BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:The TRASGO Program. Current status and first results DTSTART;VALUE=DATE-TIME:20210608T133500Z DTEND;VALUE=DATE-TIME:20210608T140000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-137@indico.nevod.mephi.ru DESCRIPTION:Speakers: Damian Garcia-Castro (LABCAF - IGFAE / USC)\nResearc h in cosmic rays is of interest for many fields of science: from Astrophy sics and Solar Physics to the forecasting of magnetic storms or vulcanolo gy. For such purposes many detectors using different techniques have been designed and are operative all around the world. A common feature of most of the neutron and muon monitors used at the Earth's surface for the regul ar survey of the cosmic ray background is that they are constrained to the measurement of single particles. As a consequence they only provide integ ral fluxes above a given energy threshold.\n\nTRASGO is the acronym of “ TRAck reconStructinG bOx” and the name corresponds to a project aiming t he development of a set of high granularity tracking cosmic ray detectors sensitive to bundles of either muons or electrons and even of making a rou gh calorimetry of electrons. These features do allow a single ground based detector to measure cosmic ray background fluxes above different energy t hresholds and\, making use of the response function\, to survey the primar y cosmic ray flux in different energy ranges.\n\nActually\, two Trasgo det ectors are operative: TRAGALDABAS\, located in Santiago de Compostela and TRISTAN\, located in a Spanish Base in Antarctica. Two new detectors are b eing built as a part of the STRATOS project and will be installed at a dis tance of about 100 km far from TRAGALDABAS.\n\nIn this talk we will review the main features of the Trasgo detectors and some tools that are being d eveloped within the framework of the program. We will also present some re sults related with the muon/electron separation capability of TRAGALDABAS and two cosmic ray surveys at different geomagnetic latitudes performed by the TRISTAN detector between Vigo (Spain) and Punta Arenas (Chile) in 201 8 and 2019.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/137/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/137/ END:VEVENT BEGIN:VEVENT SUMMARY:Temperature effect of muons in the atmosphere and diagnostics of t he thermobaric regime of the atmosphere using cosmic rays DTSTART;VALUE=DATE-TIME:20210610T083500Z DTEND;VALUE=DATE-TIME:20210610T090000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-144@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vasiliy Kuzmenko ()\nVariations in the intensity of cosmic rays observed in the depth of the atmosphere include the atmospheri c component of the variations. Muon telescopes of cosmic rays\, along with the barometric effect\, have a significant temperature effect due to the instability of the detected particles. These variations\, caused by change s in atmospheric temperature\, are superimposed on continuous observations of muon telescopes. Therefore\, their exclusion is extremely necessary\, especially in the data of modern muon telescopes\, the statistical accurac y of which is very high. The contributions of different layers of the atmo sphere to the total temperature effect for muons are not the same. This co ntribution is characterized by the distribution of the density of temperat ure coefficients for muons in the atmosphere. To correctly take into accou nt the temperature effect in the data of muon telescopes\, it is necessary to know the distribution of the density of temperature coefficients for m uons in the atmosphere and data on the altitude profile of the atmospheric temperature. Temperature coefficients have been found by now using calcul ations that contain a number of assumptions and do not take into account m any geometric and design features of telescopes. The availability of upper -air sounding data is limited. The estimation of the meteorological coeffi cients of the intensity of muons recorded in the depth of the atmosphere w as carried out according to the data of long-term continuous observations using various methods of factor analysis: correlation-regression analysis and the method of principal components. The temperature component of varia tions in the intensity of muons was found using spectrographic analysis of data from a complex of observations of the nuclear-active\, common ionizi ng and muon components of cosmic rays. The