EAGER: Documenting the Spatial Pattern of Drought in Western North America During the Holocene
EAGER:记录全新世期间北美西部干旱的空间模式
基本信息
- 批准号:1252874
- 负责人:
- 金额:$ 5.41万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2012
- 资助国家:美国
- 起止时间:2012-09-01 至 2013-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Drought in western North America impacts the environment and economy by limiting water for municipalities, agriculture, forestry, hydropower, fisheries and recreational uses. The problem of limited water resources will be compounded by rapid population growth in the western U.S. and the loss of alpine snowpack and glaciers. This problem will be especially difficult in the southern reaches of this region, where alpine snowpack currently buffers stream flow during the summer dry season. Documenting the timing, magnitude, duration and geographic pattern of past wet and dry cycles is an important step toward understanding the causes of droughts. This research will help scientists understand the frequency, duration and magnitude of wet and dry cycles, help place the current drought impacting the region in perspective, and aid policy makers so that they can make better-informed plans regarding water resources. This EAGER grant will use Holocene lake sediment records from British Columbia to reconstruct the spatial and temporal patterns of drought and pluvial cycles along the cordillera of western North America and help identify the underlying causes of these events. The goal is to reconstruct two quantitative Holocene paleoprecipitation records using consistent multiproxy methods, and to compare the results to ongoing work on similar lakes in the western cordillera of North America. The proposed locations in central and northern British Columbia contain numerous lakes with geological and limnological characteristics similar to lakes previously studied in Washington, Oregon, Montana, and the Yukon Territory. The scientists will develop well-dated stable isotope data series from lakes that produce and preserve authigenic calcium carbonate. This carbonate records the oxygen isotope signal of lake water over time, which reflects the frequency and duration of droughts. This data will then be used in climate models to: (i) quantitatively interpret existing proxy data, (ii) identify and rank the factors that influence the frequency and intensity of aridity patterns such as synoptic teleconnections involving both El Niño Southern Oscillation-tropical Pacific climate dynamics and the Atlantic Meridional Overturning Circulation, and most importantly, (iii) reduce the uncertainty in probabilistic forecasts of future drought pattern responses to anthropogenic forcing.
北美西部的干旱限制了市政、农业、林业、水电、渔业和娱乐用途的用水,从而影响了环境和经济。水资源有限的问题将因美国西部人口的快速增长以及高山积雪和冰川的消失而变得更加复杂。这一问题在该地区的南部将特别困难,那里的高山积雪目前在夏季旱季缓冲了水流。记录过去干湿循环的时间、规模、持续时间和地理模式是了解干旱原因的重要一步。 这项研究将帮助科学家了解干湿循环的频率、持续时间和幅度,帮助正确看待目前影响该地区的干旱,并帮助政策制定者制定更明智的水资源计划。 这项EAGER赠款将使用来自不列颠哥伦比亚省的全新世湖泊沉积物记录,重建北美西部山脉沿着干旱和洪水周期的时空模式,并帮助确定这些事件的根本原因。我们的目标是重建两个定量全新世古降水记录使用一致的多代理方法,并比较结果正在进行的工作在北美西部的科迪勒拉山脉类似的湖泊。位于中部和北方不列颠哥伦比亚省的拟定地点包含许多湖泊,其地质和湖沼学特征与之前在华盛顿、俄勒冈州、蒙大拿州和育空地区研究的湖泊相似。 科学家们将从产生和保存自生碳酸钙的湖泊中开发出日期明确的稳定同位素数据系列。这种碳酸盐记录了湖水随时间变化的氧同位素信号,反映了干旱的频率和持续时间。这些数据将用于气候模型,以便:(i)定量解释现有的代用数据,(ii)确定影响干旱模式的频率和强度的因素,如涉及厄尔尼诺南方涛动-热带太平洋气候动力学和大西洋经向翻转环流的天气遥相关,并对其进行排序,最重要的是,减少未来干旱模式对人为强迫的响应的概率预测的不确定性。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Mark Abbott其他文献
What Would the Beloved Community Look Like? An Examination of Mitigation Strategies by Design
心爱的社区会是什么样子?
- DOI:
10.1007/978-3-319-72956-5_5 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Catalina Freixas;Mark Abbott - 通讯作者:
Mark Abbott
Climate and anthropogenic controls on the carbon cycle of Xingyun Lake, China
星云湖碳循环的气候和人为控制
- DOI:
10.1016/j.palaeo.2018.04.012 - 发表时间:
2018-07 - 期刊:
- 影响因子:0
- 作者:
Aubrey Hillman;Mark Abbott;JunQing Yu - 通讯作者:
JunQing Yu
What Have We Wrought? An Explication of the Consequences of Segregation
我们做了什么?
