scholarly journals Strong variations of gamma-ray and atmospheric electric field during various meteorological conditions by observations in Yakutsk and Tiksi

2018 ◽  
Vol 62 ◽  
pp. 01013 ◽  
Author(s):  
Anatoliy Toropov ◽  
Sergey Starodubtzev ◽  
Vladimir Kozlov
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Weather Conditions ◽  
Heavy Precipitation ◽  
Atmospheric Electric Field ◽  
Strong Increase ◽  
Gamma Background ◽  
Academy Of Sciences

The results of a study strong increase in gamma-ray background in the surface layer of the atmosphere during precipitation and near thunderstorms in Yakutsk (based on the Cosmic Ray Spectrometer of the Institute of Cosmic Rays of the Siberian Branch of the Russian Academy of Sciences) and Tiksi (Polar Geospace Observatory of the IKFIA SB RAS) are present in this paper. Scintillation detectors based on NaI (Tl) crystals with a size of 63mm x 63mm are used to register gammaray . The range of measured energies is 20-1900 keV. Detectors are closed from the sides and from below with lead (5 cm) and placed in thermoboxes having a glass window. Both of the detectors are located on the roof of buildings in Yakutsk and Tiksi. Also, synchronous registration of variations of the atmospheric electric field, (electrostatic fluxmeters Boltek EFM-100) and main meteorological parameters of the atmosphere (ultrasonic weather station AMK-04). An explicit relationship was found between the increase in the background gamma-ray and heavy rainfall. The energy spectra of the gamma background are obtained under “good” weather conditions and during heavy precipitation and near thunderstorms. The carried out researches allow to consider that the increase of the gamma background is connected, first of all, with the emission of radon and its daughter products from the ground and, to a lesser extent, with bremsstrahlung of charged particles in strong electric fields of a thunderstorm atmosphere.

scholarly journals Variations of gamma-ray during thunderstorm by observations in Yakutsk

2020 ◽  
Vol 196 ◽  
pp. 01012
Author(s):  
Anatoliy Toropov ◽  
Sergey Starodubtsev ◽  
Vladimir Kozlov ◽  
Juriy Balabin
Keyword(s):  
Electric Field ◽  
Gamma Ray ◽  
Cosmic Ray ◽  
Measurement Range ◽  
Analog Signal ◽  
Gamma Detector ◽  
Gamma Background ◽  
Lightning Discharges ◽  
In Series ◽  
Electromagnetic Signals

The paper presents the results of a study of the increase in the gamma background in the surface layer of the atmosphere during near thunderstorms in Yakutsk (based on the Cosmic Ray Spectrograph of the IKFIA SB RAS). To register the gamma background, scintillation detectors based on NaI (Tl) crystals with a size of 63mm x 63mm are used. The range of measured energies is 20-1900 keV. The detectors are closed from the sides and bottom with lead (5 cm) and placed in thermoboxes with a glass window. The detector is located on the roof of the Cosmic Ray Spectrograph building in Yakutsk. Also, synchronous registration of the atmospheric electric field strength was carried out using an atmosphere electric field – mill sensor (with measurement range +/- 50 kV / m).The data of continuous recording of an analog signal from a detector during the nearest thunderstorms of 2018 were considered. The analog signal from the gamma detector was fed to the first channel of the E20-10 ADC (L-Card) and recorded continuously on the computer hard disk for one hour (during a thunderstorm) in series of 10 minutes. A signal from an active broadband dipole P-10 antenna (0.9 kHz - 900 MHz bandwidth) was fed to the second channel and was also recorded in one file together with the signal from the gamma detector. Synchronous recording of signals from the gamma detector and from the antenna allows accurate timing of gamma photons to electromagnetic signals from nearby lightning. In the studied thunderstorms, based on the results of the analysis of the data obtained, statistically significant variations in the count rate and shapes of the spectrum of gamma – ray at the moment of lightning discharges were found.

scholarly journals Atmospheric electric field in the Atlantic marine boundary layer: first results from the SAIL project

2020 ◽  
Author(s):  
Susana Barbosa ◽  
Mauricio Camilo ◽  
Carlos Almeida ◽  
José Almeida ◽  
Guilherme Amaral ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Electric Field ◽  
Marine Boundary Layer ◽  
Weather Conditions ◽  
Cape Verde ◽  
The Other ◽  
Atmospheric Electric Field ◽  
Fair Weather ◽  
Near Surface ◽  
First Results