results obtained from the exper imental data are compared with the results of theoretical calculations. Ba sed on the data of the multichannel complex in Novosibirsk\, which provide s registration of the nuclear-active\, common ionizing and muon components \, temperature variations at various isobaric levels of the atmosphere ove r a long period have been found. The results obtained are compared with th e data of aerological sounding. As a result\, there is no need for aerolog ical sounding data for muon telescopes. In the near future\, it is planned to solve a similar problem for the Yakut cosmic ray spectrograph. Thus\, cosmic ray stations with muon telescopes can also provide information on t he temperature regime of the atmosphere.\n\nhttps://indico.nevod.mephi.ru/ event/6/contributions/144/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/144/ END:VEVENT BEGIN:VEVENT SUMMARY:Application of digital processing of muonogram time series to the analysis of extreme events in the heliosphere DTSTART;VALUE=DATE-TIME:20210610T082000Z DTEND;VALUE=DATE-TIME:20210610T083500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-145@indico.nevod.mephi.ru DESCRIPTION:Speakers: Viktor Getmanov (The Geophysical Center of the RAS)\ nExtreme events in the heliosphere that lead to anomalous muon flux variat ions\, registered by the URAGAN muon hodoscope (MH)\, developed by MEPhI\, are analyzed. MH measures two-dimensional muon flux intensity distributio n functions (MFIDF) for a system of solid angles with a predefined samplin g step\, that are concatenated into matrix data time series of muonograms – the MFIDF outpur data from the MH. It can be assumed that the correspo nding input MFIDF time series fall on the MH detectors. Assuming the MH li nearity\, input and output MFIDF are related by the hardware function (HF) . \nOccurrence of extreme events leads to occurrence of spatial and tempo ral MFIDF anomalousness in muonograms. Here\, the task of development of t he necessary mathematical tools for solving the problems of the mentioned extreme events is formulated\, based on digital processing of muonogram ti me series. \n The methods and algorithms propose here are divided into tw o categories. The first (supplementary) category includes one- and two-dim ensional filtering algorithms for reducing temporal and spatial noises in muonograms\, including elimination of daily variations\, and the HF estima tion algorithms. The second (main) category comprises the variants of anom alousness - local anisotropy (LA) - recognition methods for input MFIDF b ased on time series of muonograms. \n To reduce noises in muonograms\, the algorithms have been developed for one-dimensional sequential and paralle l temporal and two-dimensional spatial filtering. A method has been develo ped for estimating the normalized HF for MH based on multiparameter models . The method has been tested on model and experimental muonograms. \nA me thod has been proposed for LA analysis by estimating normalized variations (1) of input MFIDF with respect to normalized HFs\, using spatial-tempora l filtering. The method has been tested on model and experimental muonogra ms. \nA method has been proposed for LA analysis by estimating normalized variations (2) of input MFIDF with respect to averaged output MFIDF\, usin g spatial-temporal filtering. The method has been tested on model and expe rimental muonograms. \nA method has been proposed for LA analysis in muono grams\, based on calculation of confidence intervals systems for estimates of mathematical expectations of muonograms on reference and current confi dence intervals. An algorithm is designed for LA analysis (recognition)\, based on decision making procedures. The algorithm has been tested on mode l and experimental muonograms. \nThe proposed digital processing is a math ematical toolkit\, the effectiveness of which for the analysis of extreme events in the heliosphere has been confirmed by testing. \nThis work was f unded by the Russian Science Foundation (project No. 17-17-01215).