RAPID: Mississippi Flood of 2011 - Investigation of Initial Impact on the Landscape

RAPID：2011 年密西西比州洪水 - 对景观的初步影响的调查

• 批准号: 1140198
• 负责人: Praveen Kumar
• 金额: $ 5.92万
• 依托单位: University of Illinois at Urbana-Champaign
• 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: 2011-06-15 至 2013-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1140198&HistoricalAwards=false
• 关键词: RAPID; Mississippi; Flood; 2011; Investigation

RAPID: Mississippi Flood of 2011 - Investigation of Initial Impact on the LandscapeEAR-1140198Praveen Kumar, Gary Parker, Jim Best, Marcelo Garcia, Bruce Rhoads, Michelle Wander, Jeff Nittrouer, Robert Darmody, Arthur Schmidt, Murugesu Sivapalan, Jonathan Greenberg (Univ. of California, Davis), Robert Holmes (USGS)AbstractThe objective of the proposed Rapid Response Research grant is to undertake field campaign, in-situ sampling, and Lidar survey of selected regions of the Lower Mississippi River and surrounding landscape impacted by the 2011 extreme flood. PIs interest is to understand how deliberate but uncontrolled levee breach at Birds Point, and engineered diversions at Morganza and Bonnet Carré spillways impact both the streams and the surrounding landscapes. In the proposed effort they plan to (1) characterize flood deposits by sampling sediment depth, depositional area, and sediment grain size distribution and stratigraphy; (2) investigate soil morphology and their properties such as soil organic carbon, pH, cation exchange capacity, texture, and bulk density; (3) characterize response of landscape form and structure at all three offtake sites by characterizing the bathymetry, flow, and sediment transport; and (4) evaluate landscape impact through Lidar survey near and downstream of the Mississippi and Ohio River Confluence including large sections of the Birds Point New Madrid (BPNM) floodway. The data collected will allow them to assess if large episodic events, such as the present Mississippi flood, shape the long-term form and function of rivers and the surrounding floodplains, and the timescale of the impact on the flow and transport dynamics. Studies using this data will assist in future planning of water and sediment diversions in the lower Mississippi River basin.

RAPID：2011 年密西西比州洪水 - 对景观的初步影响调查EAR-1140198Praveen Kumar、Gary Parker、Jim Best、Marcelo Garcia、Bruce Rhoads、Michelle Wander、Jeff Nittrouer、Robert Darmody、Arthur Schmidt、Murugesu Sivapalan、Jonathan Greenberg（大学）加利福尼亚州戴维斯）罗伯特·霍姆斯（美国地质调查局）摘要拟议的快速反应研究拨款的目标是进行项目负责人对受 2011 年极端洪水影响的密西西比河下游选定区域和周边景观进行了现场调查、现场采样和激光雷达调查，以了解 Birds Point 的堤坝溃决以及 Morganza 和 Morganza 的改道工程是如何小心谨慎但不受控制的。 Bonnet Carré 溢洪道影响河流和周围景观，他们计划 (1) 通过沉积物深度、沉积面积和沉积物粒度分布和地层学来表征洪水沉积物；调查土壤形态及其特性，如土壤有机碳、pH、阳离子交换容量、质地和容重；(3) 通过测深、流量和沉积物迁移来表征所有三个排放点景观形态和结构的响应； (4) 通过激光雷达调查评估密西西比河和俄亥俄河交汇处附近和下游的景观影响，包括新马德里鸟点 (BPNM) 泄洪道的大部分区域。收集的数据将使他们能够评估是否发生大型事件，例如洪水。现在的密西西比河洪水，塑造了河流和周围洪泛区的长期形态和功能，以及对流量和运输动态影响的时间尺度，使用这些数据的研究将有助于密西西比河流域下游的水和泥沙分流的未来规划。