极地研究

极地研究 ›› 2009, Vol. 21 ›› Issue (1): 48-59.

• 研究论文 • 上一篇    下一篇

用雷达电磁波探测研究南极冰盖浅层散射特征:以中山站至Dome A冰盖断面为例

蒋芸芸, 孙波, 柯长青, 崔祥斌, 唐学远, 郭井学, 张向培   

  1. 南京大学地理与海洋科学学院; 中国极地研究中心;
  • 出版日期:2009-03-30 发布日期:2009-03-30
  • 基金资助:

    国际极地年中国行动计划“中山站至冰穹A冰盖结构与动力学过程研究”;; 国家科技支撑项目(2006BAB18B03);; 863项目(2006AA09Z152);; 国家自然科学基金(40476005)资助

SCATTERING FEATURES ANALYSES OF THE SHALLOW ANTARCTIC ICE SHEET BASED ON ICE-PENETRATING RADAR METHOD:A CASE-STUDY ALONG THE ZHONGSHAN STATION-DOME A TRANSECT

JIANG Yun-Yun, SUN Bei, KE Chang-Jing, CUI Xiang-Bin, TANG Hua-Yuan, GUO Jing-Hua, ZHANG Xiang-Pei   

  1. 1 School of Geographic and Oceanographic Sciences of Nanjing University; Nanjing 210093; China; 2 Polar Research Institute of China; Shanghai 200136; China
  • Online:2009-03-30 Published:2009-03-30

PDF (PC)

1750

被引次数

12

摘要：

本研究运用双频雷达(60MHz和179MHz)获取的南极中山站—Dome A断面的雷达回波探测数据,对冰盖浅部100—700m的雷达内部反射层和接收功率变化定量计算分析表明,60MHz的雷达回波能量比179MHz衰减得更快;中山站—Dome A断面冰盖浅层700m以上的雷达反射层形成的主导原因是冰密度的变化;断面上不同测站点间同一深度的接收功率差值达到10dB,表明冰盖浅层散射存在显著差异。

关键词: 冰雷达, 中山站—Dome A断面, 东南极, 冰盖浅部, 散射, 冰雷达, 中山站&mdash, Dome A断面, 东南极, 冰盖浅部, 散射

Abstract:

Radio-echo detecting ice sheet is one of the most significant progresses in Antarctic ice sheet researches in recent 20 years. Ice-penetrating radar is a convenient and significant method to image and analyze the properties of Antarctic ice sheet internal structure. This research used the two-frequency (60 MHz and 179 MHz) radar to detect the radar internal reflection strata. The variations of the received power within 100—700 m of the ice sheet surface along the Zhongshan-Dome A transect showed that: the r...

Key words: ice-penetrating radar, Zhongshan-Dome A transect, shallow ice sheet, scattering, East Antarctica