Collaborative Research: Tropical cyclone imprint on late Quaternary alluvial fans of Baja California: Key for understanding arid regions landscape evolution

合作研究:热带气旋对下加利福尼亚州晚第四纪冲积扇的印记:理解干旱地区景观演化的关键

基本信息

  • 批准号:
    1123929
  • 负责人:
  • 金额:
    $ 15.35万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2011
  • 资助国家:
    美国
  • 起止时间:
    2011-09-15 至 2014-08-31
  • 项目状态:
    已结题

项目摘要

Alluvial fan formation in desert environments is still a debated subject, and application of conceptual models developed for fan formation in specific regions to areas with different climate settings generally lacks robust quantitative support. This international collaborative project aims to input data into these conceptual models by testing alternate hypotheses on the formation of Late Quaternary alluvial fans in the southern Baja California peninsula in Mexico. The central hypothesis is that tropical cyclones have performed most of the geomorphic work during this period and that seasonal high intensity precipitation has been coupled to rapid weathering of bedrock to generate cyclic alluvial fan aggradation in response to millennial-scale climate variability. Combined cosmogenic nuclide depth profile age determination and optically stimulated luminescence depth profile dating will be supported with detailed analyses of sedimentology and soil development of the sedimentary units in the Late Pleistocene-Holocene. These techniques are aimed to determine simultaneously sediment production on the hillslopes and delivery and accumulation rates in the alluvial units. The results will yield a clear picture of when the alluvial units were built, when the alluvial surfaces stabilized, how fast sediment was deposited, and how long the sediment was stored in the hillslopes before transport and deposition. This project will produce datasets and knowledge that are of interest to a larger scientific audience and to the broader public. First, we will test a widely used model of alluvial fan aggradation for the deserts of southwestern North America. Second, we will test how the relevance of tropical cyclones has evolved over millennial timescales in this area and help to analyze tropical cyclone effects in other arid and semi-arid regions of the world (in particular, we will link with studies that assess activity of Eastern Pacific tropical cyclones over the last centuries and their effects on ecosystems and human population in the rapidly growing areas of southwestern U.S. and northwestern Mexico to improve hazard characterization of these storms). Third, our more precise correlation of alluvial fans surfaces normally used as paleoseismological markers will improve determination of earthquake recurrence intervals and of local and regional fault slip rates, increasing our understanding of fault kinematics not only in neighboring areas in Baja California but also in all arid southwestern North America and other regions where alluvial surfaces are used to infer earthquake recurrence rates.
沙漠环境中的冲积扇形成仍然是一个有争议的主题,将特定地区的冲积扇形成的概念模型应用于不同气候环境的地区通常缺乏强有力的定量支持。这个国际合作项目旨在通过测试墨西哥下加利福尼亚半岛南部晚第四纪冲积扇形成的替代假设,将数据输入到这些概念模型中。中心假设是,热带气旋在这一时期完成了大部分地貌工作,并且季节性高强度降水与基岩的快速风化相结合,产生了响应千年尺度气候变率的循环冲积扇沉积。对晚更新世-全新世沉积单元的沉积学和土壤发育进行详细分析,为宇宙成因核素深度剖面年龄测定和光激发光深度剖面定年提供支持。这些技术的目的是同时确定山坡上的沉积物产量和冲积单元的输送和积累速率。这些结果将使我们清楚地了解冲积单元是何时建成的,冲积面是何时稳定下来的,沉积物沉积的速度有多快,以及沉积物在运输和沉积之前在山坡上储存了多长时间。该项目将产生更多的科学受众和更广泛的公众感兴趣的数据集和知识。首先,我们将在北美西南部的沙漠中测试一个广泛使用的冲积扇沉积模型。其次,我们将测试热带气旋在该地区千年时间尺度上的相关性是如何演变的,并帮助分析热带气旋对世界其他干旱和半干旱地区的影响(特别是,我们将结合评估过去几个世纪东太平洋热带气旋活动及其对美国西南部和墨西哥西北部快速发展地区的生态系统和人口影响的研究,以改进这些风暴的危害特征。第三,我们对通常用作古地震标志的冲积扇表面的更精确的相关性将改善地震复发间隔和局部和区域断层滑动率的确定,增加我们对断层运动学的理解,不仅在下加利福尼亚州的邻近地区,而且在所有干旱的北美西南部和其他地区,冲积扇表面被用来推断地震复发率。

