RAPID: The Impact of the 2009 Suwannee River Surge on the Gulf of Mexico

RAPID: 2009 年苏旺尼河暴涨对墨西哥湾的影响

基本信息

  • 批准号:
    0938249
  • 负责人:
  • 金额:
    $ 7.74万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-06-01 至 2010-05-31
  • 项目状态:
    已结题

项目摘要

The response of estuaries to extreme freshwater pulses has been mostly studied theoretically through numerical model approaches. Few observations are available to test the theories proposed by the models. This dearth of observations happens because extreme freshwater fluxes are typically associated with storms whose paths and regions of impact are uncertain until only a few hours in advance. However, extreme freshwater pulses may also develop from large precipitation pulses occurring far upstream in a river that ultimately feeds onto an estuary. This is the case developing at the Georgia-Florida border. Intense rains in Georgia have caused flood levels in the rivers that flow through Florida into the Gulf of Mexico. Such a pulse represents a unique opportunity to collect observations on the impact that it may have on an estuary and the adjacent continental shelf. In particular, this pulse will impact a relatively shallow estuary and continental shelf (mostly 5 m). New findings will likely be generated on the influence of a freshwater pulse onto a shallow shelf. Intellectual Merit: The rivers of North Florida (Santa Fe and Suwannee), according to U.S. Geological Survey forecasts, are expected to attain record flood levels in their path toward the Gulf of Mexico. The Suwannee River is expected to crest at its lower reaches, at some time between April 21 and 23, 2009. This means that there will be record freshwater pulses that will affect the estuarine area of the lower Suwannee River and dramatic buoyancy inputs to the shallow, coastal region of the northeastern continental shelf of the Gulf of Mexico. This represents a unique opportunity to address three scientific questions that can only be addressed with the influence of extreme freshwater pulses:1) does the river pulse enhance or hinders estuarine circulation?2) what is the transverse structure of the exchange flow at the estuary/ocean transition before, during and after the freshwater pulse?3) what is the shape and extent of the outflow plume?These three objectives will advance basic understanding of estuarine processes, of processes of water exchange between ocean and estuary and of plume hydrodynamics. Data will be collected in two modes: with hydrographic surveys and with moored instrumentation. Surveys will examine the plume characteristics on the inner continental shelf and will include towing an acoustic Doppler current profiler and a surface temperature-salinity sensor. Surveys will also include profiles of temperature and salinity and will be targeted to characterize the extent and shape of the plume, as well as the stratification and flow characteristics associated with it. Also to determine the temporal reach of the plume influence, current profilers will be deployed (moored) in the estuary, at the ocean/estuary transition and over the inner shelf. These instruments are expected to address questions 1) and 2). They will be deployed before the river pulse arrives at the lower estuary and will remain moored for a month. These instruments are expected to record the horizontal and vertical characteristics of the plume and how those characteristics change over time. Broader Impacts: This project will support and train one graduate student at the University of Florida and will involve the participation of at least 5 others in the field work. They will all become well versed in the operation of state-of-the-art oceanographic equipment. The results should be innovative enough to produce publishable manuscripts.
河口对极端淡水脉冲的响应主要是通过数值模型方法进行理论研究。很少有观测结果可以用来检验模型提出的理论。这种缺乏观测的情况发生,因为极端的淡水通量通常与风暴有关,风暴的路径和影响区域在几个小时之前都是不确定的。然而,极端的淡水脉冲也可能是由发生在河流上游的大量降水脉冲发展而来的,这些降水脉冲最终流入河口。这是在佐治亚州和佛罗里达州边境发生的情况。格鲁吉亚的强降雨导致流经佛罗里达进入墨西哥湾的河流洪水泛滥。这种脉动是一个独特的机会,可以收集关于它可能对河口和邻近大陆架产生的影响的意见。特别是,这种脉冲将影响一个相对较浅的河口和大陆架(主要是5米)。新的发现可能会产生的影响,淡水脉冲到一个浅架。智力优势:根据美国地质调查局的预测,北佛罗里达的河流(圣达菲和苏瓦尼)在流向墨西哥湾的过程中,预计将达到创纪录的洪水水位。苏瓦尼河预计将在2009年4月21日至23日之间的某个时候在下游达到顶峰。这意味着将有创纪录的淡水脉冲,将影响下游Suwannee河的河口地区和戏剧性的浮力输入到墨西哥湾东北大陆架的浅水,沿海地区。这代表了一个独特的机会来解决三个科学问题,这些问题只能通过极端淡水脉冲的影响来解决:1)河流脉冲是否会增强或阻碍河口环流?2)在淡水脉动之前、期间和之后,河口/海洋过渡区交换流的横向结构是什么?3)流出羽流的形状和范围为何?这三个目标将促进河口过程,海洋和河口之间的水交换过程和羽流流体动力学的基本理解。将以两种方式收集数据:水文测量和系泊仪器。调查将检查内大陆架的羽流特征,并将包括拖曳声学多普勒海流剖面仪和表面温度-盐度传感器。调查还将包括温度和盐度剖面图,并将以确定羽流的范围和形状以及与之相关的分层和流动特征为目标,还将在河口、海洋/河口过渡区和内大陆架部署(停泊)海流剖面仪,以确定羽流影响的时间范围。预计这些文书将处理问题1)和2)。它们将在河流脉冲到达下游河口之前部署,并将停泊一个月。预计这些仪器将记录烟羽的水平和垂直特征以及这些特征如何随时间变化。更广泛的影响:该项目将支持和培训佛罗里达大学的一名研究生,并将涉及至少5名其他人参与实地工作。他们都将精通最先进的海洋设备的操作。研究结果应该具有足够的创新性,以产生可编辑的手稿。

