Collaborative Research: Strombolian eruptions, magma degassing, and hydrothermal discharge at an active submarine arc volcano

合作研究：海底弧火山的斯特龙博利式喷发、岩浆脱气和热液排放

• 批准号: 0751776
• 负责人: William Chadwick
• 金额: $ 33.03万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-02-01 至 2012-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0751776&HistoricalAwards=false
• 关键词: Collaborative; Research; Strombolian; eruptions; magma

In April 2006, extraordinary observations of a deep-sea explosive (Strombolian) volcanic eruption were made at NW Rota-1, a submarine volcano in the Mariana arc of the western Pacific. This research funds a return to the volcano to collect observational and analytical data and its subsequent on-shore data analysis and interpretation. Instruments including hydrophones, chemical sensors, current meters, and plume sensing devices will be deployed at the eruption site for one year. During the cruises, visual observations will made. A time-series collection of lava, gas and fluids at the active volcanic vent will also take place. Vent fluids and biological specimens from local hydrothermal vent sites will also be sampled. In terms of scientific impact, the research provides an opportunity to learn about volcanological process that have been impossible to study directly until now. Owing to the high viscosity of water, compared to air, closer and more specific observation and sampling of a Strombolian eruption can take place at Rota 1 than can be accomplished in subaerial settings. As a result, this work reveals critical proceses that help unravel eruptive mechanism of a highly destructive type of explosive volcanism. Broader impacts include public outreach via the media. The work also involves inter-Agency participation, an interdisciplinary inter-institutional collaboration, and the training a graduate student.

2006年4月，在西部太平洋玛丽安娜（Mariana）的一座潜艇火山NW Rota-1上对深海爆炸性（Strombolian）火山喷发进行了非凡观察。 这项研究资助了返回火山的资金，以收集观察性和分析数据及其随后的岸边数据分析和解释。 包括水音机，化学传感器，电流仪表和羽流传感设备在内的仪器将在喷发部位部署一年。 在巡航过程中，将进行视觉观察。 活动火山通风口的熔岩，气体和液体的时间序列也将发生。 还将采样来自局部热液排气位点的排气流体和生物标本。在科学影响方面，这项研究为学习火山学过程提供了一个机会，这些过程直到现在一直无法直接研究。 与空气相比，由于水的粘度高，较近的观察和更具体的观察结果以及在rota 1处进行的样本爆发，而不是在小英次地下设置中可以完成的。 结果，这项工作揭示了批判性的策略，这些过程有助于揭示高度破坏性的爆炸性火山的爆发机制。更广泛的影响包括通过媒体进行公共宣传。这项工作还涉及机构间参与，跨学科的机构间合作以及培训研究生。