<p><span>The study of the electrical properties of the atmospheric marine boundary layer is important as the effect of natural radioactivity in driving near surface ionisation is significantly reduced over the ocean, and the concentration of aerosols is also typically lower than over continental areas, allowing a clearer examination of space-atmosphere interactions. Furthermore, cloud cover over the ocean is dominated by low-level clouds and most of the atmospheric charge lies near the earth surface, at low altitude cloud tops. </span></p><p><span>The relevance of electric field observations in the marine boundary layer is enhanced by the the fact that the electrical conductivity of the ocean air is clearly linked to global atmospheric pollution and aerosol content. The increase in aerosol pollution since the original observations made in the early 20th century by the survey ship Carnegie is a pressing and timely motivation for modern measurements of the atmospheric electric field in the marine boundary layer. Project SAIL (Space-Atmosphere-Ocean Interactions in the marine boundary Layer) addresses this challenge by means of an unique monitoring campaign on board the ship-rigged sailing ship NRP Sagres during its 2020 circumnavigation expedition. </span></p><p><span>The Portuguese Navy ship NRP Sagres departed from Lisbon on January 5th in a journey around the globe that will take 371 days. Two identical field mill sensors (CS110, Campbell Scientific) are installed </span><span>o</span><span>n the mizzen mast, one at a height of 22 m, and the other at a height of 5 meters. </span><span>A visibility sensor (SWS050, Biral) was also set-up on the same mast in order to have measurements of the extinction coefficient of the atmosphere and assess fair-weather conditions.</span><span> Further observations include gamma radiation measured with a NaI(Tl) scintillator from 475 keV to 3 MeV, cosmic radiation up to 17 MeV, and atmospheric ionisation from a cluster ion counter (Airel). The</span><span> 1 Hz measurements of the atmospheric electric field</span><span> and from all the other sensors</span><span> are </span><span>linked to the same rigorous temporal reference frame and precise positioning through kinematic GNSS observations. </span></p><p><span>Here the first results of the SAIL project will be presented, focusing on fair-weather electric field over the Atlantic. The observations obtained in the first three sections of the circumnavigation journey, including Lisbon (Portugal) - Tenerife (Spain), from 5 to 10 January, Tenerife - Praia (Cape Verde) from 13 to 19 January, and across the Atlantic from Cape Verde to Rio de Janeiro (Brasil), from January 22nd to February 14th, will be presented and discussed.</span></p>

Atmospheric Electric Field Data Logger System

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
Muhammad Abu Bakar Sidik ◽  
Nuru Saniyyati Che Mohd Shukri ◽  
Hussein Ahmad ◽  
Zolkafle Buntat ◽  
Nouruddeen Bashir ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Virtual Instrument ◽  
Field Data ◽  
Daily Basis ◽  
Atmospheric Electric Field ◽  
Navigation Systems ◽  
Data Logging ◽  
Data Logger ◽  
Function Generator

Weather can  be unpredictable as there are a lot of uncertainties in predicting thunderstorms. Most of our navigation systems, including those on air, land and water, as well as broadcasting systems, are directly affected by the weather on a daily basis. The inconsistent and unreliable nature of storms brings out the importance of research in atmospheric electric field data logging systems. This paper presents a study to develop a virtual instrument with the capability to analyse and store the magnitude (data) of atmospheric electric fields. The study was carried out using a LabVIEW virtual instrument and tested using data acquisition (DAQ) and a function generator. The developed virtual instrument consists of waveform chart, tabulated data, and histogram for real time observation. Moreover, it has feature to save and recall data for further analysis.

