Impact of Quaternary megafloods on erosion of the Tsangpo River gorge, southeastern Tibet

第四纪特大洪水对藏东南雅鲁藏布江峡谷侵蚀的影响

基本信息

  • 批准号:
    1349279
  • 负责人:
  • 金额:
    $ 22.4万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-04-15 至 2018-03-31
  • 项目状态:
    已结题

项目摘要

The last decade has seen a resurgence of debate over the role of extreme events such as earthquakes, landslides and floods in long-term erosion and landscape evolution. Yet progress in this area is fundamentally limited by the difficulty of observing extreme events on human timescales and linking them to million-year average erosion rate measurements. This project helps bridge the gap by combining field, laboratory and computer modeling approaches to investigate the first direct evidence of the legacy of prehistoric megafloods in one of the most rapidly eroding natural landscapes on Earth, southeastern Tibet. This project will integrate glacial lake deposit chronologies, field observations and dating of flood deposits, provenance data for sediments deposited in different magnitude flows, and computer simulations of flood events to (1) model flood hydraulics, landslide triggering, slackwater sediment deposition and flood hazard; (2) relate flood conditions to erosion processes and evaluate the extent to which megafloods focus erosion in the gorge; and (3) begin to constrain the timing and frequency of megaflood events to better understand their relationship to climate and impact on long-term erosion. Ultimately, this novel approach of chemically "fingerprinting" flood sands (using zircon U-Pb ages) to investigate erosion processes will improve our understanding of possible feedbacks between river incision and rock uplift, Tibetan plateau margin evolution, and links between climate and erosion on glacial-interglacial timescales. The modeling study will benefit society by evaluating flood hazard associated with hydropower dam development in the region. The project involves collaborations among the University of Washington, US Geological Survey, and a disaster management agency in India. Graduate and undergraduate research students will be trained in field, laboratory, and computer modeling methods. To promote K-12 STEM education in minority-serving high schools, the researchers and students will work with a teacher to develop a lesson and activity on floods and megaflood erosion for the University of Washington outreach program, Rocking Out. Additionally, research findings will be disseminated broadly through University of Washington's outreach and high school programs, Indian disaster management personnel, university courses, conferences and publications. This project is jointly supported by the Geomorphology and Land Use Dynamics and International Science and Engineering programs.
在过去十年中,人们再次就地震、山体滑坡和洪水等极端事件在长期侵蚀和景观演变中的作用展开辩论。然而,由于难以观察人类时间尺度上的极端事件并将其与百万年平均侵蚀率测量联系起来,该领域的进展从根本上受到限制。该项目通过结合实地、实验室和计算机建模方法,帮助弥合差距,以调查地球上侵蚀最快的自然景观之一西藏东南部史前特大洪水遗留的第一个直接证据。 该项目将综合冰川湖存款年表、洪水沉积物的实地观察和年代测定、不同量级水流沉积物的来源数据以及洪水事件的计算机模拟,以便:(1)建立洪水水力学、滑坡触发、静水沉积物沉积和洪水灾害模型;(2)将洪水条件与侵蚀过程联系起来,并评估特大洪水集中侵蚀峡谷的程度;(3)开始限制巨型气候事件发生的时间和频率,以便更好地了解它们与气候的关系以及对长期侵蚀的影响。 最后,这种新的化学“指纹”洪砂(使用锆石U-Pb年龄)研究侵蚀过程的方法将提高我们对河流切割和岩石隆起,青藏高原边缘演化之间可能的反馈的理解,以及冰川-间冰期时间尺度上气候和侵蚀之间的联系。 该模型研究将通过评估该地区水电站大坝开发的洪水危害来造福社会。 该项目涉及华盛顿大学、美国地质调查局和印度一个灾害管理机构之间的合作。 研究生和本科研究生将接受现场,实验室和计算机建模方法的培训。为了促进K-12 STEM教育在少数民族服务的高中,研究人员和学生将与教师合作,为华盛顿大学的推广计划,摇滚出制定一个关于洪水和巨型森林侵蚀的课程和活动。 此外,研究结果将通过华盛顿大学的外联和高中方案、印度灾害管理人员、大学课程、会议和出版物广泛传播。 该项目由地貌学和土地利用动力学以及国际科学与工程计划共同支持。

