Mid-latitude Geomagnetic Indices ASY and SYM (ASY/SYM Indices)

• Material Type: 文書・図像類
• Title: Mid-latitude Geomagnetic Indices ASY and SYM (ASY/SYM Indices)
• Author/Editor: World Data Center for Geomagnetism, Kyoto; Imajo, Shun; Matsuoka, Ayako; Toh, Hiroaki; Iyemori, Toshihiko
• Author Heading: World Data Center for Geomagnetism, Kyoto; Imajo, Shun; Matsuoka, Ayako; Toh, Hiroaki; Iyemori, Toshihiko
• Publication, Distribution, etc.: World Data Center for Geomagnetism, Kyoto
• Publication Date: 1981-01-01 00:00:00 - present; 2022-01-07
• Publication Date (W3CDTF): 2022-01-07
• Contributor: U.S. Geological Survey; Hermanus Magnetic Observatory; Chambon-la-Foret Magnetic Observatory; Institut de Physique du Globe de Strasbourg; Kakioka Magnetic Observatory; Indian Institute of Geomagnetism; Institute of Ionosphere, Republic Kazakhstan (IIRK); Geophysical Institute, China Seismological Bureau
• Text Language Code: eng
• Area Coverage: San Juan; Fredericksburg; Boulder; Tucson; Honolulu; Memambetsu; Urumqi; Alibag; Martin de Vivies; Hermanus; Chambon-la-Foret; Alma-Ata
• Subject Heading: geomagnetic activity index
• Target Audience: 一般
• Note (General): 【Update frequency】; Indices of the previous month are added once a month.; 【Observatory Location】; [San Juan]; geographic latitude: 18.110; geographic longitude: 293.850; [Fredericksburg]; geographic latitude: 38.200; geographic longitude: 282.630; [Boulder]; geographic latitude: 40.130; geographic longitude: 254.760; [Tucson]; geographic latitude: 32.170; geographic longitude: 249.270; [Honolulu]; geographic latitude: 21.320; geographic longitude: 202.000; [Memambetsu]; geographic latitude: 43.910; geographic longitude: 144.189; [Urumqi]; geographic latitude: 43.800; geographic longitude: 87.700; [Alibag]; geographic latitude: 18.638; geographic longitude: 72.872; [Martin de Vivies]; geographic latitude: -37.796; geographic longitude: 77.574; [Hermanus]; geographic latitude: -34.425; geographic longitude: 19.225; [Chambon-la-Foret]; geographic latitude: 48.025; geographic longitude: 2.261; [Alma-Ata]; geographic latitude: 43.250; geographic longitude: 76.920; 【Citation】; World Data Center for Geomagnetism, Kyoto, S. Imajo, A. Matsuoka, H. Toh, and T. Iyemori (2022), Mid-latitude Geomagnetic Indices ASY and SYM (ASY/SYM Indices), doi:10.14989/267216.; 【Contact person】; Shun Imajo (orcid:0000-0002-9862-844X), Ayako Matsuoka (orcid:0000-0001-5777-9711)
• DOI: 10.14989/267216
• Rights (production): The DOI of ASY/SYM data used in the paper must be identified in the Data Availability Statement or Reference section, in accordance with the guidelines and/or recommended practices of the journal.
• Related Material (DOI): 10.5636/jgg.42.1249
• Content Temporal Coverage: 1981-01-01 00:00:00 - present
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 京都大学 : 京都大学学術情報リポジトリ

• Summary, etc.: The ASY/SYM index was developed by Iyemori [1990] to describe the longitudinally asymmetric and symmetric geomagnetic disturbance fields in middle-lat...