Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23–24
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DOI[10.1186/s40623-021-01481-6]のデータに遷移します
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- 資料種別
- 記事
- 著者・編者
- Manjula RanasingheAkiko FujimotoAkimasa Yoshikawa
- 出版年月日等
- 2021-07-21
- 出版年（W3CDTF）
- 2021-07-21
- タイトル（掲載誌）
- EPS : Earth, Planets and Space
- 巻号年月日等（掲載誌）
- 73(146)
- 掲載巻
- 73(146)
- ISSN（掲載誌）
- 1880-5981
- ISSN-L（掲載誌）
- 1343-8832
- 本文の言語コード
- eng
- DOI
- 10.1186/s40623-021-01481-6
- 国立国会図書館永続的識別子
- info:ndljp/pid/11740904
- コレクション（共通）
- コレクション（障害者向け資料：レベル1）
- コレクション（個別）
- 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他
- 収集根拠
- オンライン資料収集制度
- 受理日（W3CDTF）
- 2021-10-05T00:13:24+09:00
- 保存日（W3CDTF）
- 2021-10-01
- 記録形式（IMT）
- application/pdf
- オンライン閲覧公開範囲
- 国立国会図書館内限定公開
- デジタル化資料送信
- 図書館・個人送信対象外
- 遠隔複写可否（NDL）
- 可
- 掲載誌（国立国会図書館永続的識別子）
- info:ndljp/pid/11667897
- 連携機関・データベース
- 国立国会図書館 : 国立国会図書館デジタルコレクション
- 要約等
- The east–west component of magnetic field variation (∆D-component) at Davao station (Philippines, geomagnetic latitude: – 2.22˚N) are used to investigate the characteristics of the long-term Inter-Hemispheric Field-Aligned Currents (IHFACs) based on the time-series analysis from August 1998 to July 2020. Recent in situ satellite and ground-based observations have reported that dusk-side current polarity of IHFAC is often opposite to that of the noon IHFAC, being inconsistent with Fukushima's IHFACs model. We investigated the consistency of the dusk-side IHFAC polarity derived from the observations with the polarity expected from Fukushima’s IHFACs model and examined the solar cycle dependence of IHFACs. It was confirmed that the dusk-side IHFACs during June and December solstices flow in the same direction of the noontime IHFACs, which was consistent with the IHFAC polarities suggested by the Fukushima model. The dusk-side IHFACs around March and September–November months disagreed with the Fukushima model. The ∆D variations clearly showed seasonal asymmetry in the dawn and noon sectors, whereas the ∆D variations in the dusk sector demonstrated seasonal symmetry. Solar cycle dependence of IHFACs was exhibited in the dusk sector. For the dawn and noon sectors, the yearly peak-to-peak ∆D amplitude in the later solar cycle SC24 decreased by about 35% in comparison with the earlier solar cycle SC23. In contrast, the dusk-side yearly peak-to-peak ∆D amplitude increased by about 200%. The dusk-side IHFAC yearly amplitude tended to be in inverse proportion to solar activity.Journal Article
- DOI
- 10.1186/s40623-021-01481-6
- 著作権情報
- Copyright (c) The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- 関連情報（URI）
- 参照
- An empirical model of the quiet daily geomagnetic field variationCharacteristics of Seasonal Variation and Solar Activity Dependence of the Geomagnetic Solar Quiet Daily VariationClimatology of the inter-hemispheric field-aligned currents system over the Nigeria ionosphereSolstitial S-currents through the magnetosphereFeatures of the inter-hemispheric field-aligned current system over Malaysia ionosphereAverage Characteristics of Low‐Latitude Interhemispheric and <i>F</i> Region Dynamo Currents Deduced From the Swarm Satellite ConstellationEffects of seasonal changes in the ionospheric conductances on magnetospheric field‐aligned currentsField-aligned current induced by asymmetric dynamo action in the ionosphereField‐aligned current response to solar indicesNorth-South asymmetry of sMid and low-latitudinal ionospheric field-aligned currents derived from the Swarm satellite constellation and their variations with local time, longitude, and seasonMid-latitude solar eclipses and their influence on ionospheric current systemsExcursions of Interhemispheric Field‐Aligned Currents in AfricaSeasonal and local time dependences of the interhemispheric field‐aligned currents deduced from the Ørsted satellite and the ground geomagnetic observationsGeomagnetic field variation and the equivalent current system generated by an ionospheric dynamo at the solsticeSeasonal and interplanetary magnetic field dependence of the field-aligned currents for both Northern and Southern HemispheresThree dimensional ionospheric currents and field aligned currents generated by asymmetrical dynamo action in the ionosphereClimatology of the inter-hemispheric field-aligned current system in the equatorial ionosphere as observed by CHAMPSeasonal variations of high‐latitude field‐aligned currents inferred from Ørsted and Magsat observationsIonospheric <i>F</i> region currents at middle and low latitudes estimated from Magsat dataSq and EEJ—A Review on the Daily Variation of the Geomagnetic Field Caused by Ionospheric Dynamo CurrentsThe ionospheric dynamo and equatorial magnetic variationsThe interhemispheric and <i>F</i> region dynamo currents revisited with the Swarm constellationInterplanetary conditions causing intense geomagnetic storms (Dst ≤ −100 nT) during solar cycle 23 (1996–2006)Field-aligned currents driven by the ionospheric dynamoThe computation of magnetospheric currents, caused by dynamo action in the ionosphereDifferences between CME‐driven storms and CIR‐driven stormsSome topics and historical episodes in geomagnetism and aeronomyWEAKEST SOLAR WIND OF THE SPACE AGE AND THE CURRENT “MINI” SOLAR MAXIMUMLatitude Dependence of Interhemispheric Field‐Aligned Currents (IHFACs) as Observed by the Swarm ConstellationSolar wind spatial scales in and comparisons of hourly Wind and ACE plasma and magnetic field dataEquatorial electrojet and regular daily variation S—I. A determination of the equatorial electrojet parametersSolar and geomagnetic disturbances during the declining phase of recent solar cyclesSources of geomagnetic storms for solar minimum and maximum conditions during 1972–2000Magnetospheric currents, associated with the N-S asymmetry of SThe STEP 210° magnetic meridian network projectCharacteristics of Pi 2 magnetic pulsations observed at the CPMN stations: A review of the STEP resultsElectric potential difference between conjugate points in middle latitudes caused in the ionosphereGeomagnetic Dst IndexDiagnosing low-/mid-latitude ionospheric currents using platform magnetometers : CryoSat-2 and GRACE-FO
- 連携機関・データベース
- 国立情報学研究所 : CiNii Research
- 提供元機関・データベース
- 学術機関リポジトリデータベース雑誌記事索引データベースCrossref科学研究費助成事業データベースCrossref
- 書誌ID（NDLBibID）
- 11740904