Oceanic Crustal Structure of the NE Hawaiian Arch

夏威夷东北拱门的海洋地壳结构

• 批准号: 1355468
• 负责人: Gregory Moore
• 金额: $ 7.12万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-12-15 至 2017-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1355468&HistoricalAwards=false
• 关键词: Oceanic; Crustal; Structure; NE; Hawaiian

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.

该提议旨在对夏威夷拱进行地球物理调查，以确定国际莫霍面钻探项目三个候选地点之一（大多数情况下是最主要的）的地壳和地幔-地幔边界（莫霍面）结构。该项目是与日本科学资助机构JAMSTEC合作的。该项目的所有资金几乎都来自JAMSTEC。私家侦探？美国正在为一次探险寻找船期和资金，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注入了感兴趣的地区。如果是这样的话，这将是一个不适合钻探的地点。具有更广泛科学意义的将是为成熟的快速扩展的洋壳和与夏威夷火山负荷有关的地壳翘曲特征而建立的参考剖面。地震数据将立即提供给学术地震门户网站，并因此提供给任何希望进一步解释或处理数据的研究人员。研究生参与船上工作和数据分析。这是美国对一个大型、高度可见的国际项目的贡献（成本非常低）。