Collaborative Research: Defining controls on incisional avulsions in alluvial basins
合作研究:确定冲积盆地切口撕脱的控制措施
基本信息
- 批准号:1124167
- 负责人:
- 金额:$ 17.11万
- 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:2011-10-01 至 2016-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Collaborative Research: Defining controls on incisional avulsions in alluvial basinsRiver avulsion occurs when water is diverted out of a river and creates a new channel on the surrounding floodplain. The associated flooding can be catastrophic for people living along rivers, but hazard mitigation is difficult because models cannot predict the timing, location, or style of river avulsion. Incisional avulsion occurs when a new river channel is established through erosion rather than deposition, and, although it is common in some river systems, this avulsion style is particularly poorly understood. The goal of this study is to define the sedimentologic and hydrodynamic conditions associated with incisional avulsions. Using combined modeling and field approaches the PIs will evaluate how characteristics such as floodplain topography, slope, ground cover, and overbank deposition control avulsion styles and test the hypothesis that incisional avulsions occur in steep fluvial systems with topographically rough, unvegetated, well-drained floodplains that lack abundant overbank suspended-sediment supply. Modeling work will be conducted with Delft3D, a physics-based numerical model that solves the equations for water flow and sediment transport, and field-data collection will focus on ancient strata where channel and floodplain characteristics can be measured for large numbers of paleoavulsion deposits.The results from this project will help improve prediction of avulsion flood hazards and will enhance understanding of the relationships between channel avulsion and floodplain erosion and deposition. Avulsion is also a primary control on the distribution of fluvial hydrocarbon, groundwater, and CO2-storage reservoirs. Better understanding of avulsion processes gained through this research will aid subsurface predictions of reservoir quality and location. Broader impacts of this work also include development of a self-paced, web-based education module about rivers and avulsions. In collaboration with the Geoscience Outreach Foundation the PIs will design a Rivers from Above curriculum comprising guided tours of rivers and avulsions using Google Earth and Google Maps. Rivers from Above will focus on river forms and patterns, river avulsion, and avulsion impacts on society. The PIs will work with the outreach offices at Penn State and Boston College to develop, pilot test, and evaluate module activities in Pittsburgh- and Boston-area schools, targeting underserved communities in each region. Finally, this proposal will also support the education and training of several graduate and undergraduate students and the early careers of two junior faculty members.
合作研究:确定冲积盆地切割崩裂的控制措施河流崩裂发生在河水改道并在周围的洪泛区形成新的河道时。相关的洪水对居住在河流沿岸的人们来说可能是灾难性的,但减灾是困难的,因为模型无法预测河流崩裂的时间、地点或类型。当新的河道通过侵蚀而不是沉积形成时,就会发生切口崩裂。尽管在某些河流系统中很常见,但人们对这种崩裂类型的了解特别少。本研究的目的是确定与切口撕脱有关的沉积学和水动力条件。通过结合建模和现场方法,pi将评估洪泛区地形、坡度、地表覆盖和岸上沉积等特征如何控制撕裂类型,并测试在地形粗糙、无植被、排水良好的洪泛区缺乏丰富的岸上悬浮沉积物供应的陡峭河流系统中发生切口撕裂的假设。建模工作将使用Delft3D进行,这是一种基于物理的数值模型,可以解决水流和沉积物运输的方程,现场数据收集将侧重于古代地层,在那里可以测量大量古崩裂沉积物的河道和洪泛平原特征。该项目的研究结果将有助于提高对崩裂洪水灾害的预测,并将加深对河道崩裂与漫滩侵蚀和沉积之间关系的认识。撕脱作用也是河流油气、地下水和二氧化碳储层分布的主要控制因素。通过这项研究获得的对撕脱过程的更好理解将有助于地下储层质量和位置的预测。这项工作的更广泛影响还包括开发一个关于河流和侵蚀的自定进度、基于网络的教育模块。在与地球科学推广基金会的合作下,pi将设计一个河流从上面的课程,包括使用谷歌地球和谷歌地图的河流和剥落的导游。河流从上面将侧重于河流的形式和模式,河流崩解和崩解对社会的影响。pi将与宾夕法尼亚州立大学和波士顿学院的外联办公室合作,在匹兹堡和波士顿地区的学校开发、试点测试和评估模块活动,针对每个地区服务不足的社区。最后,该提案还将支持几名研究生和本科生的教育和培训,以及两名初级教员的早期职业生涯。
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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Elizabeth Hajek其他文献
The Fate of Bars in Braided Rivers
辫状河中酒吧的命运
- DOI:
- 发表时间:
2024 - 期刊:
- 影响因子:0
- 作者:
S. Alpheus;Elizabeth Hajek - 通讯作者:
Elizabeth Hajek
EURASIP Journal on Applied Signal Processing 2005:7, 1082–1092 c ○ 2005 Hindawi Publishing Corporation Towards Low-Power on-Chip Auditory Processing
EURASIP 应用信号处理杂志 2005:7, 1082–1092 c ○ 2005 Hindawi Publishing Corporation 迈向低功耗片上听觉处理
- DOI:
- 发表时间:
2004 - 期刊:
- 影响因子:0
- 作者:
S. Alpheus;Elizabeth Hajek - 通讯作者:
Elizabeth Hajek
Elizabeth Hajek的其他文献
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{{ truncateString('Elizabeth Hajek', 18)}}的其他基金
Collaborative Research: Community tools for automated paleoenvironmental interpretation from sedimentary field data
合作研究:根据沉积现场数据进行自动古环境解释的社区工具
- 批准号:
1948765 - 财政年份:2020
- 资助金额:
$ 17.11万 - 项目类别:
Continuing Grant
Collaborative Research: Reconstructing paleo-sediment flux from river deposits: toward quantifying sediment discharge from bedform to basin scale
合作研究:从河流沉积物重建古沉积物通量:量化从河床形态到盆地规模的沉积物排放
- 批准号:
1935513 - 财政年份:2020
- 资助金额:
$ 17.11万 - 项目类别:
Standard Grant
CAREER: Ancient river and floodplain dynamics: a research and education plan for improving paleoenvironmental reconstructions and stratigraphic prediction
职业:古代河流和洪泛区动力学:改善古环境重建和地层预测的研究和教育计划
- 批准号:
1455240 - 财政年份:2015
- 资助金额:
$ 17.11万 - 项目类别:
Continuing Grant
Workshop: MYRES V - The Sedimentary Record of Landscape Dynamics
研讨会:MYRES V - 景观动力学的沉积记录
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1234050 - 财政年份:2012
- 资助金额:
$ 17.11万 - 项目类别:
Standard Grant
Collaborative Research: Statistical Methods for Quantifying Autogenic Processes in Sedimentary Basins
合作研究:量化沉积盆地自生过程的统计方法
- 批准号:
1024710 - 财政年份:2011
- 资助金额:
$ 17.11万 - 项目类别:
Continuing Grant
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