New Approaches to Unraveling the Climatic and Sea-Level History of the Northwestern Gulf of Mexico

揭示墨西哥湾西北部气候和海平面历史的新方法

• 批准号: 0921963
• 负责人: Anna Cruse
• 金额: $ 23.75万
• 依托单位: Oklahoma State University
• 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: 2009-10-01 至 2012-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0921963&HistoricalAwards=false
• 关键词: New; Approaches; Unraveling; Climatic; Sea

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).New Approaches to Unraveling the Climatic and Sea-Level History of the Northwestern Gulf of MexicoAlexander Simms, Anna M Cruse, Regina KalchgruberEAR-0921963Oklahoma State UniversityABSTRACTRecent hurricanes such as Katrina and Ike have reminded policy makers and planners of the susceptibility of coastal communities to natural forces such as storms, climate change, subsidence, and eustatic sea-level rise. Around 2,600 years ago, several estuaries along the Gulf Coast underwent a period of rapid change. The continued debate concerning the nature of sea-level change over the last 5,000 years, coupled with the lack of century-scale records of climate change, leaves the cause of this event unclear. This project will use two methods of sea-level and climate reconstructions not previously used in Gulf of Mexico studies to provide tighter constraints on the sea-level and climate history of the northwestern Gulf of Mexico over the last 5,000. This new data will help determine if the reorganization of the Gulf Coast estuaries was caused by a change in climate or an increase in the rate of sea-level rise 2,600 years ago. In addition to determining the cause of this event, these new records will provide tighter constraints on the background rates of sea-level rise within the Gulf of Mexico, which may provide some new insights into the amount of subsidence that is occurring along this coastline. The new data will also provide a longer record of century-scale drought than currently exists for the south-central USA. This project supports one graduate and one undergraduate student who will help conduct this research.

该奖项由2009年美国复苏和再投资法案(公法111-5)资助。揭示墨西哥湾西北部气候和海平面历史的新方法Alexander Simms，Anna M Cruse，Regina KalchgruberEAR-0921963俄克拉荷马州立大学最近的飓风，如卡特里娜和艾克，提醒了政策制定者和规划者沿海社区对风暴、气候变化、下沉和海平面上升等自然力量的敏感性。大约2600年前，墨西哥湾沿岸的几个河口经历了一段快速变化的时期。关于过去5000年来海平面变化的性质的持续辩论，加上缺乏百年尺度的气候变化记录，使这一事件的原因变得不清楚。该项目将使用两种以前没有在墨西哥湾研究中使用的海平面和气候重建方法，以更严格地限制过去5,000年来墨西哥湾西北部的海平面和气候历史。这一新数据将有助于确定墨西哥湾沿岸河口的重组是由2600年前气候变化或海平面上升速度加快引起的。除了确定这一事件的原因外，这些新的记录还将对墨西哥湾内海平面上升的背景速率提供更严格的限制，这可能为了解这一海岸线正在发生的沉降量提供一些新的见解。新的数据还将提供比目前美国中南部地区更长的百年干旱记录。该项目支持一名研究生和一名本科生，他们将帮助进行这项研究。