SGER: Deep Magmatic Plumbing of the Lower Crust and Uppermost Mantle at the East Pacific Rise at 9 50'N by 3D Multichannel Seismics

SGER：北纬 9 点 50 分东太平洋海隆下地壳和上地幔的深层岩浆管道，通过 3D 多道地震进行

• 批准号: 0624401
• 负责人: Mladen Nedimovic
• 金额: --
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0624401&HistoricalAwards=false
• 关键词: SGER; Deep; Magmatic; Plumbing; Lower

This project will enhance both the scientific and technical aspects of a 3D multichannel seismic survey to be carried out by other investigators at 9 degrees 50 minutes north latitude on the East Pacific Rise (EPR) in 2007 and provides a timely, innovative approach for preparing for such 3D studies. Researchers will develop new design criteria for the EPR seismic survey, which will be the first 3D seismic study to be conducted by the R/V Langseth. This research project will ensure that the collected seismic data will not only image the original targets of the funded cruise, but also constrain the nature of the Moho transition, where the principal investigator's recent research has shown unexpected indications of magma that is part of a complex, deep plumbing system beneath some mid-ocean ridges. This project will also undertake several technical tasks associated with optimizing bin infill during the seismic surveying, conducting preliminary processing of data in nearly real-time aboard the ship, and completing state-of-the-art post-cruise data analyses that were not planned at the time the original cruise was funded. Broader impacts of the project include enhancement of a funded RIDGE2000 study at the EPR and establishment of protocols to guide the user community in designing academic 3D seismic surveys on the R/V Langseth. In addition, the project will support a young scientist and a graduate student in the poorly populated discipline of marine reflection seismology at mid-ocean ridges.

该项目将加强其他调查人员将于2007年在北纬9度50分东太平洋海隆进行的三维多通道地震调查的科学和技术方面，并为筹备这种三维研究提供及时的创新方法。 研究人员将为EPR地震勘探开发新的设计标准，这将是R/V Langseth进行的第一次三维地震研究。 这一研究项目将确保收集的地震数据不仅能对受资助的巡航的原始目标进行成像，而且还能限制莫霍过渡的性质，主要研究人员最近的研究显示，在莫霍过渡中，有意想不到的迹象表明，岩浆是一些洋中脊下复杂的深层管道系统的一部分。 该项目还将承担若干技术任务，包括在地震勘测期间优化仓填充，在船上近乎实时地进行数据初步处理，以及完成最初资助巡航时未计划的最先进的巡航后数据分析。 该项目的更广泛影响包括加强EPR的一项受资助的RIDGE 2000研究，并制定协议，指导用户群体设计R/V Langseth的学术三维地震调查。 此外，该项目还将支助一名青年科学家和一名研究生从事人口稀少的大洋中脊海洋反射地震学学科。