Collaborative Research: Temporal evolution of submarine Mauna Loa provides insights into the nature of the Hawaiian plume

合作研究：莫纳罗亚潜艇的时间演化提供了对夏威夷羽流性质的见解

• 批准号: 0825659
• 负责人: Bradley Singer
• 金额: $ 10.29万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0825659&HistoricalAwards=false
• 关键词: Collaborative; Research; Temporal; evolution; submarine

Intellectual Merit This project seeks to document the growth and long-term magmatic evolution of Mauna Loa volcano on the western, Loa side of the Hawaii plume to reveal physical, chemical, and temporal variations across its entirety. The long-term magmatic evolution of a volcano along the Kea trend of the plume has been well-documented by the Hawaii Scientific Drilling Project (HSDP) studies. There is no comparable long-term magmatic history of a volcano on the Loa side of the plume. The P.I.s propose to obtain a magmatic record for the Loa side from samples that have been collected along a 1.6 km thick sequence of lavas exposed by a giant landslide scarp that dissects Mauna Loa's submarine south-west rift zone. They request funding to undertake an intensive 40Ar/39Ar investigation of lavas from these sections and adjacent dredge hauls. Broader Impacts This study includes several national and international partnerships and the training of graduate and undergraduate students. It also will improve understanding of the stability of the flanks of Hawaii volcanoes. Failure of the flanks of volcanoes is thought to pose a serious hazard to the population of the islands.

学术价值该项目旨在记录夏威夷羽流西侧莫纳罗亚火山的生长和长期岩浆演化，以揭示其整体的物理、化学和时间变化。夏威夷科学钻探项目 (HSDP) 的研究详细记录了火山沿凯阿羽流趋势的长期岩浆演化。在羽流的洛阿一侧，没有类似的火山长期岩浆历史。 P.I. 提议从沿着 1.6 公里厚的熔岩序列收集的样本中获取洛阿一侧的岩浆记录，这些熔岩序列是由一条巨大的山体滑坡陡坡所暴露出来的，该陡坡将莫纳罗亚的海底西南裂谷带剖开。他们请求资金对这些区域和邻近挖泥船的熔岩进行深入的 40Ar/39Ar 调查。更广泛的影响 这项研究包括多个国家和国际合作伙伴关系以及研究生和本科生的培训。它还将增进对夏威夷火山侧翼稳定性的了解。人们认为火山侧翼的崩溃会对岛上的居民造成严重危害。