RUI Collaborative Proposal: Climate and Chronology of the Last Glacial-Interglacial Transition, North-Central Great Basin, U.S.A.

RUI 合作提案:美国中北部大盆地末次冰期-间冰期转变的气候和年代学

基本信息

  • 批准号:
    0902586
  • 负责人:
  • 金额:
    $ 15.15万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-09-15 至 2013-08-31
  • 项目状态:
    已结题

项目摘要

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Recent developments in the understanding of Pleistocene glacial records in the western U.S. reveal spatial variability in the onset of the last glacial-interglacial transition (GIT; the time ~17-10 ka) among the northern, middle, southern Rocky Mountains, and the central Colorado Plateau. Such variability may reflect differences in precipitation among these areas caused by shifts in the location of the polar jet and accompanying storm tracks, or possibly the importance of Great Basin pluvial lakes as moisture sources for downwind mountain ranges. In determining the extent, timing, and chronology of glacier and lake fluctuations in the north-central Great Basin, this project fills a broad spatial gap in the understanding of glacial and paleoclimate history in the western U.S., and provides a much needed addition to climate records used to validate regional climate models. Intellectual Merit: Numerous mountain ranges and intermountain valleys in the north-central Great Basin contain abundant evidence of glacier and pluvial-lake fluctuations during the last GIT. However, the timing of glacier and lake responses to climate changes during this transition is virtually unknown in this region, and the nature of temperature and/or precipitation changes during this interval of profound climate change is poorly understood. Using glacier and pluvial-lake records from this region to infer climate changes during the Latest Pleistocene is of great current interest for several reasons. First, the location of the Great Basin, central among well-dated glacial and pluvial-lake locales in the interior western U.S., provides significant potential for examining the response of climate-sensitive, small glaciers and lakes to climate changes associated with the retreat of North American ice sheets and accompanying reorganization of regional-scale atmospheric circulation. Second, the excellent preservation of glacial and pluvial-lake deposits provides ideal targets for cosmogenic-surface exposure dating and optically-stimulated luminescence (OSL) dating. Finally, the proximity of mountain glaciers to closed-basin pluvial lakes during the last GIT affords a rare setting in which combined numerical modeling of glacier and lake mass balance can be used to set narrow limits on paleo-temperature and precipitation. Broader Impacts: This research is carried out by faculty from two predominantly undergraduate institutions, and all aspects of field and analytical work are aided by student researchers from Middlebury College and SUNY Geneseo. Maps produced through this project are published by the Nevada Bureau of Mining and Geology, making the glacial history of these popular areas available to recreational users. EarthCache sites are in development for the Nevada Bureau of Mining and Geology website to provide information about the geology and Quaternary history of popular localities in the study area. Additionally, mapping and all other results are provided to the USDA-Forest Service, the Bureau of Land Management, and the National Park Service, which manage nearly all of the proposed study areas.
该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。美国西部更新世冰川记录的最新进展揭示了北方、中部、南部落基山脉和中部科罗拉多高原之间末次冰期-间冰期过渡(GIT;时间~17-10 ka)开始时的空间变异。这种变化可能反映了这些地区之间的降水差异,这是由于极地急流和伴随而来的风暴路径的位置发生变化造成的,也可能反映了大盆地洪积湖作为顺风山脉水分来源的重要性。在确定大盆地中北部冰川和湖泊波动的范围、时间和年表方面,该项目填补了美国西部冰川和古气候历史理解方面的一个广泛的空间空白,并为用于验证区域气候模型的气候记录提供了急需的补充。智力优势:大盆地中北部的许多山脉和山间山谷包含了大量的冰川和洪积湖波动的证据。然而,在这一过渡期间,冰川和湖泊对气候变化的反应的时间在这一地区几乎是未知的,在这一深刻的气候变化期间,温度和/或降水变化的性质知之甚少。利用这一地区的冰川和洪积湖记录来推断晚更新世的气候变化是当前人们非常感兴趣的,原因有几个。首先,大盆地的位置,位于美国西部内陆地区古老的冰川和洪积湖地区的中心,为研究气候敏感的小型冰川和湖泊对与北美冰盖退缩和伴随的区域尺度大气环流重组有关的气候变化的反应提供了巨大的潜力。其次,冰川和洪积湖沉积物的良好保存为宇宙成因地表暴露测年和光释光测年提供了理想的目标。最后,在最后一次GIT期间,山地冰川与封闭盆地洪积湖的接近提供了一种罕见的环境,其中冰川和湖泊质量平衡的联合数值模拟可用于设定古温度和降水的狭窄限制。更广泛的影响:这项研究是由来自两个主要的本科院校的教师进行的,现场和分析工作的各个方面都得到了来自Middlebury College和SUNY Geneseo的学生研究人员的帮助。通过这个项目制作的地图由内华达州采矿和地质局出版,使这些受欢迎地区的冰川历史可供娱乐用户使用。地球缓存网站正在为内华达州矿业和地质局网站开发,以提供有关研究地区流行地点的地质和第四纪历史的信息。此外,地图和所有其他结果提供给美国农业部林业局,土地管理局和国家公园服务,管理几乎所有的拟议研究领域。

