Radio Direction Finding (RDF) - Geomagnetic Monitoring Study of the Himalaya Area in Search of Pre-Seismic Electromagnetic Signals

Abstract

The study proposes to present data on the broadband electromagnetic monitoring (SELF-VLF band, 0-32000 Hz) able to work 24h7, within the electromagnetic monitoring network with RDF (Radio Direction Finding) technology. The area monitored for the experimentation is the Himalayan one, historically hit by strong and devastating earthquakes. The study collected 2991 groups of radio-anomalies, related to the crustal diagnosis and to non-destructive earthquakes. It is the first network of this type able to work on a wide bandwidth (ELF-VLF band, 0-32000 Hz) specially designed to study the so-called "Seismic Electromagnetic Precursors" (SEPs) and the "Seismic Geomagnetic Precursors" "(SGPs). This monitoring system, based on RDF technology, has been active since 2017. In questo studio viene proposta una nuova chiave di lettura dei candidate precursori sismici, sperimentabili e verificabili anche in altre parti del mondo. The areas remotely monitored by the experimental station of Rome and Pisa, in Italy, thousands of kilometers away show a convergence of the data and, in particular, the frequency bands that appear before the earthquakes of magnitude equal to or greater than 4.5 of the Richter scale, about 72 hours before the main shock. The direction of the electromagnetic signal of the future epicentral area is intercepted by the RDF system. This is the first study for the analysis of EM precursors worldwide.

Radio Direction Finding, a New Method for the Investigation of Presismic Phenomena. The Case of Japan

“…This indicates how electromagnetic emissions are closely related to seismic events. The most likely hypothesis is [15] IJESRT is licensed under a Creative Commons Attribution 4.0 International License.…”

“…The data from this innovative research on Electromagnetic Seismic Precursors (ESP) provided important indications that found acceptance even within the international scientific community [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30]. A new phase of research opened in 2019: the authors began a project to monitor electromagnetic anomalies that had azimuth compatible with the seismic district of Japan: a geographical area approximately 9,800 km from the RDF station of Lariano (Rome, Italy) (Fig.…”

Radio Direction Finding Method to Mitigate Tsunami Risk in Sierra Leone

“…Electromagnetic anomalies were observed, for example, on March 11, 2011 before the earthquake that occurred in Japan [1] , or those of the Peruvian earthquake of September 25, 2013 [2] , or even those recorded on August 24, 2016 in Italy [3] . These cases are just some of the earthquakes preceded by electromagnetic emissions or electromagnetic anomalies recorded on a global scale [4][5][6][7][8] . It was 1890 when the British geologist John Milne, inventor of the eponymous horizontal seismograph, a professor at the Imperial College of Engineering in Tokyo and founder of the Seismological Society of Japan (SSJ), in his work entitled "Earthquakes in Connection with Electric and Magnetic Phenomena" [9] , described some electrical phenomena magnetic and related to seismic activity.…”