10 frequencies...
Some Investigators of Istitute Physics and Geology the University Rome are carrying out measurements tilt groundwater radon content in sites located Central Italy. Beginning from June to November 1980 anomalous variations have been detected Rieti sites. Water samples for discrete were drawn periodically underground strata. The amplitude anomalies 25% 170% compared with background level. From about March 15 a bubble type tiltmeter installed at L'Aquila site showed first tilting time scale two...
A devastating earthquake of magnitude 6.9 occurred in Southern Italy on 23rd November 1980 Irpinia-Basilicata area. Variations different geochemical, atmospheric and ionospheric parameters electromagnetic emissions were registered around the time Irpinia earthquake. The substantial progress reached understanding physics thermal anomalies associated with preparation process permitted us to create Lithosphere-Atmosphere-Ionosphere (LAI) coupling model published recently. It shows that observed...
Abstract. In this paper, we report the observation of a significant decrease vertical component atmospheric electrical field in Évora region (Portugal) during M = 4.1 Sousel earthquake 27 March 2010. The epicentre was 52 km from site, which falls within theoretical preparation radius. A simple interpretation based on hypothetical radon emissions is presented, and future experiments required to elucidate these observations are outlined. To our knowledge, first reported preceding an earthquake.
Abstract. Among radio signals, low frequency (LF) signals lie in the band between 30–300 kHz. Monitoring equipment with ability to measure electric strength of such at field sites, were designed and assembled Italy. From 1993 onwards, MCO (216 kHz, France) broadcasting station has been collecting measurements two sites central Italy that chosen according very noise levels. At end 1996, from CLT (189 Italy) CZE (270 Czech Republic) stations included measurements. Meteorological data also...
Abstract. On 6 April 2009 a strong (Mw=6.3) earthquake occurred in the Abruzzo region (central Italy). Since 1996, intensity of CLT (f=189 kHz, Sicily, Italy), MCO (f=216 France) and CZE (f=270 Czech Republic) broadcast signals has been collected with ten minutes sampling rate by receiver operating place located about 13 km far from epicenter. During March 2009, old was substituted new one able to measure, minute rate, five VLF LF radiated transmitters different zones Europe. The mentioned...
VLF/LF (20 - 300 kHz) radio waves propagation is affected by different factors such as meteorological conditions, solar bursts and geomagnetic activity. At the same time, variations of some parameters in ground, atmosphere ionosphere occurring during preparatory phase earthquakes can produce disturbances previous signals along their paths: these are precursors. Since 2009, several receivers have been installed throughout Europe order to realize a European (VLF/LF) network for studying...