项目成果

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Jeffrey Munroe其他文献

Factors controlling the water quality of rock glacier springs in European and American mountain ranges
控制欧美山脉中冰川泉水水质的因素
  • DOI:
    10.1016/j.scitotenv.2024.175706
  • 发表时间:
    2024-11-25
  • 期刊:
  • 影响因子:
    8.000
  • 作者:
    Stefano Brighenti;Nicola Colombo;Thomas Wagner;Michael Pettauer;Nicolas Guyennon;Karl Krainer;Monica Tolotti;Michela Rogora;Luca Paro;Sandra M. Steingruber;Chantal Del Siro;Cristian Scapozza;Noelia R. Sileo;Cristian D. Villarroel;Masaki Hayashi;Jeffrey Munroe;Dario Trombotto Liaudat;Leonardo Cerasino;Werner Tirler;Francesco Comiti;Gerfried Winkler
  • 通讯作者:
    Gerfried Winkler

Jeffrey Munroe的其他文献

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{{ truncateString('Jeffrey Munroe', 18)}}的其他基金

RUI: Water from Stone -- Investigating the Hydrologic Role of Rock Glaciers
RUI:来自石头的水——研究岩石冰川的水文作用
  • 批准号:
    1935200
  • 财政年份:
    2020
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant
RUI: Collaborative Research: Network Cluster: Dust in the Critical Zone from the Great Basin to the Rocky Mountains
RUI:合作研究:网络集群:从大盆地到落基山脉关键区域的灰尘
  • 批准号:
    2012082
  • 财政年份:
    2020
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Cooperative Agreement
MRI: Acquisition of a Cavity Ring-Down Spectrometer for Analyzing Stable Isotopes in Water Samples at Middlebury College
MRI:在米德尔伯里学院购买用于分析水样中稳定同位素的光腔衰荡光谱仪
  • 批准号:
    1918436
  • 财政年份:
    2019
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant
RUI: Alpine Loess, Periglacial Uplands, and Exotic Additions: Investigating Past and Present Dust Deposition in the Alpine Zone of the Uinta Mountains, Utah
RUI:高山黄土、冰缘高地和外来物:调查犹他州尤因塔山脉高山地区过去和现在的灰尘沉积
  • 批准号:
    1524476
  • 财政年份:
    2015
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Continuing Grant
MRI: Acquisition of a Multi-Sensor Core Logger, Pycnometer, C:N Analyzer, and Freeze Dryer for use in Lake and Paleoclimate Studies at Middlebury College
MRI:购买多传感器岩心记录仪、比重瓶、C:N 分析仪和冷冻干燥机,用于米德尔伯里学院的湖泊和古气候研究
  • 批准号:
    0922940
  • 财政年份:
    2009
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant
SGER: Developing a Chronology for Neoglaciation in Glacier National Park, Montana
SGER:制定蒙大拿州冰川国家公园新冰川作用年表
  • 批准号:
    0808861
  • 财政年份:
    2008
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant
WORKSHOP: UINTAS 2006--The Uinta Interdisciplinary Assessment Symposium
研讨会:UINTAS 2006--Uinta跨学科评估研讨会
  • 批准号:
    0613065
  • 财政年份:
    2006
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant
Collaborative Research: High Resolution Records of Holocene Climate Change, Drought Variability and Monsoon Behavior from the Uinta Mountains of Utah
合作研究:犹他州尤因塔山脉全新世气候变化、干旱变化和季风行为的高分辨率记录
  • 批准号:
    0402328
  • 财政年份:
    2004
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant
Collaborative/RUI: Late-Quaternary Glacial and Paleoclimate History of the Uinta Mountains, Northeastern Utah
合作/RUI:犹他州东北部尤因塔山脉的晚第四纪冰川和古气候历史
  • 批准号:
    0345112
  • 财政年份:
    2004
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Continuing Grant
Planning Visit to China Collaborative Study of the Extent of Late Pleistocene Glaciation on the Eastern Qinghai-Xizang Plateau, China
计划访华 中国青藏高原东部晚更新世冰川范围合作研究
  • 批准号:
    0209993
  • 财政年份:
    2002
  • 资助金额:
    $ 15.15万
  • 项目类别:
    Standard Grant

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