极地研究

极地研究 ›› 2016, Vol. 28 ›› Issue (2): 277-286.DOI: 10.13679/j.jdyj.2016.2.277

• 研究论文 • 上一篇    下一篇

利用冰雷达诊断南极冰盖底部环境的研究综述

杨树瑚1,顾祈明1,张云1,崔祥斌2,唐学远2   

  1. 1. 上海海洋大学信息学院，上海 201306，2. 中国极地研究中心，上海 200136
  • 收稿日期:2015-01-20 修回日期:2015-05-12 出版日期:2016-06-30 发布日期:2016-06-30
  • 通讯作者: 杨树瑚
  • 基金资助:
    上海高校特聘教授 (东方学者)岗位计划;上海科学技术发展基金;国家自然科学基金,南北极环境综合考察与评估专项资助项目;国家自然科学基金,南北极环境综合考察与评估专项资助项目;国家自然科学基金青年科学基金项目;上海海洋大学博士启动基金

A review of the use of ice penetrating radar to diagnose the subglacial environnments

Yang Shuhu，Gu Qiming，Zhang Yun，Cui Xiangbin，Tang Xueyuan   

  • Received:2015-01-20 Revised:2015-05-12 Online:2016-06-30 Published:2016-06-30

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摘要： 现今南极冰盖底部的环境对冰盖的动力演化有着重要的影响, 准确的冰盖底部环境信息有利于更加准确地模拟南极冰盖的起源、发展以及未来的演化。采用无线电回波技术, 可有效地对冰盖进行探测。通过定量地处理雷达波在冰盖内部的介电衰减, 可以获取冰盖底部的反射率, 从而对冰盖底部环境, 特别是冰下水文环境进行诊断。综述了雷达波在冰盖内部衰减处理的三种方法, 分析了它们的适用性及局限性, 并对这些方法应用于诊断冰盖底部的环境以及方法本身可能的改进进行了讨论。

关键词: 南极冰盖, 冰下环境, 冰雷达, 电磁波衰减

Abstract: The subglacial environment in Antarctica has important effects on the evolution of the Antarctic ice sheet. Accurate information on the subglacial environment information will therefore enable more accurate simulation of the evolution of the ice sheet. Currently, radio echo sounding is the most effective technique available to investigate the development of ice sheet. The subglacial environment, in particular the hydrological environment, can be monitored based on bed reflectivity, which is measured by quantitative analysis of the dielectric attenuation of radar waves in the ice sheet. Three methods used to process radar wave attenuation in the ice sheet are reviewed, the applicability and limitations of these methods are analyzed, the subglacial environment is determined using each method, and potential improvements are discussed.

Key words: Antarctic ice sheet, subglacial environment, ice radar, radio attenuation