Evidence for the long-term sedimentary environment in an Antarctic subglacial lake

Smith Andrew M.; Woodward John; Ross Neil; Bentley Michael J.; Hodgson Dominic A.; Siegert Martin J.; King Edward C.

首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Evidence for the long-term sedimentary environment in an Antarctic subglacial lake

【24h】

Evidence for the long-term sedimentary environment in an Antarctic subglacial lake

机译：南极沉积湖中长期沉积环境的证据

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Lakes beneath the Antarctic Ice Sheet are of fundamental scientific interest for their ability to contain unique records of ice sheet history and microbial life in their sediments. However, no records of subglacial lake sedimentation have yet been acquired from beneath the interior of the ice sheet, and understanding of sediment pathways, processes and structure in subglacial lake environments remains uncertain. Here we present an analysis of seismic data from Subglacial Lake Ellsworth, showing that the lake bed comprises very fine-grained sediments deposited in a low energy environment, with low water- and sediment-fluxes. Minimum sediment thickness is 6 m, the result of prolonged low sedimentation rates. Based on the few available analogues, we speculate this sediment age range is a minimum of 150 ka, and possibly 1 Ma. Sediment mass movements have occurred, but they are rare and have been buried by subsequent sedimentation. We present a new conceptual model of subglacial lake sedimentation, allowing a framework for evaluating processes in subglacial lake environments, and for determining future lake access locations and interpreting subglacial lake samples. (C) 2018 The Authors. Published by Elsevier B.V.

机译：南极冰盖下面的湖泊对其沉积物中含有独特记录的冰盖历史和微生物生活的能力至关重要。然而，没有从冰盖内部的下面获得沉淀的沉淀的记录，并且沉积物途径的理解，底层湖环境中的沉积物途径，过程和结构仍然不确定。在这里，我们展示了Sublacial Lake Ellsworth的地震数据分析，表明湖床包括沉积在低能量环境中的非常细粒度的沉积物，具有低水和沉积物。最小沉积物厚度为6米，延长沉降率延长的结果。基于少数可用类似物，我们推测这种沉积物年龄范围至少为150 ka，可能＆ 1 ma。已经发生沉积物质量运动，但它们是罕见的，并且已经被随后的沉降掩埋。我们展示了一个新的底杉湖沉降概念模型，允许框架评估子杉木湖环境中的过程，以及确定未来的湖泊接入位置和解释子涂布湖样本。（c）2018年作者。由elsevier b.v出版。

著录项

来源
《Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System》 |2018年第2018期|共13页
作者
Smith Andrew M.; Woodward John; Ross Neil; Bentley Michael J.; Hodgson Dominic A.; Siegert Martin J.; King Edward C.;
展开▼
作者单位

British Antarctic Survey Nat Environm Res Council Madingley Rd Cambridge CB3 0ET England;

Northumbria Univ Dept Geog Ellison Pl Newcastle Upon Tyne NE1 8ST Tyne &

Wear England;

Newcastle Univ Sch Geog Polit &

Sociol Claremont Rd Newcastle Upon Tyne NE1 7RU Tyne &

Wear England;

Univ Durham Dept Geog South Rd Durham DH1 3LE England;

British Antarctic Survey Nat Environm Res Council Madingley Rd Cambridge CB3 0ET England;

Imperial Coll London Grantham Inst South Kensington SW7 2AZ England;

British Antarctic Survey Nat Environm Res Council Madingley Rd Cambridge CB3 0ET England;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类天文学、地球科学;行星、卫星、彗星、流星、陨星;
关键词
Subglacial Lake Ellsworth; glaciology; active-source seismology; sedimentary environment; ice sheet; Antarctica;

机译：Sublacial Lake Ellsworth;冰川学;主动源地震学;沉积环境;冰盖;南极洲;

相似文献

外文文献
中文文献
专利

1. Evidence for the long-term sedimentary environment in an Antarctic subglacial lake [J] . Smith Andrew M., Woodward John, Ross Neil, Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System . 2018,第期

机译：南极沉积湖中长期沉积环境的证据
2. Exploration of Ellsworth Subglacial Lake: a concept paper on the development, organisation and execution of an experiment to explore, measure and sample the environment of a West Antarctic subglacial lake [J] . M.J. Siegert, A. Behar, M. Bentley, Reviews in Environmental Science and Bio/Technology . 2007,第1a3期

机译：埃尔斯沃思冰川湖的探索：关于开发，组织和执行探索，测量和采样西南极冰川湖环境的实验的概念文件
3. Exploration of Ellsworth Subglacial Lake: a concept paper on the development,organisation and execution of an experiment to explore,measure and sample the environment of a West Antarctic subglacial lake [J] . M.J. Siegert, A. Behar, M. Bentley Reviews in Environmntal Science and Biotechnology . 2007,第1a3期

机译：埃尔斯沃思冰川湖的探索：关于开发，组织和执行探索，测量和采样西南极冰川湖环境的实验的概念文件
4. Hydrological connections between Antarctic subglacial lakes,the flow of water beneath the East Antarctic Ice Sheetand implications for sedimentary processes [C] . MARTIN J. SIEGERT, ANNE LE BROCQt, ANTONY J. PAYNE International Conference on "Glacial Sedimentary Processes and Products" . 2007

机译：南极底湖湖泊之间的水文联系，东南极冰层下面的水流，对沉积过程的影响
5. Microbial ecology of an Antarctic subglacial environment. [D] . Mikucki, Jill Ann. 2005

机译：南极冰下环境的微生物生态学。
6. Evidence for a palaeo-subglacial lake on the Antarctic continental shelf [O] . Gerhard Kuhn, Claus-Dieter Hillenbrand, Sabine Kasten, -1

机译：南极大陆架上古近冰湖的证据
7. Evidence for the long-term sedimentary environment in an Antarctic subglacial lake [O] . Andrew M. Smith, John Woodward, Neil Ross, 2018

机译：南极沉积湖中长期沉积环境的证据

Evidence for the long-term sedimentary environment in an Antarctic subglacial lake

摘要

著录项

相似文献

相关主题

期刊订阅