scholarly journals Statistical similarity between high energy charged particle fluxes in near-earth space and earthquakes

2014 ◽  
Vol 2 (5) ◽  
pp. 3183-3192 ◽  
Author(s):  
P. Wang ◽  
Z. Chang ◽  
H. Wang ◽  
H. Lu
Keyword(s):  
Charged Particle ◽  
High Energy ◽  
High Energy Particle ◽  
Earth Space ◽  
Near Earth Space ◽  
Scaling And Universality ◽  
Statistical Similarity ◽  
Temporal Occurrence ◽  
Particle Fluxes ◽  
High Degree

Abstract. It has long been noticed that rapid short-term variations of high energy charged particle fluxes in near-Earth space occur more frequently several hours before the main shock of earthquakes. Physicists wish that this observation supply a possible precursor of strong earthquakes. Based on DEMETER data, we investigate statistical behaviors of flux fluctuations for high energy charged particles in near-Earth space. Long-term clustering, scaling, and universality in the temporal occurrence are found. There is high degree statistical similarity between high energy charged particle fluxes in near-Earth space and earthquakes. Thus, the observations of the high energy particle fluxes in near-Earth space may supply a useful tool in the study of earthquakes.

scholarly journals High-energy charged particle bursts in the near-Earth space as earthquake precursors

2003 ◽  
Vol 21 (2) ◽  
pp. 597-602 ◽  
Author(s):  
S. Yu. Aleksandrin ◽  
A. M. Galper ◽  
L. A. Grishantzeva ◽  
S. V. Koldashov ◽  
L. V. Maslennikov ◽  
...  
Keyword(s):  
Charged Particle ◽  
Electromagnetic Emission ◽  
High Energy ◽  
Energetic Particles ◽  
Strong Earthquakes ◽  
Earth Space ◽  
Ionospheric Physics ◽  
Near Earth Space ◽  
Space Experiments ◽  
Seismic Origin

Abstract. The experimental data on high-energy charged particle fluxes, obtained in various near-Earth space experiments (MIR orbital station, METEOR-3, GAMMA and SAMPEX satellites) were processed and analyzed with the goal to search for particle bursts. Particle bursts have been selected in every experiment considered. It was shown that the significant part of high-energy charged particle bursts correlates with seismic activity. Moreover, the particle bursts are observed several hours before strong earthquakes; L-shells of particle bursts and corresponding earthquakes are practically the same. Some features of a seismo-magnetosphere connection model, based on the interaction of electromagnetic emission of seismic origin and radiation belt particles, were considered. Key words. Ionospheric physics (energetic particles, trapped; energetic particles, precipitating; magnetosphere-ionosphere interactions)

scholarly journals A Fast Universal Kinematic Fitting Code for Low-Energy Nuclear Physics: FUNKI_FIT

Physics ◽  
2019 ◽  
Vol 1 (3) ◽  
pp. 375-391 ◽  
Author(s):  
Robin Smith ◽  
Jack Bishop
Keyword(s):  
Charged Particle ◽  
Particle Physics ◽  
Nuclear Physics ◽  
High Energy ◽  
Low Energy ◽  
High Energy Particle ◽  
Monte Carlo Data ◽  
Standard Data ◽  
Strip Detectors ◽  
Low Energy Nuclear Physics

We present an open-source kinematic fitting routine designed for low-energy nuclear physics applications. Although kinematic fitting is commonly used in high-energy particle physics, it is rarely used in low-energy nuclear physics, despite its effectiveness. A FORTRAN and ROOT C++ version of the FUNKI_FIT kinematic fitting code have been developed and published open access. The FUNKI_FIT code is universal in the sense that the constraint equations can be easily modified to suit different experimental set-ups and reactions. Two case studies for the use of this code, utilising experimental and Monte–Carlo data, are presented: (1) charged-particle spectroscopy using silicon-strip detectors; (2) charged-particle spectroscopy using active target detectors. The kinematic fitting routine provides an improvement in resolution in both cases, demonstrating, for the first time, the applicability of kinematic fitting across a range of nuclear physics applications. The ROOT macro has been developed in order to easily apply this technique in standard data analysis routines used by the nuclear physics community.

