Anisotropic Forbush decrease of 24 March 2024: First look

dc.contributor.authorMishev A.
dc.contributor.authorLarsen N.
dc.contributor.authorAsvestari E.
dc.contributor.authorSáiz A.
dc.contributor.authorAnn Shea M.
dc.contributor.authorStrauss D.T.
dc.contributor.authorRuffolo D.
dc.contributor.authorBanglieng C.
dc.contributor.authorSeunarine S.
dc.contributor.authorDuldig M.L.
dc.contributor.authorGil A.
dc.contributor.authorBlanco J.J.
dc.contributor.authorGarcía-Población O.
dc.contributor.authorCervino-Solana P.
dc.contributor.authorAdams, J.H.
dc.contributor.authorUsoskin I.
dc.contributor.correspondenceMishev A.
dc.contributor.otherMahidol University
dc.date.accessioned2024-08-29T18:15:43Z
dc.date.available2024-08-29T18:15:43Z
dc.date.issued2024-01-01
dc.description.abstractA strong Forbush decrease, i.e., suppression of the flux of galactic cosmic rays recorded on Earth, was observed by the global network of ground-based neutron monitors (NMs) on 24 – 25 March 2024. The decrease was very unusual as characterised by so rapid recovery that a false Ground-level enhancement (GLE) alarm was produced by the corresponding warning systems. Here we present the first comprehensive collection and analysis of the available data for this event. The event was highly anisotropic as exhibited in a 3-h spread of the deep-phase timing for different NMs. The anisotropy was focused nearly at the anti-sunward direction with a narrow cone of 20 – 30°. The heliospheric situation leading to this unusual Forbush decrease was quite complex. An analysis of first look records was performed, considering the stations acceptance, taking into account the complex geomagnetic conditions. A leader fraction analysis indicates that the recovery phase of the event was rigidity-independent and had essentially the same spectral shape as the pre-event period. A summary of the solar-terrestrial phenomena is provided to assist in future work on modelling this complex event.
dc.identifier.citationAdvances in Space Research (2024)
dc.identifier.doi10.1016/j.asr.2024.08.027
dc.identifier.eissn18791948
dc.identifier.issn02731177
dc.identifier.scopus2-s2.0-85201687356
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/123456789/100634
dc.rights.holderSCOPUS
dc.subjectEarth and Planetary Sciences
dc.subjectPhysics and Astronomy
dc.subjectEngineering
dc.titleAnisotropic Forbush decrease of 24 March 2024: First look
dc.typeArticle
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85201687356&origin=inward
oaire.citation.titleAdvances in Space Research
oairecerif.author.affiliationCenter for Space Plasma and Aeronomic Research
oairecerif.author.affiliationUniversity of Wisconsin-River Falls
oairecerif.author.affiliationRajamangala University of Technology Thanyaburi (RMUTT)
oairecerif.author.affiliationNorth-West University
oairecerif.author.affiliationUniversidad de Alcalá
oairecerif.author.affiliationUniversity of Tasmania
oairecerif.author.affiliationSodankylä Geophysical Observatory
oairecerif.author.affiliationOulun Yliopisto
oairecerif.author.affiliationMahidol University
oairecerif.author.affiliationHelsingin Yliopisto
oairecerif.author.affiliationSiedlce University of Natural Sciences and Humanities
oairecerif.author.affiliation100

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