Temperature variations in the dayside magnetosheath and their dependence on ion-scale magnetic structures

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Dimmock, A. P.
dc.contributor.author Osmane, A.
dc.contributor.author Pulkkinen, T. I.
dc.contributor.author Nykyri, K.
dc.contributor.author Kilpua, E.K.J.
dc.date.accessioned 2018-08-01T12:42:07Z
dc.date.available 2018-08-01T12:42:07Z
dc.date.issued 2017-06-01
dc.identifier.citation Dimmock , A P , Osmane , A , Pulkkinen , T I , Nykyri , K & Kilpua , E K J 2017 , ' Temperature variations in the dayside magnetosheath and their dependence on ion-scale magnetic structures : THEMIS statistics and measurements by MMS ' JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS , vol 122 , no. 6 , pp. 6165-6184 . DOI: 10.1002/2016JA023729 en
dc.identifier.issn 2169-9380
dc.identifier.issn 2169-9402
dc.identifier.other PURE UUID: 50d14964-c4a0-4637-b331-398376a28226
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/temperature-variations-in-the-dayside-magnetosheath-and-their-dependence-on-ionscale-magnetic-structures(50d14964-c4a0-4637-b331-398376a28226).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85020734207&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/26688700/Dimmock_et_al_2017_Journal_of_Geophysical_Research_3A_Space_Physics.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/32756
dc.description.abstract The magnetosheath contains an array of waves, instabilities, and nonlinear magnetic structures which modify global plasma properties by means of various wave-particle interactions. The present work demonstrates that ion-scale magnetic field structures (∼0.2–0.5 Hz) observed in the dayside magnetosheath are statistically correlated to ion temperature changes on orders 10–20% of the background value. In addition, our statistical analysis implies that larger temperature changes are in equipartition to larger amplitude magnetic structures. This effect was more pronounced behind the quasi-parallel bow shock and during faster solar wind speeds. The study of two separate intervals suggests that this effect can result from both local and external drivers. This manuscript presents two separate case studies, one from using THEMIS (Time History of Events and Macroscale Interactions during Substorms) data and another from Magnetospheric Multiscale; these measurements are then supported by extensive THEMIS statistical observations. These results could partly explain the 10–20% dawn-favored asymmetry of the magnetosheath ion temperature seed population and contribute to the dawn-favored asymmetry of cold component ions in the cold dense plasma sheet. en
dc.format.extent 20
dc.format.extent 6165-6184
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries JOURNAL OF GEOPHYSICAL RESEARCH: SPACE PHYSICS en
dc.relation.ispartofseries Volume 122, issue 6 en
dc.rights openAccess en
dc.subject.other Geophysics en
dc.subject.other Oceanography en
dc.subject.other Forestry en
dc.subject.other Ecology en
dc.subject.other Aquatic Science en
dc.subject.other Water Science and Technology en
dc.subject.other Soil Science en
dc.subject.other Geochemistry and Petrology en
dc.subject.other Earth-Surface Processes en
dc.subject.other Atmospheric Science en
dc.subject.other Earth and Planetary Sciences (miscellaneous) en
dc.subject.other Space and Planetary Science en
dc.subject.other Palaeontology en
dc.subject.other 1171 Geosciences en
dc.title Temperature variations in the dayside magnetosheath and their dependence on ion-scale magnetic structures en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Electronics and Nanoengineering
dc.contributor.department Department of Radio Science and Engineering
dc.contributor.department University of Helsinki
dc.subject.keyword dawn-dusk asymmetry
dc.subject.keyword ion heating
dc.subject.keyword magnetosheath
dc.subject.keyword nonadiabatic heating
dc.subject.keyword wave-particle interaction
dc.subject.keyword Geophysics
dc.subject.keyword Oceanography
dc.subject.keyword Forestry
dc.subject.keyword Ecology
dc.subject.keyword Aquatic Science
dc.subject.keyword Water Science and Technology
dc.subject.keyword Soil Science
dc.subject.keyword Geochemistry and Petrology
dc.subject.keyword Earth-Surface Processes
dc.subject.keyword Atmospheric Science
dc.subject.keyword Earth and Planetary Sciences (miscellaneous)
dc.subject.keyword Space and Planetary Science
dc.subject.keyword Palaeontology
dc.subject.keyword 1171 Geosciences
dc.identifier.urn URN:NBN:fi:aalto-201808014156
dc.identifier.doi 10.1002/2016JA023729
dc.type.version publishedVersion


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