项目成果

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Katharine Huntington其他文献

Katharine Huntington的其他文献

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{{ truncateString('Katharine Huntington', 18)}}的其他基金

Collaborative Research: Geomorphic legacy of megaflood deposits on river processes and form, Eastern Himalaya
合作研究:喜马拉雅东部大洪水沉积物对河流过程和形态的地貌遗产
  • 批准号:
    2220336
  • 财政年份:
    2022
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Standard Grant
Acquisition of a clumped isotope gas-source isotope-ratio mass spectrometer and carbonate device for inclusive research and education at the University of Washington
华盛顿大学购买了用于包容性研究和教育的聚集同位素气源同位素比质谱仪和碳酸盐装置
  • 批准号:
    2153799
  • 财政年份:
    2022
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Standard Grant
Collaborative Proposal: CO2PIP — A Community Project to advance and standardize approaches to paleo-CO2 reconstruction and build the next-generation Phanerozoic record
合作提案:CO2PIP — 一个社区项目,旨在推进古二氧化碳重建方法并使其标准化,并建立下一代显生宙记录
  • 批准号:
    2121597
  • 财政年份:
    2021
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Standard Grant
Collaborative Research: Improving and calibrating a Tunable Infrared Laser Direct Absorption Spectroscopy (TILDAS) system for clumped isotope analysis of CO2
合作研究:改进和校准用于 CO2 聚集同位素分析的可调谐红外激光直接吸收光谱 (TILDAS) 系统
  • 批准号:
    1933130
  • 财政年份:
    2020
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Standard Grant
Collaborative Research: Development of Tunable Infrared Laser Direct Absorption Spectroscopy (TILDAS) for clumped isotope analysis of CO2
合作研究:开发用于 CO2 聚集同位素分析的可调谐红外激光直接吸收光谱 (TILDAS)
  • 批准号:
    1649986
  • 财政年份:
    2017
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Continuing Grant
Collaborative Research: Interpreting clumped isotope temperatures and δ18O records from pedogenic carbonate: influence of climate, seasonality, and elevation
合作研究:解释聚集同位素温度和
  • 批准号:
    1252064
  • 财政年份:
    2013
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Standard Grant
Early Career: Acquisition of a Mass Spectrometer for Research and Education in Tectonics and Paleoclimate
早期职业生涯:购买一台质谱仪用于构造和古气候的研究和教育
  • 批准号:
    1156134
  • 财政年份:
    2012
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Standard Grant
CAREER: The Detrital Record of Focused Rock Uplift and Exhumation, Northeast Indian Himalaya
职业:印度喜马拉雅东北部集中岩石隆起和折返的碎屑记录
  • 批准号:
    0955309
  • 财政年份:
    2010
  • 资助金额:
    $ 22.4万
  • 项目类别:
    Continuing Grant

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职业:牙买加第四纪古生物学:生物多样性热点地区的殖民、灭绝和复原力
  • 批准号:
    2340910
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    2024
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陆地原位宇宙成因核素日测揭示日本列岛第四纪地壳隆升速率的时间变化
  • 批准号:
    23H00723
  • 财政年份:
    2023
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旅行:支持第四纪研究中的学生和早期职业科学家:2023 年 USNC/INQUA 国会旅行奖学金计划
  • 批准号:
    2316129
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    2023
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开发地质年代学技术来评估第四纪火山喷发的危险
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Research on enantioselective parallel total syntheses of antitumor polycyclic natural products with all-carbon quaternary stereogenic centers at multiple fused rings
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