\n\nhttp s://indico.nevod.mephi.ru/event/6/contributions/145/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/145/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigating thunderstorm activity in Moscow region via the metho d of muonography DTSTART;VALUE=DATE-TIME:20210610T080500Z DTEND;VALUE=DATE-TIME:20210610T082000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-143@indico.nevod.mephi.ru DESCRIPTION:Speakers: Alexandra Kachur (National Research Nuclear Universi ty MEPhI (Moscow Engineering Physics Institute))\nThunderstorms\, being on e of the dangerous atmospheric phenomena\, are studied by means of various methods. Measurements of the muon flux variations using muon hodoscopes o ffer a tool for detection\, study and possible prediction of the thunderst orm activity. \n\nThe URAGAN muon hodoscope (MH)\, located in Moscow\, Rus sia\, allows simultaneous detection of muons from all directions of the up per hemisphere. Using its data\, muon imaging (muonography) method can be applied to visualize disturbed areas of the atmosphere\, and the muon coun ting rate and muon flux anisotropy can be acquired. Using these characteri stics\, 235 thunderstorm event candidates were identified during the sprin g and summer periods of 2014 – 2020. 211 (90 %) of the event candidates were accompanied by a thunderstorm cell detection via an independent metho d within a ± 6-hour interval. \n\nBy comparing muon snapshots (muonograph s) and meteorological maps obtained by the Doppler weather radar DMRL-С i t was shown that disturbed areas with decreased muon counting rate corresp ond to the regions of thunderstorm activity. It was established that the t hunderstorm events detected using muon hodoscope URAGAN data are mainly as sociated with thunderstorm cells that occurred in the time interval of ± 2.5 hours from the event.\n\nhttps://indico.nevod.mephi.ru/event/6/contrib utions/143/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/143/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon tomography of large-scale objects DTSTART;VALUE=DATE-TIME:20210610T075000Z DTEND;VALUE=DATE-TIME:20210610T080500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-142@indico.nevod.mephi.ru DESCRIPTION:Speakers: Igor Yashin (National Research Nuclear University ME PhI (Moscow Engineering Physics Institute))\nCosmic ray muons arriving fro m the upper hemisphere to the Earth's surface\, are currently used to deve lop methods of muonography (analogous to radiography) of the internal stru cture of large-scale objects and relief\, such as volcanoes\, blast furnac es\, nuclear reactors\, etc. The article discusses various aspects\, metho ds and specific examples of penetrating muonography\, in particular\, as a pplied to the study of the structure о nuclear reactors.\n\nhttps://indic o.nevod.mephi.ru/event/6/contributions/142/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/142/ END:VEVENT BEGIN:VEVENT SUMMARY:Muonography of large natural and industrial objects DTSTART;VALUE=DATE-TIME:20210610T072500Z DTEND;VALUE=DATE-TIME:20210610T075000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-141@indico.nevod.mephi.ru DESCRIPTION:Speakers: Natalia Polukhina (LPI RAS)\, Zh.T. Sadykov ()\nThe fundamentals of the muonography method are presented\, and an overview of the main major experiments is presented. The results of modern muonograph ic studies in Russia\, carried out on the basis of this method with the us e of emulsion track detectors\, are presented.\n\nhttps://indico.nevod.mep hi.ru/event/6/contributions/141/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/141/ END:VEVENT BEGIN:VEVENT SUMMARY:Muonography method and the prospects of its further development DTSTART;VALUE=DATE-TIME:20210610T070000Z DTEND;VALUE=DATE-TIME:20210610T072500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-140@indico.nevod.mephi.ru DESCRIPTION:Speakers: Natalia Barbashina (National Research Nuclear Univer sity MEPhI (Moscow Engineering Physics Institute))\nMuonography is an anal og of other concepts as x-ray graphy\, electronography\, neutronography et c. based on the registration of penetrating radiation\, the interaction of which with investigated objects causes some changes in the initial flux o f used particles. Unlike all other particles\, the fluxes of which are for med artificially\, muons are of natural origin\, because they are formed a s a result of the interactions of primary cosmic rays with the nuclei of a toms in the atmosphere. Since muons with a good accuracy preserve the dire ction of motion of primary particles\, this opens up the possibility of st udying by means of the muon flux of perturbations in the heliosphere and m agnetosphere of the Earth\, the perturbations in which lead to variations in the flux of primary cosmic rays. Disturbances in the atmosphere directl y affect the muon flux. The report considers examples of the use of muonog raphy for the study of various processes and phenomena in the heliosphere\ , magnetosphere and atmosphere\, as well as some results of the search for predictors of dangerous disturbances in these three regions. As a part of the further development of muonography\, the expediency of creating a net work of muon hodoscopes in the Russian Federation is considered to solve t he problem of early detection of dangerous processes and phenomena over it s territory.