scholarly journals RADIATION HAZARD ON EARTH AND IN NEAR-EARTH SPACE DURING MAGNETIC FIELD INVERSION

2019 ◽  
Vol 47 (1) ◽  
pp. 129-131
Author(s):  
O.O. Tsareva ◽  
V.Yu. Popov ◽  
H.V. Malova ◽  
E.P. Popova ◽  
M.V. Podzolko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Energy ◽  
Field Configuration ◽  
Radiation Hazard ◽  
Dynamo Model ◽  
Earth Space ◽  
Near Earth Space ◽  
The Earth ◽  
The Magnetic Field ◽  
Field Inversion

Recent observations, such as the magnetic field strength decrease, a magnetic poles shifts and the South Atlantic anomaly increase, may indicate the beginning of the Earth’s magnetic field inversion. According to the geomagnetic dynamo model, the dipole component of the magnetic field is zeroed at the inversion time, and the quadrupole one becomes dominant. To assess the occurrence of radiation hazards on the Earth’s surface and in near-Earth space at the time of magnetic field inversion, a numerical model was developed that made it possible to compare the GCR and SCR fluxes (at minima and maxima of solar activity) penetrating the Earth (taking into account the atmosphere) and the ISS in periods of the dipole and quadrupole fields dominance. It was found that during the period of inversion the flow of GCR (high-energy particles) can increase no more than three times over the entire surface of the Earth and the radiation dose will not exceed permissible one for man. Also, a change of the magnetic field configuration will redistribute areas of increased radiation on the Earth’s surface (today these are the poles of the Earth), which can adversely affect people’s health in these areas.

scholarly journals The August 2018 Geomagnetic Storm Observed by the High-Energy Particle Detector on Board the CSES-01 Satellite

2021 ◽  
Vol 11 (12) ◽  
pp. 5680
Author(s):  
Francesco Palma ◽  
Alessandro Sotgiu ◽  
Alexandra Parmentier ◽  
Matteo Martucci ◽  
Mirko Piersanti ◽  
...  
Keyword(s):  
Charged Particle ◽  
Geomagnetic Storm ◽  
Rate Increase ◽  
Low Frequency ◽  
Resonant Interaction ◽  
High Energy ◽  
High Energy Particle ◽  
Particle Detector ◽  
Energy Particle ◽  
Substorm Activity

On 25 August 2018, a G3-class geomagnetic storm reached the Earth’s magnetosphere, causing a transient rearrangement of the charged particle environment around the planet, which was detected by the High-Energy Particle Detector (HEPD) on board the China Seismo-Electromagnetic Satellite (CSES-01). We found that the count rates of electrons in the MeV range were characterized by a depletion during the storm’s main phase and a clear enhancement during the recovery caused by large substorm activity, with the key role played by auroral processes mapped into the outer belt. A post-storm rate increase was localized at L-shells immediately above ∼3 and mostly driven by non-adiabatic local acceleration caused by possible resonant interaction with low-frequency magnetospheric waves.

Satellite experiment ARINA for studying seismic effects in the high-energy particle fluxes in the Earth’s magnetosphere

2007 ◽  
Vol 45 (5) ◽  
pp. 445-448 ◽  
Author(s):  
A. V. Bakaldin ◽  
A. G. Batishchev ◽  
S. A. Voronov ◽  
A. M. Galper ◽  
L. A. Grishantseva ◽  
...  
Keyword(s):  
High Energy ◽  
High Energy Particle ◽  
Energy Particle ◽  
Seismic Effects ◽  
Earth’S Magnetosphere ◽  
Earth's Magnetosphere ◽  
Satellite Experiment ◽  
Particle Fluxes

scholarly journals Analysis of NOAA particle data and correlations to seismic activity

2008 ◽  
Vol 8 (6) ◽  
pp. 1277-1291 ◽  
Author(s):  
C. Fidani ◽  
R. Battiston
Keyword(s):  
Seismic Activity ◽  
High Energy ◽  
High Energy Particle ◽  
Space Experiments ◽  
General Rules ◽  
Particle Fluxes ◽  
Anomalous Particle ◽  
Ap Index ◽  
Reported Data ◽  
Future Work

