Central Atlantic Lithosphere-Asthenosphere Boundary Study

中大西洋岩石圈-软流圈边界研究

• 批准号: 1536400
• 负责人: Steven Constable
• 金额: $ 62.76万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-15 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1536400&HistoricalAwards=false
• 关键词: Central; Atlantic; Lithosphere; Asthenosphere; Boundary; Central; Atlantic; Lithosphere; Asthenosphere; Boundary

Part 1The award will enable the U.S. scientists to join a large, multi-institution, multi-disciplinary European project to collect geophysical data in the mid-Atlantic Ocean to study the lithosphere-asthenosphere boundary (LAB) in the deep Earth. European scientists will deploy instruments to collect earthquake and related data. With funds from this proposal, the US scientists will deploy electro-magnetic instruments, and all of the types of data to be gathered will allow imaging the LAB at different length scales. The impact of this research will be far reaching, both in the scientific as well as in the technical domain. The results would help in resolving an important scientific controversy about the lithosphere and shed light on the thermal structure of oceanic mantle. Outreach is planned at Scripps? Birch Aquarium and student support is also included.Part 2This project is to allow the U.S. PIs to join a large, multi-institution, multi-disciplinary European initiative to collect geophysical data in the mid-Atlantic to characterize the lithosphere-asthenosphere boundary (LAB) as a function of age. European collaborators will deploy 30 OBS for a year to collect teleseismic, surface wave, and receiver function data. In addition, deep seismic reflection data will be acquired by Schlumberger using state-of-the-art industry equipment on a continuous profile along a stream-line from the mid-Atlantic to 100 My crust. Under funding from this proposal, the PIs plan to deploy 40 Scripps broadband MT instruments at OBS sites. Satish Singh of IPGP has already secured funding for the seismic reflection study, as well as a commitment from Schlumberger. Catherine Rychert and Nicholas Harmon of University of Southampton have secured funding for the passive seismic deployments, as well as ship time. The MT deployments and recoveries will piggy-back the Southampton experiment, but data will be integrated across the three studies. The results would help in resolving an important scientific controversy about the lithosphere and shed light on the thermal structure of oceanic mantle. Outreach is planned at Scripps' Birch Aquarium and student support is also included.

第1部分奖项将使美国科学家能够加入一个大型，多学科的欧洲项目，以收集大西洋中部的地球物理数据，以研究深层地球的岩石圈 - 心理圈边界（LAB）。欧洲科学家将部署工具来收集地震和相关数据。有了该提案的资金，美国科学家将部署电磁仪器，并且要收集的所有数据类型都将允许以不同的长度尺度对实验室进行成像。这项研究的影响将在科学领域和技术领域中遥遥无期。结果将有助于解决有关岩石圈的重要科学争议，并阐明海洋幔的热结构。 Scripps计划外展活动吗？桦木水族馆和学生的支持也包括在第2部分，该项目是允许美国PIS加入大型，多学科的欧洲倡议，以在大西洋中部收集地球物理数据，以表征岩石圈 - asthenosphere界边界（实验室）作为年龄的功能。欧洲合作者将在一年内部署30个观察员，以收集远距离震动，表面波和接收器功能数据。此外，Schlumberger将使用最先进的行业设备在从大西洋中部到100我的地壳上的河流线上使用最先进的行业设备，从而使用最先进的行业设备来获取深层地震反射数据。在此提案的资助下，PIS计划在观察站部部署40个Scripps宽带MT仪器。 IPGP的Satish Singh已经为地震反思研究提供了资金，以及Schlumberger的承诺。南安普敦大学的凯瑟琳·瑞奇特（Catherine Rychert）和尼古拉斯·哈蒙（Nicholas Harmon）为被动地震部署以及船舶时间获得了资金。 MT的部署和恢复将使南安普敦实验中的折磨，但数据将在这三项研究中整合。结果将有助于解决有关岩石圈的重要科学争议，并阐明海洋幔的热结构。计划在Scripps的桦木水族馆计划进行外展，还包括学生的支持。