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/140/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/140/ END:VEVENT BEGIN:VEVENT SUMMARY:On the very local interstellar spectra for galactic Helium-isotope s\, deuteron\, positrons and antiprotons DTSTART;VALUE=DATE-TIME:20210609T123500Z DTEND;VALUE=DATE-TIME:20210609T125000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-139@indico.nevod.mephi.ru DESCRIPTION:Speakers: Marius S Potgieter (IEAP\, CA University in Kiel)\nT he very local interstellar spectra (vLIS) for protons and total Helium (He )\, amongst other galactic cosmic rays (GCRs)\, were observed in situ by Voyager 1 below about 340 MeV/nuc since it had moved across the heliopaus e (HP). The latter is considered to be the boundary where the solar modula tion (GCRs) commences. Together with high precision PAMELA and AMS observa tions above 50 GeV at the Earth\, we reported previously on new vLIS calcu lated for protons\, total He\, other heavier isotopes and also for electro ns from 1 MeV to 100 GeV. We now follow up on this procedure to report on the vLIS detached for the isotopes He-4\, He-3\, and H-2. Combining comput ations done with the galactic propagation code\, GALPROP\, and our 3D modu lation model for GCRs in the heliosphere\, we have computed also vLIS’s for positrons and anti-protons. This is done assuming that the essential m odulation processes between the HP and the Earth for protons\, electrons\, He-isotopes\, H-2\, positrons and anti-protons are essentially similar\, except for particle drifts of oppositely charged particles. These new vLIS ’s will be shown\, discussed and evaluated within the context of the tot al modulation of these GCR particles in the heliosphere over a full solar activity cycle.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/139 / LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/139/ END:VEVENT BEGIN:VEVENT SUMMARY:Atmospheric effects of electron and muon components of cosmic rays : Sensitivity theory approach and data of operational satellite monitoring DTSTART;VALUE=DATE-TIME:20210609T122000Z DTEND;VALUE=DATE-TIME:20210609T123500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-138@indico.nevod.mephi.ru DESCRIPTION:Speakers: Nikolay Volkov (Altai State University)\nThe results of a complex approach to the study of sensitivity of spatial distribution s of electron and muon components of extensive air showers (EAS)\, measure d by scintillation detectors\, to variations in the temperature profile of the atmosphere are presented.\nTo describe the lateral dependence of the spatial distribution function of electrons in electron-photon cascades\, t he method of the adjoint equations and also the variational theory of sens itivity developed by the authors were used. Spatial distributions of elect ron and muon components of EAS\, as well as the corresponding differential temperature coefficients\, were simulated by the Monte Carlo method.\nTo assess the effect of variations in the temperature profile of the atmosphe re on the lateral distribution of particles measured by scintillation dete ctors\, satellite monitoring of main parameters of the system "atmosphere - underlying surface" was carried out in zones of Yakutsk complex EAS arra y and TAIGA observatory.\nAs a result of the studies\, coefficients of dif ferential sensitivity of the spatial distribution of electron and muon EAS components to variations in the temperature profile of the atmosphere wer e obtained for the first time. Corrective functions that relate the energy release in scintillation detectors of various thicknesses with the partic les density above the detector at various distances from the shower axis w ere established.\nBased on the obtained data\, a method for correcting the EAS detectors readings in view of the temperature effect has been develop ed. It is shown that changes in the lateral distribution function of the E AS electromagnetic component due to variations in the atmospheric temperat ure profile in one annual cycle of operation can exceed 10%.