Collaborative Research: Reconstructing Holocene Climate Variability and the Indonesian throughflow in the Western Equatorial Pacific

合作研究:重建全新世气候变率和西赤道太平洋的印度尼西亚通流

基本信息

  • 批准号:
    0502504
  • 负责人:
  • 金额:
    --
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2005
  • 资助国家:
    美国
  • 起止时间:
    2005-07-01 至 2008-06-30
  • 项目状态:
    已结题

项目摘要

Abstract: Under this award the proponents will determine the role of the Indonesian Throughflow (ITF) in Earth's climate through its effect on the heat and freshwater budgets and the air-sea heat fluxes of the Pacific and Indian Oceans. Estimates of salinity and temperature will be generated using d18O and Mg/Ca in benthic and planktonic foraminifera from the best sediment cores along depth transects between 300-700m water depth in the Makassar Strait. High accumulation rates will allow reconstruction centennial to millennial variability over the last ~14,000 years. Specific questions which will addressed: Are key elements of past climate variability in the western equatorial Pacific consistent with the hypothesis that variations in the amplitude and frequency of ENSO force changes in ITF on centennial to millennial time scales during the Holocene? Is the timing and amplitude of Holocene abrupt changes in ITF consistent with a link to broader tropical-scale climate change? Is there a link to extra-tropical changes? Was there a long-term change in ITF strength throughout the Holocene? How does that change compared with the ITF variability during the deglaciation? Did the apparent shift to more El Nino-like conditions in the late Holocene or the freshening of the western Pacific warm pool influence the ITF? Does the freshening trend reflect a regional response to southward migration of the ITCZ or an expansion of local, monsoon-derived freshwater inputs? The proposals broader impacts include several graduate and undergraduate students who will receive training related to this project and utilize data generated in this project as part of their undergraduate or graduate thesis.
摘要:根据这一奖项,提出者将通过印尼贯穿流(ITF)对太平洋和印度洋的热量和淡水收支以及海-气热通量的影响来确定它在地球气候中的作用。将使用马卡萨尔海峡300-700米水深范围内最佳沉积岩芯中的底栖和浮游有孔虫中的d18O和镁/钙来估算盐度和温度。较高的累积率将允许在过去约14,000年内重建百年至千年的变化。将讨论的具体问题:赤道西太平洋过去气候变异性的关键要素是否与全新世期间ENSO幅度和频率的变化迫使ITF在百年至千年的时间尺度上发生变化的假设一致?全新世ITF突然变化的时间和幅度是否与更广泛的热带规模气候变化的联系一致?这与热带以外的变化有联系吗?在整个全新世,ITF的实力是否有长期的变化?与冰川消融期间ITF的变化相比,这是如何变化的?在全新世晚期明显转向更类似厄尔尼诺的条件,或者西太平洋暖池的清新是否影响了ITF?淡化趋势是否反映了区域对ITCZ南迁的反应,还是反映了当地季风带来的淡水投入的扩大?提案的更广泛影响包括几名研究生和本科生,他们将接受与该项目有关的培训,并将该项目产生的数据作为其本科生或研究生论文的一部分。

项目成果

期刊论文数量(0)
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会议论文数量(0)
专利数量(0)

