SGER: Stratigraphy, Sedimentology, Microfossil Content and Preservation of Hurricane Ike Storm Surge Deposits in Southeast Texas and Southwest Louisiana.

SGER：德克萨斯州东南部和路易斯安那州西南部的飓风艾克风暴潮沉积物的地层学、沉积学、微化石含量和保护。

• 批准号: 0854972
• 负责人: Harry Williams
• 金额: $ 1.22万
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-12-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0854972&HistoricalAwards=false
• 关键词: SGER; Stratigraphy; Sedimentology; Microfossil; Content

This project will study the effects of the storm surge of Hurricane Ike in southeast Texas and southwest Louisiana. Specifically, the research will examine the sediments resulting from the surge, and their distribution within the coastal environment. By comparing these deposits to similar sediments from Hurricanes Katrina and Rita, this project will provide quantitative estimates of the significance of these extreme events in reshaping the coastal environment. The project will collect sediment cores from lakes that had already been sampled prior to the hurricane landfall. Comparison of pre- and post-hurricane deposits will provide a very clear picture of the exact nature of sediments and microfossils that were transported onto the lake beds, before this evidence is potentially obscured by bioturbation. It will also provide a baseline for identifying hurricane deposits that have occurred in the region over the past several hundred years.The results of the study will contribute to a better understanding of the effects of storm surge on the coastal environment.These include more reliable assessments of the recurrence interval of hurricane strikes and associated hurricane risk, an improved record of the the geographic variability of hurricane strikes along at-risk coastlines; and the documentation of prehistoric hurricane activity that can be used to assess the relationship between the frequency and strength of hurricanes and climate change.

该项目将研究飓风艾克风暴潮对德克萨斯州东南部和路易斯安那州西南部的影响。具体而言，研究将检查由激增产生的沉积物及其在沿海环境中的分布。通过将这些沉积物与卡特里娜飓风和丽塔飓风的类似沉积物进行比较，该项目将对这些极端事件在重塑沿海环境方面的重要性进行定量估计。该项目将收集飓风登陆前已经取样的湖泊沉积物芯。飓风前和飓风后沉积物的比较将提供一个非常清晰的画面，沉积物和微体化石的确切性质，被运到湖床，在此之前的证据可能被生物扰动掩盖。研究结果将有助于更好地了解风暴潮对沿海环境的影响，包括更可靠地评估飓风袭击的重复间隔和相关的飓风风险，更好地记录飓风袭击沿着危险海岸线的地理变异性;记录史前飓风活动，可用于评估飓风频率和强度与气候变化之间的关系。