项目成果

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Edward Rhodes其他文献

Task-related changes in resting state connectivity are affected by temporal interference (TI) stimulation
静息态连接性的任务相关变化受时间干扰(TI)刺激的影响
  • DOI:
    10.1016/j.brs.2025.04.010
  • 发表时间:
    2025-05-01
  • 期刊:
  • 影响因子:
    8.400
  • 作者:
    Danielle Lauren Kurtin;Ketevan Alania;Edward Rhodes;Samuel Vincent;Ines R. Violante;Nir Grossman
  • 通讯作者:
    Nir Grossman
The neuron mixer and its impact on human brain dynamics
神经元混合器及其对人类大脑动力学的影响
  • DOI:
    10.1016/j.celrep.2024.114274
  • 发表时间:
    2024-06-25
  • 期刊:
  • 影响因子:
    6.900
  • 作者:
    Charlotte E. Luff;Robert Peach;Emma-Jane Mallas;Edward Rhodes;Felix Laumann;Edward S. Boyden;David J. Sharp;Mauricio Barahona;Nir Grossman
  • 通讯作者:
    Nir Grossman
Closed-loop auditory stimulation of the alpha oscillation
α波振荡的闭环听觉刺激
  • DOI:
    10.1016/j.brs.2024.12.058
  • 发表时间:
    2025-01-01
  • 期刊:
  • 影响因子:
    8.400
  • 作者:
    Henry Hebron;Beatrice Lugli;Radost Dimitrova;Valeria Jaramillo;Lisa Yeh;Edward Rhodes;Nir Grossman;Derk-Jan Dijk;Ines Violante
  • 通讯作者:
    Ines Violante
Investigating the direct effect of temporal interference (TI) stimulation on cortical activity with simultaneous EEG recording in humans
  • DOI:
    10.1016/j.brs.2023.01.655
  • 发表时间:
    2023-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Ketevan Alania;Edward Rhodes;Ibraheem Bin Suhayl;Inês Violante;Nir Grossman
  • 通讯作者:
    Nir Grossman

Edward Rhodes的其他文献

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{{ truncateString('Edward Rhodes', 18)}}的其他基金

Understanding non-elastic effects in accretionary wedges using the Kaikoura earthquake: Investigating a major potential tsunami hazarard
利用凯库拉地震了解增生楔的非弹性效应:调查重大的潜在海啸危险
  • 批准号:
    NE/R00515X/1
  • 财政年份:
    2018
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Research Grant
NSFGEO-NERC: Latest Pleistocene-Holocene incremental slip record of the Kekerengu-Jordan fault system, northern South Island, New Zealand
NSFGEO-NERC:新西兰南岛北部 Kekerengu-Jordan 断层系统最新更新世-全新世增量滑移记录
  • 批准号:
    NE/S007091/1
  • 财政年份:
    2018
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Research Grant
Rapid recovery of high resolution topographic and kinematic data from the Kaikoura earthquake, New Zealand
快速恢复新西兰凯库拉地震的高分辨率地形和运动学数据
  • 批准号:
    NE/P021425/1
  • 财政年份:
    2017
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Research Grant
Collaborative Research: Interactions between Holocene Lake Levels and Alluvial Fans in the Western U.S. in Response to Changing Climates
合作研究:美国西部全新世湖水位与冲积扇之间的相互作用对气候变化的响应
  • 批准号:
    1251690
  • 财政年份:
    2013
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Continuing Grant
Collaborative Research: Towards an Understanding of the Collective Behavior of Regional Fault Networks: The Marlborough Fault System, New Zealand
合作研究:了解区域断层网络的集体行为:新西兰马尔堡断层系统
  • 批准号:
    1321912
  • 财政年份:
    2013
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Continuing Grant
Helioseismic Probing of Solar Internal Structure and Dynamics Using GONG+ Observations
利用 GONG 观测对太阳内部结构和动力学进行日震探测
  • 批准号:
    0307934
  • 财政年份:
    2003
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Standard Grant
Joint US-CRIMEA Helioseismic Studies of Solar Variability
美国-克里米亚太阳变率联合日震研究
  • 批准号:
    9119617
  • 财政年份:
    1992
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Continuing Grant
A Joint U.S.-Italian Research Project in Solar Seismology
美国-意大利太阳地震学联合研究项目
  • 批准号:
    8400213
  • 财政年份:
    1984
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Standard Grant
Oscillations of the Sun As a Probe of Large-Scale Solar Activity and Solar-Terrestrial Relations
太阳的振荡作为大规模太阳活动和日地关系的探测器
  • 批准号:
    8009469
  • 财政年份:
    1980
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Standard Grant
A Remote Computer-Graphics Facility For Undergraduate Astronomy Instruction
用于本科生天文学教学的远程计算机图形设施
  • 批准号:
    8013600
  • 财政年份:
    1980
  • 资助金额:
    $ 15.35万
  • 项目类别:
    Standard Grant

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