Evidence for a high-latitude origin of lower latitude high-speed wind

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dc.contributor.authorRoberts, D. Aaron
dc.contributor.authorGoldstein, Melvyn
dc.date.accessioned2023-11-07T21:53:12Z
dc.date.available2023-11-07T21:53:12Z
dc.date.issued1998-03-01
dc.description.abstractUsing low-frequency spectra of the wind speed, density, and magnetic field strength, we show that the near-streamer belt solar wind at solar minimum exhibits many harmonics of fundamental frequencies corresponding to 26- and 34-day periods. Nearly all the low-frequency peaks in the spectra can be explained by these harmonics. The 26-day period is that of coronal hole rotation, and the 34-day period is naturally associated with the photospheric rotation period at about 70° S latitude. Thus we find evidence that the wind flow near 25° S comes from a region poleward of 60° S, consistent with magnetic field models.en
dc.description.sponsorshipWe are grateful to the SWOOPS team (J. Phillips, and now D. McComas, P.I.) and the VHM/FGM team (A. Balogh, P.I.) for providing Ulysses plasma and magnetic field data, and in particular to B. Goldstein for his assistance with the data and other helpful discussions. We thank L. Burlaga, K. Ogilvie, L. Lanzerotti, D. Thomson, M. Neugebauer, and C. Maclennan for useful discussions and correspondence. This work was supported in part by a NASA Space Physics Theory Program and other NASA Research and Analysis grants to the Goddard Space Flight Center.en
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/98GL00332en
dc.format.extent4 pagesen
dc.genrejournal articlesen
dc.identifierdoi:10.13016/m2wbjx-yfu6
dc.identifier.citationRoberts, D. Aaron, and M. L. Goldstein. “Evidence for a High-Latitude Origin of Lower Latitude High-Speed Wind.” Geophysical Research Letters 25, no. 5 (1998): 595–98. https://doi.org/10.1029/98GL00332.en
dc.identifier.urihttps://doi.org/10.1029/98GL00332
dc.identifier.urihttp://hdl.handle.net/11603/30586
dc.language.isoenen
dc.publisherAGUen
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Goddard Planetary Heliophysics Institute (GPHI)
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleEvidence for a high-latitude origin of lower latitude high-speed winden
dc.typeTexten
dcterms.creatorhttps://orcid.org/0000-0002-5317-988Xen

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