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

本研究的主要目的是确定在Waipaoa外陆架盆地中发现的全新世中晚期海洋地层记录的性质和分辨率，以及土地利用和海洋/气候变化。支持者认为，陆架盆地泥存款将被证明是有用的，记录在邻近的陆地环境，包括一个显着的2250年的记录，从湖泊记录的主要洪水事件，以及中全新世和历史扰动的沉积物输入，驱动厄尔尼诺现象，火山活动，构造和欧洲森林砍伐的变化。为了提取这些信息，PI将对Waipaoa陆架泥存款进行高分辨率（Chirp）反射和侧扫调查，沿着进行有针对性的振动取芯工作，以确定存款的全新世地层记录。表层沉积物将收集箱和卡斯滕核心比较历史的沉积物分散模式与那些占主导地位的较长（全新世）的时间尺度。

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.