极地研究 ›› 2017, Vol. 29 ›› Issue (4): 446-453.DOI: 10.13679/j.jdyj.2017.4.446

• 研究论文 • 上一篇    下一篇

基于多源遥感数据的中山站附近地区冰架和冰川变化监测

刘芮希  周春霞  梁琦   

  1. 1. 武汉大学, 中国南极测绘研究中心, 湖北 武汉 430079;
    2. 极地测绘科学国家测绘地理信息局重点实验室, 湖北 武汉 430079
  • 收稿日期:2016-05-16 修回日期:2016-09-26 出版日期:2017-12-30 发布日期:2017-12-30
  • 通讯作者: 周春霞
  • 基金资助:

    国家自然科学基金(41531069,41376187,41776200)和南北极环境综合考察与评估专项(CHINARE2016-02-04)资助

Monitoring the changes of ice shelf and glaciers around Zhongshan Station using multiple-source remote sensing data

Liu Ruixi, Zhou Chunxia, Liang Qi   

  • Received:2016-05-16 Revised:2016-09-26 Online:2017-12-30 Published:2017-12-30

摘要:

南极冰架和冰川的变化是全南极动态变化的主要过程之一。利用MODIS L1B级250 m分辨率数据和Landsat 陆地卫星15 m分辨率数据, 针对不同尺度试验区域, 分别监测2000—2016年间中山站附近地区的埃默里冰架、极时代冰川、极记录冰川和达尔克冰川的动态变化过程, 并对试验区的动态变化进行分析。结果表明, 埃默里冰架在近16年间一直处于向外扩展状态, 前缘年扩展速率和扩展面积量较为稳定; 极时代和极记录冰川不断向海洋流动, 极时代冰川于2007年发生大型崩解, 而极记录冰川前端的冰山在2014年发生崩解, 冰山面积逐年递减, 于2016年完全漂离冰川前缘; 达尔克冰川则在监测年份内呈现出了交替性扩展和崩解的变化规律。

关键词: 冰架, 冰川, 中山站, MODIS, Landsat, 变化监测

Abstract:

The changes of ice shelves and glaciers are major processes for dynamic changes in Antarctica. MODIS L1B 250 m resolution data and Landsat 15 m resolution panchromatic data are used to investigate dynamic changes in the Amery Ice Shelf, Polar Times Glacier, Polar Record Glacier and Dalk Glacier from 2000 to 2016. The changes in area and annual rate of change are analyzed. The results show that the Amery Ice Shelf has grown in extent over the past 16 years and that its front has advanced at a steady rate. The Polar Times Glacier and Polar Record Glacier continued to advance during those years, and an iceberg calved from the Polar Times Glacier in 2007. The area of icebergs in front of the Polar Record Glacier has decreased annually since a calving event in 2014. The Dalk Glacier has alternated between advancing and calving.

Key words: ice shelf, glacier, Zhongshan Station, MODIS, Landsat, change monitoring