Study of the electric field variation based on preliminary observations at the ENU cosmophysical complex in 2020

2021 ◽  
Vol 102 (2) ◽  
pp. 25-32
Author(s):  
Ye. Tulekov ◽  
◽  
А.К. Morzabaev ◽  
V.S. Makhmutov ◽  
V.I. Yerkhov ◽  
...  
Keyword(s):  
Electric Field ◽  
Meteorological Data ◽  
Cosmic Ray ◽  
Atmospheric Electric Field ◽  
Field Variation ◽  
Atmospheric Physics ◽  
National University ◽  
Experimental Complex ◽  
Relationship Of ◽  
The Relationship

The atmospheric electric field Ez is the most urgent problem of study of the physics of the atmosphere and the processes occurring in it. The conducted studies show the relationship of the electric field with atmospheric processes. Monitoring its changes is necessary to solve practical problems. This article presents brief characteristics of the installation of the EFM-100 electrostatic fluxmeter of the scientific cosmophysical experimental complex at the L.N. Gumilyov Eurasian National University (ENU) and its experimental data obtained in 2020. The article presents the results of observation of atmospheric-electrical characteristics near the Earth's surface and monitoring of the electric field of the atmosphere of the city of Nur-Sultan, in particular, estimates of the variation of the electric field of the surface layer of the atmosphere during sunrise and sunset based on data obtained by the EFM-100 fluxmeter. The comparison of meteorological data with the data of the electric field strength of the atmosphere is given. The analysis of the days and months in September and October 2020, when the conditions of “good weather” were manifested, was carried out. The series of electric field data obtained at other measuring stations show the characteristic periodicity of the electric field behavior. It is established that the value of the atmospheric electric field increases during sunrise with the manifestation of the solar terminator effect. It is interesting to study the relationship between the magnitude of the electric field of the atmosphere and the intensity of the cosmic ray flux, especially in the case of Forbush effects. The data of the ENU ground-based experimental complex allows us to conduct research on the study of atmospheric physics, including atomic electricity, as well as their interaction with cosmic rays and meto-conditions.

scholarly journals Ground-Based Observations of Terrestrial Gamma Ray Flashes Associated with Downward-Directed Lightning Leaders

2019 ◽  
Vol 197 ◽  
pp. 03002
Author(s):  
Rasha Abbasi ◽  
John Belz ◽  
Ryan Le Von ◽  
Dan Rodeheffer ◽  
Paul Krehbiel ◽  
...  
Keyword(s):  
Electric Field ◽  
Gamma Rays ◽  
Gamma Ray ◽  
Three Dimensional ◽  
Temporal Distribution ◽  
Cosmic Ray ◽  
Ground Level ◽  
High Energy ◽  
Lightning Strikes ◽  
Lightning Discharges

Terrestrial gamma-ray flashes (TGFs) are bursts of gamma-rays initiated in the Earth’s atmosphere. TGFs were serendipitously first observed over twenty years ago by the BATSE gamma ray satellite experiment. Since then, several satellite experiments have shown that TGFs are produced in the upward negative breakdown stage at the start of intracloud lightning discharges. In this proceeding, we present ground-based observation of TGFs produced by downward negative breakdown occurring at the beginning of negative cloud-to-ground flashes. The Terrestrial gamma-ray flashes discussed in this work were detected between 2014-2017 at ground level by the Telescope Array surface detector (TASD) together with Lightning Mapping Array (LMA) and the slow electric field antenna (SA). The TASD detector is a 700 km2 ultra high energy cosmic ray detector in the southwestern desert of Utah. It is comprised of 507 (3 m2) plastic scintillator detectors on a 1.2 km square grid. The LMA detector, a three-dimensional total lightning location system, is comprised of nine stations located within and around the array. The slow electric field antenna records the electric field change in lightning discharges. The observed Gamma ray showers were detected in the first 1-2 ms of downward negative breakdown prior to cloud-to-ground lightning strikes. The shower sources were observed by the LMA detector at altitudes of a few kilometers above ground level. The detected energetic burst showers have a footprint on the ground typically ~ 3-5 km in diameter. The bursts comprise of several (2-5) individual pulses, each of which have a span of a few to tens of microseconds and an overall duration of several hundred microseconds. Using a forward-beamed cone of half-angle of 16 degrees, GEANT simulation studies indicate that the showers are consistent with gamma rays of 1012 - 1014 primary photons. We hypothesize that the observed terrestrial gamma-ray flashes are similar to those detected by satellites, but that the ground-based observations are closer to the source and therefore are able to observe weaker sources and report on the structure of the temporal distribution at the source. This result and future studies will enable us to better identify and constrain the mechanisms of downward TGF production.