Abstract. A decade of NOAA-15 particle flux data offers an opportunity to test claims of correlations between seismic activity and effects on the ionosphere. Over the last two decades, potentially interesting observations in the ionosphere-magnetosphere transition region have been investigated. Specifically these consists of anomalous particle fluxes detected by several space experiments and correlated with the earthquake occurrence. These particle fluxes are characterised by anomalous short-term and sharp increases in high energy particle counting rates, referred to as particle bursts. In this work, more general rules for particle bursts selection have been defined and tested on the NOAA database, for particles inside and outside the South Atlantic Anomaly region. The whole period of ten years burst activity from NOAA-15 database is reported. Data from four satellites, NOAA-15, 16, 17 and 18, were analyzed during periods of solar quiet activity in connection with strong earthquakes, revealing presence of bursts detected on more than one satellite close to the time of the same seismic events. This preliminary study presented here concentrates on periods of major Indonesian earthquakes from 1998 to date, including Sumatra event M=9, during which geomagnetic Ap index was less than 16 and with no sudden ionospheric disturbances. During this period particle burst temporal distributions have shown some correspondence with earthquake times. The limits of the analysis presented in this papers are discussed as well as prospects for future work.

scholarly journals Terrestrial gamma-ray flashes as the high-energy effect of tropospheric thunderstorms in near-Earth space

2020 ◽  
Vol 50 (12) ◽  
pp. 129506
Author(s):  
FanChao LYU ◽  
Jing YANG ◽  
BaoYou ZHU ◽  
DongShuai LI ◽  
ShaoLing XIONG ◽  
...  
Keyword(s):  
Gamma Ray ◽  
High Energy ◽  
Energy Effect ◽  
Earth Space ◽  
Near Earth Space

scholarly journals Method of Wavelet-Decomposition to Research Cosmic Ray Variations: Application in Space Weather

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2313
Author(s):  
Oksana Mandrikova ◽  
Bogdana Mandrikova
Keyword(s):  
Cosmic Rays ◽  
Space Weather ◽  
Outer Space ◽  
Cosmic Ray ◽  
High Energy ◽  
Radiation Hazard ◽  
Interstellar Space ◽  
Radio Communication ◽  
Earth Space ◽  
Near Earth Space

Since their discovery, cosmic rays have been an integral part of the development of fundamental physics, from the discovery of radiation coming to the Earth from outer space and the identification of high-energy particles in it, as well as new fundamental symmetries in the laws of nature, to the knowledge of residual matter and magnetic fields in interstellar space. Cosmic rays are used in a number of fundamental and applied research in solar-terrestrial physics and are important in the research of the near-Earth space processes. Cosmic ray variations observed on the Earth’s surface are an integral result of various solar, heliospheric, magnetospheric and atmospheric phenomena. The most significant changes in cosmic ray parameters are caused by coronal mass ejections and subsequent changes in the parameters of the interplanetary magnetic field and solar wind. Therefore, the study of cosmic rays makes it possible to obtain valuable information about the processes in the near-Earth space and in the Earth’s magnetosphere during disturbed periods. This article proposes a method for analyzing cosmic ray variations. It is based on the use of wavelet data decomposition operations and their combination with threshold functions. By using adaptive thresholds, the operations for detecting anomalous changes in data and for suppressing the noise were developed. Anomalies in cosmic rays can cause radiation hazard for astronauts, radio communication failures, as well as malfunctions in satellites, leading to the loss of orientation and destruction. Therefore, the task of timely diagnostics of anomalies is urgent. The paper describes the algorithms for the implementation of the method and shows their application in the space weather problem. We used data from the network of ground stations of neutron monitors. The efficiency of the method for detecting abnormal changes of different amplitudes and durations is shown. Application of the method made it possible to detect clearly and to evaluate Forbush effects in cosmic rays, which precede the onset of magnetic storms of various nature and strength.

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