\n\nhttps://in dico.nevod.mephi.ru/event/6/contributions/138/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/138/ END:VEVENT BEGIN:VEVENT SUMMARY:Variations of atmospheric muons and background measured with Large Volume Detector DTSTART;VALUE=DATE-TIME:20210609T120500Z DTEND;VALUE=DATE-TIME:20210609T122000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-130@indico.nevod.mephi.ru DESCRIPTION:Speakers: Natalia Agafonova (Institute for Nuclear Research of RAS)\nThe analysis of atmospheric muons detected in the LVD underground l ow-background experiment (Gran Sasso\, Italy) has been completed. The aver age intensity of the registered muons is 3.31 × 10−4 m −2 s −1. The paper presents measurements of seasonal variations of muons in different directions.\nThe low-energy background\, which is registered by the detect or\, also experiences seasonal (annual) changes. This background is create d by gamma quanta from decays of 222Rn daughter nuclei. Gamma radiation is generated mainly by bismuth nuclei\, which\, due to-decay\, transform int o polonium with a characteristic time of 19.7 min. The energy spectrum of gamma radiation covers the range from 0.6 to 2.5 MeV. The detector also ob serves daily and weekly background variations. Variations are due to seaso nal fluctuations in radon concentration and additional injection of radon from groundwater associated with tectonic activity.\nWith deformations of the earth's crust\, stress arises\, the number of microcracks increases\, which leads to an increase in the concentration of radon. At the LVD exper iment\, research is underway to identify the relationship between the beha vior of radon fields and seismic activity. The paper will discuss various sources of variations associated with geophysical aspects (the influence o f the moon's motion\; changes in pressure\, humidity and temperature\; sei smic activity).\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/130 / LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/130/ END:VEVENT BEGIN:VEVENT SUMMARY:Studies of heliospheric modulation of cosmic rays at ShICRA SB RAS and prospects of their further development DTSTART;VALUE=DATE-TIME:20210609T114000Z DTEND;VALUE=DATE-TIME:20210609T120500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-136@indico.nevod.mephi.ru DESCRIPTION:Speakers: Petr Gololobov (Yu.G. Shafer Institute of Cosmophysi cal Research and Aeronomy SB RAS)\nThe ShICRA SB RAS has been conducting t heoretical and experimental studies of cosmic rays and their modulation in the heliosphere for over 60 years. The results of experimental studies of variations in the cosmic ray intensity include the creation of original m ethods for the primary processing of the registration data of neutron moni tors and muon telescopes\, in particular\, the methods of crossed telescop es\, receiving vectors\, and global survey\, which are currently used to s olve various fundamental and applied problems. In 1964\, an analysis of th e data obtained at the Yakutsk spectrograph was used to explain the nature of the observed daily variation in the cosmic ray intensity. A significan t contribution to the theoretical study of cosmic rays was the discovery o f the regular (diffusion) acceleration mechanism in 1977. Based on this me chanism\, a theory of cosmic ray acceleration in the solar corona in linea r and quasilinear versions was developed\, the observation of storm partic les at the interplanetary shock fronts was explained\, and the acceleratio n at the Earth's bow shock was described. Thus\, this mechanism explains t he origin of cosmic rays in the heliosphere in a wide energy range from 10 ^3 to 10^10 eV. Using the global survey method to predict geomagnetic stor ms in real-time\, the Institute maintains continuous ground-based monitori ng of cosmic rays. We study the tensor anisotropy of cosmic rays\, the nor th-south asymmetry of the heliosphere\, and the behavior of the energy spe ctrum of cosmic ray decrease in large-scale disturbances of the solar wind . A great achievement was creating a basic model of heliospheric modulatio n of cosmic rays\, which correctly describes the 11-year variations in the intensity of cosmic rays with energies from tens of MeV to tens of GeV ob served in various experiments.