Technologies for retrieving sediment cores in Antarctic subglacial settings.
Technologies for retrieving sediment cores in Antarctic subglacial settings.
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在南极冰下环境中回收沉积物核心的技术。
DOI：
10.1098/rsta.2015.0056
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Hodgson DA
中科院分区：
文献类型：
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作者：
Hodgson DA
南极冰盖下沉积物的积累包含了一系列物理和化学替代物，有可能记录冰盖历史的变化，并确定和描述冰下环境中的生命。冰下沉积物和沉积物岩心的提取对现有技术提出了一些独特的挑战。本文简要回顾了冰下环境沉积物取样的历史。然后，它概述了一些技术挑战和限制，在开发用于冰下冰架设置（如乔治VI冰架和拉森冰架），冰流下（如拉特福德冰流），在或接近接地线（如Whillans冰流）和冰盖下的冰下湖（如埃尔斯沃思湖）的岩芯。的主要功能的岩心设计在每个这些冰下设置操作的描述和说明连同他们的部署程序的意见。
Accumulations of sediment beneath the Antarctic Ice Sheet contain a range of physical and chemical proxies with the potential to document changes in ice sheet history and to identify and characterize life in subglacial settings. Retrieving subglacial sediments and sediment cores presents several unique challenges to existing technologies. This paper briefly reviews the history of sediment sampling in subglacial environments. It then outlines some of the technological challenges and constraints in developing the corers being used in sub-ice shelf settings (e.g. George VI Ice Shelf and Larsen Ice Shelf), under ice streams (e.g. Rutford Ice Stream), at or close to the grounding line (e.g. Whillans Ice Stream) and in subglacial lakes deep under the ice sheet (e.g. Lake Ellsworth). The key features of the corers designed to operate in each of these subglacial settings are described and illustrated together with comments on their deployment procedures.