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地球科学进展  2016, Vol. 31 Issue (2): 206-212    DOI: 10.11867/j.issn.1001-8166.2016.02.0206
全球变化研究     
基于多源遥感数据的南极三大冰架前端变化分析
吴晨曦1,2,刘世杰1,2*,田一翔1,2, 童小华1,2
1.同济大学 测绘与地理信息学院,上海 200092;
2.同济大学 空间信息科学及可持续发展应用中心,上海 200092
Change Analysis of Three Major Antarctic Ice Shelves Based on Multi-source Remote Sensing Data
Wu Chenxi1,2, Liu Shijie1,2*, Tian Yixiang1,2, Tong Xiaohua1,2
1.College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, China;
2.Center for Spatial Information Science and Sustainable Development, Tongji University, Shanghai 200092, China
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摘要: 近年来,南极冰架发生较多消融、崩解等现象。利用已有的1997年和2000年的Radarsat全南极海岸线产品、2003/2004年和2008/2009年的MODIS全南极海岸线产品,以及基于2006年、2012年和2015年MODIS影像提取的海岸线,共7期数据,对南极Ross,Filchner-Ronne和Amery三大冰架前端的变化进行了分析,以变化面积、累积变化量(Shoreline Change Envelope,SCE)和净变化量(Net Shoreline Movement,NSM)3个指标来评估冰架前端的变化。结果表明,1997—2015年,Amery冰架一直呈现增长趋势,前端大部分区域往外延伸20~25 km,增长面积达3.03×103 km2;Ross冰架和Filchner-Ronne冰架在发生崩解后受上游冰川推进作用仍不断向外增长,但增长面积小于崩解退缩面积,冰架面积分别减少9.39×103 km2和5.86×103 km2,冰架崩解区域前端退缩最大达到53 km和39 km。
关键词: 冰架变化分析海岸线南极    
Abstract: In recent years, melting and calving happen in the Antarctic ice shelves. In this paper, seven periods of coastlines were applied to provide an analysis of the ice front changes of Ross, Filchner-Ronne and Amery ice shelves with the inclusion of 1997 and 2000 Radarsat products, 2003/2004 and 2008/2009 MODIS products and 2006, 2012, 2015 coastline which were extracted from MODIS images. Change area, SCE (Shoreline Change Envelope) and NSM (Net Shoreline Movement) were applied to analyze the variation of the ice shelf front. The results shows that, the ice front of Amery ice shelf has advanced since 1997 and the total outward extension distance of the ice front was about 20 to 25 km while the advance area reached 3.03×103 km2. Ross ice shelf and Filchner-Ronne ice shelf continued to advance after ice calving events under the driver action of glacier. However, the advance area was less than the retreat area and the net change area is respectively -9.39×103 km2 and -5.86×103 km2. The retreat distance of the collapse area were up to 53 km and 39 km in the two biggest ice shelves.
Key words: Coastline    Ice shelf    Change analysis    Antarctica
收稿日期: 2015-11-30 出版日期: 2016-02-10
:  P728.2  
基金资助: 国家重大科学研究计划项目“近百年极地冰盖/冰架变化对全球海平面上升的总体贡献定量研究”(编号:2012CB957701)和“全球海平面上升对我国典型区域海平面的影响研究”(编号:2012CB957704)资助.
作者简介: 吴晨曦(1991-),女,江苏南通人,硕士研究生,主要从事极地遥感研究.E-mail:13_wuchenxi@tongji.edu.cn
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引用本文:

吴晨曦, 刘世杰, 田一翔, 童小华. 基于多源遥感数据的南极三大冰架前端变化分析[J]. 地球科学进展, 2016, 31(2): 206-212.

Wu Chenxi, Liu Shijie, Tian Yixiang, Tong Xiaohua. Change Analysis of Three Major Antarctic Ice Shelves Based on Multi-source Remote Sensing Data. Advances in Earth Science, 2016, 31(2): 206-212.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2016.02.0206        http://www.adearth.ac.cn/CN/Y2016/V31/I2/206

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