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Yair Rosenthal其他文献

The effect of carbonate chemistry on trace element incorporation in high-Mg calcitic foraminifera
碳酸盐化学作用对高镁方解石有孔虫中微量元素结合的影响
  • DOI:
    10.1016/j.gca.2024.11.022
  • 发表时间:
    2025-02-01
  • 期刊:
  • 影响因子:
    5.000
  • 作者:
    Hagar Hauzer;David Evans;Wolfgang Müller;Yair Rosenthal;Jonathan Erez
  • 通讯作者:
    Jonathan Erez
Equatorial Pacific bulk sediment <em>δ</em><sup>15</sup>N supports a secular increase in Southern Ocean nitrate utilization after the mid-Pleistocene Transition
  • DOI:
    10.1016/j.quascirev.2021.107348
  • 发表时间:
    2022-02-15
  • 期刊:
  • 影响因子:
  • 作者:
    Jonathan E. Lambert;Kelly A. Gibson;Braddock K. Linsley;Samantha C. Bova;Yair Rosenthal;Mina Surprenant
  • 通讯作者:
    Mina Surprenant
Eastern Arabian Sea COsub2/sub outgassing during the last deglaciation and Holocene related to deep-water carbonate chemistry
末次冰消期和全新世期间阿拉伯海东部二氧化碳排放与深水碳酸盐化学有关
  • DOI:
    10.1016/j.quascirev.2023.108326
  • 发表时间:
    2023-11-01
  • 期刊:
  • 影响因子:
    3.300
  • 作者:
    Smita N. Naik;Sushant S. Naik;Yair Rosenthal;Vincent Clementi
  • 通讯作者:
    Vincent Clementi
Evolution of meridional and zonal sea surface temperature gradients in the Pacific Ocean during the Quaternary period
第四纪太平洋经向和纬向海面温度梯度的演变
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Takuya Sagawa;Risako Makino;Yukimi Kubota;Yoshimi Kubota;Yair Rosenthal
  • 通讯作者:
    Yair Rosenthal
The I/Ca paleo-oxygenation proxy in planktonic foraminifera: A multispecies core-top calibration
浮游有孔虫中的 I/Ca 古氧代理指标:多物种核心顶部校准
  • DOI:
    10.1016/j.gca.2025.01.018
  • 发表时间:
    2025-03-15
  • 期刊:
  • 影响因子:
    5.000
  • 作者:
    Anya V. Hess;Yair Rosenthal;Xiaoli Zhou;Kaixuan Bu
  • 通讯作者:
    Kaixuan Bu

Yair Rosenthal的其他文献

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{{ truncateString('Yair Rosenthal', 18)}}的其他基金

Collaborative Research: Correcting sea surface temperature proxies for seasonal biases: combined data and model investigation
合作研究:修正海面温度代理的季节性偏差:结合数据和模型研究
  • 批准号:
    2202818
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Global and regional perspectives of Pleistocene paleoceanography in the western Pacific warm pool based on new sites from IODP Expedition 363
基于 IODP 363 号远征新地点的西太平洋暖池更新世古海洋学的全球和区域视角
  • 批准号:
    1834208
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
NSFOCE-BSF: Foraminiferal Na/Ca: a new proxy for reconstructing Cenozoic seawater composition
NSFOCE-BSF:有孔虫Na/Ca:重建新生代海水成分的新代理
  • 批准号:
    1634573
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Site survey and coring of potential IODP drill sites in the Western Pacific Warm Pool
西太平洋暖池潜在 IODP 钻探地点的现场调查和取芯
  • 批准号:
    1131371
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Deep Ocean Sensitivity to, and Role in the Transition from mid-Pliocene Warmth to Northern Hemisphere Glaciation
深海对上新世中期温暖向北半球冰川转变的敏感性及其作用
  • 批准号:
    1334691
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: High resolution paleoceanography in the heart of the Equatorial Pacific Cold Tongue
合作研究:赤道太平洋冷舌中心的高分辨率古海洋学
  • 批准号:
    1003400
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Temperature reconstruction of the western equatorial Pacific thermocline during the last ~2000 years: a paleo perspective for modern observations
合作研究:近2000年西赤道太平洋温跃层的温度重建:现代观测的古视角
  • 批准号:
    0902977
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Planning Visit in Support of a Collaborative Paleoclimate Study Between USA and Indonesian Scientists
计划访问以支持美国和印度尼西亚科学家之间的古气候合作研究
  • 批准号:
    0945029
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Foraminifera as a proxy for seawater neodymium: Core-top calibration and down-core application for reconstructing Holocene variability in the Indonesian Throughflow (ITF)
有孔虫作为海水钕的代表:岩心顶部校准和岩心下应用,用于重建印度尼西亚贯穿流(ITF)中的全新世变异性
  • 批准号:
    0851954
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Assessing the effects of calcite saturation on the benthic foraminiferal Mg/Ca-temperature relationship using a homothermal depth transect in the Norwegian Sea
使用挪威海恒温深度样线评估方解石饱和度对底栖有孔虫 Mg/Ca-温度关系的影响
  • 批准号:
    0341412
  • 财政年份:
    2004
  • 资助金额:
    --
  • 项目类别:
    Standard Grant

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