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

本项目旨在记录夏威夷火山柱西部的莫纳罗亚火山的生长和长期岩浆演化，以揭示整个火山的物理、化学和时间变化。夏威夷科学钻探项目（HSDP）的研究充分记录了火山沿着羽流的Kea趋势的长期岩浆演化。在地幔柱的Loa一侧，没有类似的火山长期岩浆历史。私家侦探们建议从沿着一条1.6公里厚的熔岩序列收集的样本中获得罗亚火山一侧的岩浆记录，这些熔岩序列是由一个巨大的滑坡悬崖暴露出来的，该滑坡悬崖将莫纳罗亚火山的海底西南裂谷区剖开。他们要求获得资金，对这些部分和邻近的挖泥船的熔岩进行密集的40Ar/39Ar调查。更广泛的影响这项研究包括几个国家和国际伙伴关系以及研究生和本科生的培训。它还将提高对夏威夷火山侧翼稳定性的认识。火山侧翼的失败被认为对岛上的居民构成严重威胁。

Intellectual MeritThis 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 ImpactsThis 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.