Collaborative Research - Resolution of the Stratigraphic Record for a High Input, Collision-Margin Shelf Basin: The MARGINS Waipaoa Focus Area

合作研究 - 高输入、碰撞边缘陆架盆地地层记录的解析：MARGINS Waipaoa 重点领域

• 批准号: 0405524
• 负责人: Steven Kuehl
• 金额: --
• 依托单位: College of William & Mary Virginia Institute of Marine Science
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0405524&HistoricalAwards=false
• 关键词: Collaborative; Research; Resolution; Stratigraphic; Record

The major objective of this study is to determine the nature and resolution of the Mid-Late Holocene marine stratigraphic record found in the shelf basin off the Waipaoa with respect to land use and oceanographic/climate changes. The proponents suggest that the shelf basin mud deposit will prove useful in recording well-documented changes in the adjacent terrestrial environment, including a remarkable 2250-year record of major flood events from lake records, as well as Mid-Holocene and Historical perturbations in sediment input, driven by ENSO, volcanism, tectonics and European deforestation. To extract this information, the PIs will conduct high-resolution (Chirp) reflection and sidescan surveys of the Waipaoa shelf mud deposit, along with targeted vibra-coring efforts to determine the Holocene stratigraphic record of the deposit. Surface sediment will be collected with box and kasten cores to compare historical sediment dispersal patterns with those that dominate over longer (Holocene) timescales.

本研究的主要目的是确定在外保阿外陆架盆地发现的全新世中晚期海洋地层记录在土地利用和海洋学/气候变化方面的性质和分辨率。支持者认为，陆架盆地泥浆沉积物将有助于记录邻近陆地环境的有据可查的变化，包括湖泊记录中 2250 年重大洪水事件的显着记录，以及沉积物中全新世中期和历史扰动输入，由 ENSO、火山活动、构造和欧洲森林砍伐驱动。为了提取这些信息，PI 将对 Waipaoa 陆架泥矿床进行高分辨率（Chirp）反射和侧扫调查，并进行有针对性的振动取芯工作，以确定该矿床的全新世地层记录。表面沉积物将通过箱芯和卡斯滕岩心收集，以将历史沉积物扩散模式与在较长（全新世）时间尺度上占主导地位的模式进行比较。