Oceanic Crustal Structure of the NE Hawaiian Arch

本提案旨在对夏威夷拱进行地球物理调查，以表征地壳和地幔-地幔边界（莫霍）结构，这是国际莫霍钻井项目的三个候选地点之一（大多数人认为是主要的）。该项目是与日本科学资助机构JAMSTEC合作的。这个项目的几乎所有资金都来自JAMSTEC。π吗?美国正在寻求船只的时间和资金，以便进行一次考察，以恢复在项目开始时部署的海底地震仪。特别令人感兴趣的是，是否有证据表明，与附近夏威夷群岛热点有关的岩浆被注入了感兴趣的地区。如果是这样，这将是一个不适合钻探的地点。更为普遍的科学兴趣将是为成熟的快速扩张的海洋地壳和与夏威夷火山负荷有关的地壳翘曲特征建立的参考部分。地震数据将立即提供给学术地震门户网站，从而提供给任何希望进一步解释或处理数据的研究者。研究生参与船上工作和数据分析。这是美国对一个大型的、非常引人注目的国际项目的贡献（成本非常低）。

This proposal seeks to conduct a geophysical survey of the Hawaiian arch to characterize crust and mantle-mantle boundary (Moho) structure for one of three (and, by most accounts, the leading) candidate sites for the international Moho drilling project. This project is a collaboration with JAMSTEC, the Japanese cience funding agency. Almost all funding for this project is coming from JAMSTEC. The PI?s are seeking ship time and funding for an expedition to recover ocean bottom seismometers deployed at the beginning of the project. Of special interest is whether or not there is evidence for magmas related to the nearby Hawaiian Islands hot spot having been injected into the region of interest. If so, this will be an unsuitable site for drilling. Of more general scientific interest will be the reference section established for mature fast-spread ocean crust and characterization of crustal warping related to loading by the Hawaiian Volcanos. The seismic data will be immediately provided the data to the Academic Seismic Portal and, hence, to any investigator who wishes to further interpret or process the data. Graduate students are involved in both shipboard work and data analysis. This is a US contribution (at very moidest cost) to a large, highly visible international project.