\nIn recent years\, we study cosmic ray decr ease in magnetic clouds. A new mechanism for the Forbush decrease formatio n in magnetic clouds is proposed. The Forbush decrease occurs due to energ y losses of particles in the inductive electric field of a moving cloud an d their quasi-trapping in the helical magnetic field. There are no free pa rameters in this theory\; the calculation results agree with observations. \nThe registration of cosmic rays will be continued on the new Yakutsk spe ctrograph. The analysis of its data will allow us to determine the cosmic ray anisotropy parameters\, isolate the effects of the east-west asymmetry \, and study the energy spectra of Forbush decreases in detail ground-leve l enhancements of solar cosmic rays. In future theoretical studies\, it is planned to consider several topical issues of space physics\, in particul ar\, the injection of solar cosmic rays into the interplanetary space\; th eir composition\; self-consistent acceleration of charged particles\, and generation of MHD turbulence in flare processes\; the effect of coronal ma ss ejections on the space-time distribution of solar and galactic cosmic r ays. As a result\, this will help to understand the physical processes in the heliosphere better and\, therefore\, more accurately predict the space weather in the vicinity of the Earth.\n\nhttps://indico.nevod.mephi.ru/ev ent/6/contributions/136/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/136/ END:VEVENT BEGIN:VEVENT SUMMARY:Solar energetic particles and trapped radiation in the near-Earth ’s Space: space experiments and modelling DTSTART;VALUE=DATE-TIME:20210608T131000Z DTEND;VALUE=DATE-TIME:20210608T133500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-135@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Kalegaev (SINP MSU)\nAmong the factors of s pace weather\, one of the most dangerous phenomena is radiation. Radiation in space exists due to the presence of charged particles of different nat ure and creates problems for the "vitality" of not only the spacecraft\, b ut also of humans. The main radiation threats are solar and galactic cosmi c rays\, fluxes of precipitating magnetospheric particles and trapped part icles of the Earth’s radiation belts. Solar and geomagnetic activity\, w hich determine space weather\, can cause drastic changes in physical condi tions in geospace\, which affect technological systems located both in spa ce and in polar regions on the surface of the Earth. To prevent emergencie s associated with cosmic factors\, it is necessary to constantly monitor t he solar activity and the state of the space environment.\nExperimental st udies and operational monitoring of trapped radiation and cosmic rays have been conducted by MSU’ Institute of Nuclear Physics since the beginning of the space age. The Institute has accumulated extensive experience in c reating instrumentation for measuring ionizing radiation from spacecraft. On the basis of the experiments carried out\, modern models of the space e nvironment have been created\, on the basis of which several national and international standards have been developed. Satellite measurement data an d models of the space environment are the basis for continuous monitoring of radiation conditions in space. Space Monitoring Data Center has been es tablished at SINP MSU for analysis and forecasting of the space environmen t radiation state.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/ 135/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/135/ END:VEVENT BEGIN:VEVENT SUMMARY:Diagnostics of electromagnetic conditions in the heliosphere on ef fects in cosmic rays DTSTART;VALUE=DATE-TIME:20210608T140000Z DTEND;VALUE=DATE-TIME:20210608T142500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-134@indico.nevod.mephi.ru DESCRIPTION:Speakers: Valeriy Sdobnov ()\nA review is given of some result s of diagnostics of the electromagnetic characteristics of the heliosphere and Earth's magnetosphere within the framework of the model of modulation of cosmic rays by large-scale electromagnetic fields of the heliosphere\, obtained by the method of spectrographic global survey from ground-based observations of cosmic rays on the world network of stations.