项目成果

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Arnoldo Valle-Levinson其他文献

Lateral variability of flow over a sill in a channel of southern Chile
  • DOI:
    10.1007/s10236-006-0077-y
  • 发表时间:
    2006-04-20
  • 期刊:
  • 影响因子:
    1.900
  • 作者:
    Mario Cáceres;Arnoldo Valle-Levinson;Carlos Molinet;Manuel Castillo;Monica Bello;Carlos Moreno
  • 通讯作者:
    Carlos Moreno
Fortnightly switching of residual flow drivers in a tropical semiarid estuary
  • DOI:
    10.1016/j.ecss.2015.12.008
  • 发表时间:
    2016-02-05
  • 期刊:
  • 影响因子:
  • 作者:
    Arnoldo Valle-Levinson;Carlos A.F. Schettini
  • 通讯作者:
    Carlos A.F. Schettini
Variations in turbulent kinetic energy at a point source submarine groundwater discharge in a reef lagoon
  • DOI:
    10.1007/s10236-014-0765-y
  • 发表时间:
    2014-09-16
  • 期刊:
  • 影响因子:
    1.900
  • 作者:
    Sabrina M. Parra;Ismael Mariño-Tapia;Cecilia Enriquez;Arnoldo Valle-Levinson
  • 通讯作者:
    Arnoldo Valle-Levinson
Depth-dependent overtides from internal tide reflection in a glacial fjord
  • DOI:
    10.1007/bf02782973
  • 发表时间:
    2007-02-01
  • 期刊:
  • 影响因子:
    2.300
  • 作者:
    Arnoldo Valle-Levinson;José Luis Blanco;Maximo Frangópulos
  • 通讯作者:
    Maximo Frangópulos
Upwelling-triggered near-geostrophic recirculation in an equatorward facing embayment
  • DOI:
    10.1016/j.csr.2011.10.002
  • 发表时间:
    2011-12-01
  • 期刊:
  • 影响因子:
  • 作者:
    Julio Moraga-Opazo;Arnoldo Valle-Levinson;Marcel Ramos;Matías Pizarro-Koch
  • 通讯作者:
    Matías Pizarro-Koch

Arnoldo Valle-Levinson的其他文献

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{{ truncateString('Arnoldo Valle-Levinson', 18)}}的其他基金

Intergovernmental Mobility Assignment (1/04/21 - 1/03/22)
政府间流动分配(1/04/21 - 1/03/22)
  • 批准号:
    2133200
  • 财政年份:
    2021
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Intergovernmental Personnel Award
Semidiurnal Perturbations to Storm Surges on the U.S. Eastern Seaboard
美国东海岸风暴潮的半日扰动
  • 批准号:
    1332718
  • 财政年份:
    2013
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
Reversing circulation structure in arid, tropical estuaries
扭转干旱热带河口的环流结构
  • 批准号:
    1157675
  • 财政年份:
    2012
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
Collaborative Proposal: Impact of secondary circulation and mixing of estuarine exchange flows.
合作提案:二次循环和河口交换流混合的影响。
  • 批准号:
    0825876
  • 财政年份:
    2008
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
Collaborative Research: Asymmetric Circulation in Wind-Driven Bays
合作研究:风驱动海湾的不对称环流
  • 批准号:
    0726697
  • 财政年份:
    2007
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
Pan-American Advanced Studies Institutes (PASI): Contemporary Issues in Estuarine Physics, Transport, and Water Quality: Puerto Morelos, Mexico; July 2007
泛美高级研究所 (PASI):河口物理、运输和水质的当代问题:墨西哥莫雷洛斯港;
  • 批准号:
    0614418
  • 财政年份:
    2006
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
Collaborative Research: Asymmetric Circulation in Wind-Driven Bays
合作研究:风驱动海湾的不对称环流
  • 批准号:
    0551923
  • 财政年份:
    2005
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
CAREER: On the Hydrodynamics of the Subtidal Exchange Between Estuaries and Their Adjacent Waters
职业:河口及其邻近水域之间潮下交换的流体动力学
  • 批准号:
    0551924
  • 财政年份:
    2005
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Continuing Grant
Collaborative Research: Asymmetric Circulation in Wind-Driven Bays
合作研究:风驱动海湾的不对称环流
  • 批准号:
    0425147
  • 财政年份:
    2004
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Standard Grant
CAREER: On the Hydrodynamics of the Subtidal Exchange Between Estuaries and Their Adjacent Waters
职业:河口及其邻近水域之间潮下交换的流体动力学
  • 批准号:
    9983685
  • 财政年份:
    2000
  • 资助金额:
    $ 7.74万
  • 项目类别:
    Continuing Grant

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