Cosmic-ray atmospheric electric field effects

1995 ◽  
Vol 73 (7-8) ◽  
pp. 440-443 ◽  
Author(s):  
L. I. Dorman ◽  
I. V. Dorman
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Cosmic Ray ◽  
Atmospheric Electric Field ◽  
Electric Field Effect ◽  
Neutron Monitors ◽  
Muon Component ◽  
Electric Field Effects ◽  
Field Effects ◽  
Neutron Component

Experimental data on the atmospheric electric field effect in the cosmic-ray muon component are discussed on the basis of the general theory of cosmic-ray meteorological effects. In this framework, we develop the theory of atmospheric electric field effects in the hard- and soft-muons of secondary cosmic rays and in the neutron-monitor counting rates as well. We show that the experimental results can be understood on the basis of this theory. We also show that a sufficient atmospheric electric field effect in the cosmic-ray neutron component is to be expected because the neutron monitors work as analyzers of soft muons and really detect only negative muons as well as neutrons.

scholarly journals Earth electric field negative anomalies as earthquake precursors

2020 ◽  
Vol 196 ◽  
pp. 01004
Author(s):  
Sergey Smirnov
Keyword(s):  
Electric Field ◽  
Field Potential ◽  
Potential Gradient ◽  
Cosmic Ray ◽  
Weather Conditions ◽  
Fair Weather ◽  
Earthquake Forecast ◽  
Electric Field Potential ◽  
Galactic Cosmic Ray ◽  
Cosmic Ray Flux

In fair weather conditions, electric field potential gradient in the near-ground air takes positive values. Negative anomalies occur under the influence of different ionizing processes such as galactic cosmic ray flux and radioactive gas emanation from the ground. In the conditions of calm geomagnetic state and fair weather, anomalies can be used for earthquake forecast. In the paper, the efficiency of earthquake forecast based on negative anomalies is under the study. It was obtained that the efficiency of such a forecast during any weather conditions is 10%.

scholarly journals Evaluation of Monte Carlo tools for high energy atmospheric physics II: relativistic runaway electron avalanches

2018 ◽  
Author(s):  
David Sarria ◽  
Casper Rutjes ◽  
Gabriel Diniz ◽  
Alejandro Luque ◽  
Kevin M. A. Ihaddadene ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Runaway Electron ◽  
Gamma Ray ◽  
Full Range ◽  
High Energy ◽  
Atmospheric Physics ◽  
Average Electron Energy ◽  
Electron Avalanches ◽  
Set Up

Abstract. The emerging field of High Energy Atmospheric Physics studies events producing high energy particles and associated with thunderstorms, such as terrestrial gamma-ray flashes and gamma-ray glows. Understanding these phenomena requires appropriate models of the interaction of electrons, positrons and photons with air and electric fields. This work is made as a continuation of Rutjes et al. (2016), now including the effects of electric fields. We investigated results of three codes used in the community (Geant4, GRRR and REAM), for simulating the process of Relativistic Runaway Electron Avalanches. From analytical considerations, we show that the avalanche is mainly driven by electric fields and the ionisation and scattering processes determining the minimum energy of electrons that can runaway. To investigate this point further, we used a first simulation set-up to estimate the probability to produce a RREA from a relevant range of electron energies and electric field magnitudes. We found that the stepping methodology is important, and the stepping parameters have to be set up very carefully for Geant4. For example, a too large step size can lead to an avalanche probability reduced by a factor of 10, or a 40 % over-estimation of the average electron energy. Furthermore, the probability for the particles below 10 keV to accelerate and participate in the penetrating radiation is actually negligible for the full range of electric field we tested (E 

Analysis of the Variability in the Atmospheric Electric Field and Natural Gamma Radiation in Different Weather Conditions

2021 ◽  
Author(s):  
Rafael Ricardo Rosa de Oliveira ◽  
José Tacza ◽  
Jean-Pierre Raulin ◽  
Sergio Szpigel ◽  
Vladimir Makhmutov ◽  
...  
Keyword(s):  
Electric Field ◽  
Gamma Radiation ◽  
Weather Conditions ◽  
Atmospheric Electric Field ◽  
Natural Gamma
Sign in / Sign up

Export Citation Format

Share Document