Sea-ice conditions in the Adélie Depression, Antarctica, during besetment of the icebreaker RV Xuelong
Sea-ice conditions in the Adélie Depression, Antarctica, during besetment of the icebreaker RV Xuelong
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DOI：
10.3189/2015aog69a007
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发表时间：
2015
影响因子：
2.9
通讯作者：
M. Zhai;Xinqing Li;F. Hui;Xiao Cheng;P. Heil;Tiancheng Zhao;T. Jiang;Cheng Cheng-Cheng;Tianyu Ci;Yan Liu;Zhaohui Chi;Jian Liu
中科院分区：
文献类型：
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作者：
M. Zhai;Xinqing Li;F. Hui;Xiao Cheng;P. Heil;Tiancheng Zhao;T. Jiang;Cheng Cheng-Cheng;Tianyu Ci;Yan Liu;Zhaohui Chi;Jian Liu
摘要在2013/14年中国第30次南极考察期间，中国“雪龙”号破冰船接到了俄罗斯“绍卡利斯基院士”号的救援电话。在协助将人员从俄罗斯船只遣返到澳大利亚RV Aurora Australis的过程中，RV Xuelong本身被困在阿德利洼地地区的压实冰中。分析MODIS和SAR图像提供了一个详细的描述区域海冰条件，导致雪龙号长达6天的困扰。遥感图像揭示了四个阶段的海冰特征在封存：聚集，压实，分散和崩解阶段。确定了2013年12月下旬和2014年1月上旬当地海冰状况的四个特征因素：沿海流的表面成分;近地表风;海洋潮汐;以及地表气温。这项研究表明，航运活动在冰投资沃茨应加强对冰的情况的一般知识。此外，在开展这类活动期间，应定期获取高时空分辨率遥感数据，以监测当地和区域海冰变化情况，避免船只被困。
Abstract During the 30th Chinese Antarctic Expedition in 2013/14, the Chinese icebreaker RV Xuelong answered a rescue call from the Russian RV Akademik Shokalskiy. While assisting the repatriation of personnel from the Russian vessel to the Australian RV Aurora Australis, RV Xuelong itself became entrapped within the compacted ice in the Adélie Depression region. Analysis of MODIS and SAR imagery provides a detailed description of the regional sea-ice conditions which led to the 6 day long besetment of RV Xuelong. The remotely sensed imagery revealed four stages of sea-ice characteristics during the entrapment: the gathering, compaction, dispersion and calving stages. Four factors characterizing the local sea-ice conditions during late December 2013 and early January 2014 were identified: surface component of the coastal current; near-surface wind; ocean tides; and surface air temperature. This study demonstrates that shipping activity in ice-invested waters should be underpinned by general knowledge of the ice situation. In addition, during such activity high spatiotemporal resolution remotely sensed data should be acquired regularly to monitor local and regional sea-ice changes with a view to avoiding the besetment of vessels.