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，对位于西太平洋马里亚纳弧的一座海底火山 NW Rota-1 的深海爆炸性（Strombolian）火山喷发进行了非凡的观测。 这项研究资助返回火山收集观测和分析数据以及随后的岸上数据分析和解释。 水听器、化学传感器、海流计和羽流传感装置等仪器将在喷发现场部署一年。 在巡航期间，将进行目视观察。 还将在活火山口按时间顺序收集熔岩、气体和液体。 还将对当地热液喷口地点的喷口流体和生物样本进行采样。就科学影响而言，这项研究提供了了解迄今为止无法直接研究的火山过程的机会。 由于水的粘度比空气高，因此在 Rota 1 可以对斯特龙博利火山喷发进行比在地面环境中更近距离、更具体的观察和采样。 因此，这项工作揭示了有助于揭示高度破坏性的爆发性火山活动的喷发机制的关键过程。更广泛的影响包括通过媒体进行公众宣传。这项工作还涉及机构间的参与、跨学科的机构间合作以及研究生的培训。