中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/5110
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 80990/80990 (100%)
造訪人次 : 42735646      線上人數 : 1406
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋


    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/5110


    題名: 中華衛星一號觀測電離層電漿氣泡密度變化之統計及研究
    作者: 何旭慧;Xu-Huan He
    貢獻者: 太空科學研究所
    關鍵詞: 中華衛星一號;電離層電漿電動效應酬載儀;bubbles;IPEI
    日期: 2001-06-29
    上傳時間: 2009-09-22 09:45:15 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 利用中華衛星一號上之電離層電漿電動效應酬載儀(IPEI)所量測到高解析度的密度資料,統計分析bubbles的發生機率隨季節、地理位置及地磁擾動的變化情形。當地磁擾動小時,在傍晚20點為bubbles發生的最佳時機,而在地磁擾動大時,午夜之後較容易有bubbles的發生。由2000年一整年的資料看出bubbles最容易在地理經度0度附近發生,而夏天時在太平洋地區(地理經度120度到150度)、冬天時在南美洲(地理經度-60度到-30度,偏向南半球)最容易產生bubbles。此外,地磁擾動小的狀況下,在當地時間18點到20點,不同尺度的波譜指數會隨著時間改變。而在地磁擾動大的狀況下,波譜指數在當地時間凌晨3點到6點有明顯的變化。 Gathered during the year 2000 from the ion trop sensor on the ROCSAT-1, a satellite in a circular orbit at the height of 600km, the high resolution ion density data in the equatorial spread F (ESF) events are analyzed in the thesis. The occurrence distributions of the plasma bubbles with seasons, locations, and magnetic activities have been obtained. During quite times, the ESF events are most likely to occur around 2000 LT. With the increase in magnetic activity, the plasma bubbles appear frequently from midnight to sunrise. The probability of the plasma bubbles occurrence is always high near 0 longitude all year long. The seasonal occurrence is such that it is high in the pacific regions (between 120 and 150 longitude) during northern summer and in the south of America (between -60 - -30 longitude) during northern winter. The result of the spectra analysis for the ESF events, indicate that the spectral index in three scales ranges changes as function as local time during 1800-2000 LT under the condition Kp 3+, and during 0300-0600 LT in the strong geomagnetic activities (Kp 4-).
    顯示於類別:[太空科學研究所 ] 博碩士論文

    文件中的檔案:

    檔案 大小格式瀏覽次數


    在NCUIR中所有的資料項目都受到原著作權保護.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明