Collaborative Research: Assessing the Antarctic Contribution to Sea-level Changes during the Last Deglaciation: Constraints from Darwin Glacier

合作研究:评估末次冰消期南极对海平面变化的贡献:达尔文冰川的限制

基本信息

  • 批准号:
    1246170
  • 负责人:
  • 金额:
    $ 18.51万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-09-01 至 2017-08-31
  • 项目状态:
    已结题

项目摘要

Hall/1246170This award supports a project to reconstruct past ice-surface elevations from detailed glacial mapping and dating of moraines (using 14C dates of algae from former ice-marginal ponds and 10Be surface exposure ages) in the region of the Darwin-Hatherton Glaciers in Antarctica in order to try and resolve very different interpretations that currently exist about the glacial history in the region. The results will be integrated with existing climate and geophysical data into a flow-line model to gain insight into glacier response to climate and ice-dynamics perturbations during the Late Glacial Maximum (LGM) in Antarctica. The work will contribute to a better understanding of both LGM ice thickness and whether or not there is any evidence that Antarctica contributed to Meltwater Pulse (MWP)-1A a very controversial topic in Antarctic glacial geology. The intellectual merit of the work relates to the fact that reconstructing past fluctuations of the Antarctic Ice Sheet (AIS) is critical for understanding the sensitivity of ice volume to sea-level and climatic change. Constraints on past behavior help put ongoing changes into context and provide a basis for predicting future sea-level rise. Broader impacts include the support of two graduate and two undergraduate students, as well as a female early-career investigator. Graduate students will be involved in all stages of the project from planning and field mapping to geochronological analyses, interpretation, synthesis and reporting. Two undergraduates will work on lab-based research from the project. The project also will include visits to K-12 classrooms to talk about glaciers and climate change, correspondence with teachers and students from the field, and web-based outreach. This award has field work in Antarctica.
该奖项支持了一个项目,该项目通过详细的冰川测绘和冰碛测年(使用来自前冰缘池塘的藻类的14C测年和10Be表面暴露年龄)重建南极洲达尔文-哈瑟顿冰川地区过去的冰表面高度,以尝试解决目前存在的关于该地区冰川历史的不同解释。这些结果将与现有的气候和地球物理数据整合到一个流线模型中,以深入了解南极晚冰期极大期(LGM)期间冰川对气候和冰动力扰动的响应。这项工作将有助于更好地了解LGM冰厚,以及是否有证据表明南极洲对融水脉冲(MWP)-1A有贡献,这是南极冰川地质学中一个非常有争议的话题。这项工作的知识价值在于,重建南极冰盖过去的波动对于了解冰量对海平面和气候变化的敏感性至关重要。对过去行为的限制有助于将正在发生的变化纳入背景,并为预测未来海平面上升提供基础。更广泛的影响包括支持两名研究生和两名本科生,以及一名女性早期职业调查员。研究生将参与项目的所有阶段,从规划和实地测绘到地质年代分析、解释、综合和报告。两名本科生将参与该项目的实验室研究。该项目还将包括访问K-12教室,讨论冰川和气候变化,与来自实地的教师和学生通信,以及基于网络的推广。这个奖项在南极洲进行实地考察。

项目成果

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Brenda Hall其他文献

Glacial geology of the Hudson Mountains, Amundsen Sea sector, West Antarctica
南极洲西部阿蒙森海地区哈德逊山脉的冰川地质学
  • DOI:
    10.1016/j.quascirev.2024.109027
  • 发表时间:
    2025-02-15
  • 期刊:
  • 影响因子:
    3.300
  • 作者:
    Joanne S. Johnson;Keir A. Nichols;Teal R. Riley;Ryan A. Venturelli;Dominic A. Hodgson;Greg Balco;Brenda Hall;James A. Smith;John Woodward
  • 通讯作者:
    John Woodward
Rapid deglaciation of eastern Maine, northeastern North America, during Heinrich Stadial 1
在海因里希事件1期间,北美洲东北部缅因州东部的快速冰川消退
  • DOI:
    10.1016/j.quascirev.2025.109444
  • 发表时间:
    2025-09-01
  • 期刊:
  • 影响因子:
    3.300
  • 作者:
    Brenda Hall;Thomas Lowell;Gordon Bromley;Aaron Putnam;Katherine Allen
  • 通讯作者:
    Katherine Allen

Brenda Hall的其他文献

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{{ truncateString('Brenda Hall', 18)}}的其他基金

P2C2: Collaborative Research: Timing of the Glacial Termination in Southernmost South America
P2C2:合作研究:南美洲最南端冰川终止的时间
  • 批准号:
    2001352
  • 财政年份:
    2020
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Response of the Antarctic Ice Sheet to the Last Great Global Warming
南极冰盖对上次全球变暖的反应
  • 批准号:
    1643248
  • 财政年份:
    2017
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Collaborative Research: High-resolution Reconstruction of Holocene Deglaciation in the Southern Ross Embayment
合作研究:南罗斯湾全新世冰川消退的高分辨率重建
  • 批准号:
    1443248
  • 财政年份:
    2016
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Collaborative Research: Exploring the Vulnerability of Southern Ocean Pinnipeds to Climate Change - An Integrated Approach
合作研究:探索南大洋鳍足类动物对气候变化的脆弱性——综合方法
  • 批准号:
    1141849
  • 财政年份:
    2012
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Sensitivity of the Antarctic Ice Sheet to Climate Change over the Last Two Glacial/Interglacial Cycles
南极冰盖对最近两次冰期/间冰期周期气候变化的敏感性
  • 批准号:
    0944150
  • 财政年份:
    2010
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Collaborative Research: Timing and structure of the last glacial maximum and termination in southern Peru: Implications for the role of the tropics in climate change
合作研究:秘鲁南部末次盛冰期和终止的时间和结构:热带地区在气候变化中的作用的影响
  • 批准号:
    1003471
  • 财政年份:
    2010
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Collaborative Research: Sensitivity of local glaciers in central East Greenland to Holocene climate change
合作研究:格陵兰东部中部当地冰川对全新世气候变化的敏感性
  • 批准号:
    0908081
  • 财政年份:
    2009
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Collaborative Research: Constraints on the last Ross Ice Sheet from Glacial Deposits in the Southern Transantarctic Mountains
合作研究:南横贯南极山脉冰川沉积物对最后一个罗斯冰盖的限制
  • 批准号:
    0838615
  • 财政年份:
    2009
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant
Empowerment of consumers, carers & communities to support people with mental illness in remote Indigenous C.Y. communit
赋予消费者、护理人员权力
  • 批准号:
    nhmrc : 456339
  • 财政年份:
    2007
  • 资助金额:
    $ 18.51万
  • 项目类别:
    NHMRC Postgraduate Scholarships
The Science Behind Climate Change: A Journey to Reedy Glacier,
气候变化背后的科学:芦苇冰川之旅,
  • 批准号:
    0628867
  • 财政年份:
    2007
  • 资助金额:
    $ 18.51万
  • 项目类别:
    Standard Grant

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合作研究:评估加州海流生态系统中火体入侵和持续存在的原因
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