\n\nhttps://i ndico.nevod.mephi.ru/event/6/contributions/134/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/134/ END:VEVENT BEGIN:VEVENT SUMMARY:Geophysical aspect of the cosmic ray studies at the Tien Shan moun tain station: monitoring of radiation background\, investigation of atmosp heric electricity phenomena in thunderclouds and the search for earthquake precursor effects. DTSTART;VALUE=DATE-TIME:20210608T124500Z DTEND;VALUE=DATE-TIME:20210608T131000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-133@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Ryabov (LPI RAS)\nThe detector complex of t he Tien Shan mountain station provides a mean for studies in the different ranges of experimental geophysics. The particles detectors of the station can be used for monitoring of the various types of radiation background. The system of high- altitude detectors permit to register the flow of part icles accelerated by atmospheric electric field in thunderclouds\, while c ombination of diverse radiation receivers can be used for detection of lig htning emission simultaneously in different frequency ranges of electromag netic spectrum. For effectiveness illustration of the Tien Shan experiment al complex `Thunderstorm` a sample of unique data is presented here which were obtained in vicinity to the region of lightning development in thunde rclouds\, such as the temporal distributions and energy spectra of acceler ated up to (1-100) MeV electrons\, of the (30-3000) MeV gamma rays\, of th e optic and radio emission bursts. Another direction of geophysical studie s at Tien Shan anticipates using of the neutron\, muon\, gamma\, and elect romagnetic detectors for investigation of the various effects of seismic o rigin\, and for search for supposed correlation between such signals and i nteraction of the cosmic ray particles with the matter of the earth's crus t. Perspectives of such investigation are discussed here for the seismolog ical forecast problem and earthquake prediction in the surrounding region of the Tien Shan station.\n\nhttps://indico.nevod.mephi.ru/event/6/contrib utions/133/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/133/ END:VEVENT BEGIN:VEVENT SUMMARY:Large scale modulation: view from the earth points DTSTART;VALUE=DATE-TIME:20210608T122000Z DTEND;VALUE=DATE-TIME:20210608T124500Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-132@indico.nevod.mephi.ru DESCRIPTION:Speakers: Victor Yanke (IZMIRAN)\nhe current knowledge and ide as\, obtained from groundlevel observations and concerning the solar modul ation of cosmic rays\, are reviewed. The following topics are discussed: \ nobservations of the cosmic ray modulation at the Earth and main character istics of the accumulated experimental data\; manifestations of the solar magnetic cycle in cosmic rays\; the effect of hysteresis and its relation to size of the heliosphere\; the rigidity spectrum of long-term cosmic ray variations and its comparison with direct measurements on spacecraft\; ca libration of ground-based monitoring data using direct measurements on spa cecraft in comparable energy ranges\; the place of ground level observatio ns in current studies of cosmic ray modulation and their future prospects. \nParticular consideration is given to the correlation of long-term cosmi c ray variations with different solar-heliospheric parameters\, and to emp irical models of cosmic ray modulation.\n\nhttps://indico.nevod.mephi.ru/e vent/6/contributions/132/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/132/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of cosmic ray modulation effects by the regular soun ding of charged particle fluxes in the atmosphere and on the ground DTSTART;VALUE=DATE-TIME:20210608T115500Z DTEND;VALUE=DATE-TIME:20210608T122000Z DTSTAMP;VALUE=DATE-TIME:20260614T103250Z UID:indico-contribution-23-131@indico.nevod.mephi.ru DESCRIPTION:Speakers: Vladimir Makhmutov (LPI RAS)\nFor the period from 19 57 to present time the results of observations of charged particle fluxes in the atmosphere of the northern and southern polar latitudes and the mid dle nothern one at the altitudes from the ground level up to 30-35 km are presented. The questions of the long-term modulation effecrts and its rela tionships with solar activity are discussed.\nCosmic rays are the main ion ization source in the Earth’s atmosphere. The role of charged particles in the atmospheric electrical phenomena is considered such as cloud and th undercloud formation\, ligthning production and the role of charged partic les in climate change. Some results of the international experiment CLOUD in CERN are given.\n\nhttps://indico.nevod.mephi.ru/event/6/contributions/ 131/ LOCATION:Online Zoom URL:https://indico.nevod.mephi.ru/event/6/contributions/131/ END:VEVENT END:VCALENDAR