eprintid: 153166 rev_number: 47 eprint_status: archive userid: 608 dir: disk0/00/15/31/66 datestamp: 2010-10-29 17:52:08 lastmod: 2021-10-08 21:56:50 status_changed: 2012-08-01 13:28:15 type: article metadata_visibility: show item_issues_count: 0 creators_name: Horbury, T creators_name: Burgess, D creators_name: Fraenz, M creators_name: OWEN, CJ title: Three spacecraft observations of solar wind discontinuities ispublished: pub divisions: UCL divisions: B04 divisions: C06 divisions: F63 keywords: Discontinuity, Observation, Wind note: Copyright 2001 by the American Geophysical Union abstract: Observations of solar wind magnetic field discontinuities using 3 spacecraft allow their orientations to be estimated. During 5 days when Geotail, Wind and IMP 8 were between 6 × 104 and 4 × 105 km apart, 35 events identified using the Tsurutani‐Smith method were detected in all 3 magnetic field data sets. Normals estimated from inter‐spacecraft timings showed that very few were unambiguous rotational discontinuities, with 77% likely to be tangential, with < 20% of the magnetic field at the discontinuity threading the normal plane. However, previous single spacecraft studies using minimum variance suggest that most discontinuities are rotational. Minimum variance analysis resulted in many normal estimates lying far from the timing‐derived normals. While some of this discrepancy is likely to be due to random errors in minimum variance vectors, there appears to be a class of events with small field magnitude changes where the minimum variance directions and discontinuity normals are approximately perpendicular, probably due to surface waves on the discontinuities. date: 2001-02-15 publisher: American Geophysical Union official_url: http://dx.doi.org/10.1029/2000GL000121 vfaculties: VMPS oa_status: green language: eng primo: open primo_central: open_green article_type_text: Article verified: verified_manual elements_source: Manually entered elements_id: 18393 doi: 10.1029/2000GL000121 lyricists_name: Owen, Christopher lyricists_id: CJOWE13 full_text_status: public publication: Geophysical Research Letters volume: 28 number: 4 pagerange: 677 - 680 issn: 0094-8276 citation: Horbury, T; Burgess, D; Fraenz, M; OWEN, CJ; (2001) Three spacecraft observations of solar wind discontinuities. Geophysical Research Letters , 28 (4) 677 - 680. 10.1029/2000GL000121 <https://doi.org/10.1029/2000GL000121>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/153166/1/2000GL000121.pdf