- DOI:
10.1007/978-3-319-72956-5_3 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Catalina Freixas;Mark Abbott - 通讯作者:
Mark Abbott
The high burden of dengue and chikungunya in southern coastal Ecuador: Epidemiology, clinical presentation, and phylogenetics from a prospective study in Machala in 2014 and 2015
厄瓜多尔南部沿海登革热和基孔肯雅热的高负担:2014 年和 2015 年在马查拉进行的一项前瞻性研究的流行病学、临床表现和系统发育学
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
Anna M. Stewart;A. Kenneson;Christine A. King;Mark Abbott;Arturo;Barbachano;Efraín Beltrán;M. Borbor;Cárdenas;Cinthya Cueva;J. Finkelstein;C. Lupone;R. Jarman;I. Berry;S. Mehta;Mark E. Polhemus;Mercy Silva;Sadie J Ryan;T. Endy - 通讯作者:
T. Endy
The isotopic response of Lake Chenghai, SW China, to hydrologic modification from human activity
中国西南澄海湖对人类活动水文改变的同位素响应
- DOI:
10.1177/0959683615622553 - 发表时间:
2016-01 - 期刊:
- 影响因子:0
- 作者:
Aubrey Hillman;Mark Abbott;JunQing Yu - 通讯作者:
JunQing Yu
Mark Abbott的其他文献
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{{ truncateString('Mark Abbott', 18)}}的其他基金
Collaborative Research: A 50,000-year continuous record of the Indian Summer Monsoon from Loktak Lake, NE India
合作研究:印度东北部洛克塔克湖 50,000 年连续记录的印度夏季季风
- 批准号:
2303254 - 财政年份:2023
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
Collaborative Research: A Continuous 60,000 Year Sediment Record Documenting Abrupt to Precession-Scale Climate Change and Ecosystem Response at Fish Lake UT, Upper CO River Basin
合作研究: 60,000 年的连续沉积物记录记录了科罗拉多州上游流域鱼湖 UT 的突然进动规模的气候变化和生态系统响应
- 批准号:
2103074 - 财政年份:2021
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
Collaborative Research: RUI: Development of a 700,000 Year Record of Tropical Precipitation, Evaporation, and Temperature from Lake Junin Sediments and Regional Speleothems
合作研究:RUI:根据胡宁湖沉积物和区域洞穴形成 70 万年热带降水、蒸发和温度记录
- 批准号:
2103082 - 财政年份:2021
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
EAGER: Reconstructing the Seismic History of the Teton Fault Using Lake Sediments at Grand Teton National Park, WY
EAGER:利用怀俄明州大提顿国家公园的湖泊沉积物重建提顿断层的地震历史
- 批准号:
1546677 - 财政年份:2015
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
P2C2: Collaborative Research: Quantitative Reconstruction of Past Drought Patterns in Western North America Using Lakes, Stable Isotopes, and Modeling
P2C2:协作研究:利用湖泊、稳定同位素和建模定量重建北美西部过去的干旱模式
- 批准号:
1446283 - 财政年份:2015
- 资助金额:
$ 5.41万 - 项目类别:
Continuing Grant
Collaborative Research: Deep Drilling of Lake Junin, Peru: Continuous Tropical Records of Glaciation, Climate Change and Magnetic Field Variations Spanning the Late Quaternary
合作研究:秘鲁胡宁湖深钻:晚第四纪冰川作用、气候变化和磁场变化的连续热带记录
- 批准号:
1404113 - 财政年份:2014
- 资助金额:
$ 5.41万 - 项目类别:
Continuing Grant
EAGER: A Comparison of Lacustrine Carbonate d18O and Organic Matter dD from Drought Sensitive Lakes in the Western United States
EAGER:美国西部干旱敏感湖泊中湖相碳酸盐 d18O 和有机物 dD 的比较
- 批准号:
1346947 - 财政年份:2013
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
Collaborative Research: Towards an understanding of the Holocene paleomagnetic record through new data (Hawaii/North American) and time series/spherical harmonic model comparisons
合作研究:通过新数据(夏威夷/北美)和时间序列/球谐模型比较来了解全新世古地磁记录
- 批准号:
1215661 - 财政年份:2012
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
Collaborative research: Nonlinearities in the Arctic climate system during the Holocene
合作研究:全新世北极气候系统的非线性
- 批准号:
0908200 - 财政年份:2010
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
Collaborative Research: Spatial and Temporal Patterns of Drought in Western North America during the Holocene
合作研究:全新世北美西部干旱的时空模式
- 批准号:
0902200 - 财政年份:2009
- 资助金额:
$ 5.41万 - 项目类别:
Standard Grant
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