Collaborative Research: EAR-Climate: Linkages Between Glacio-climatic, Hydrothermal, and Volcanic Processes in the Central Andes

合作研究：EAR-气候：安第斯山脉中部冰川气候、热液和火山过程之间的联系

• 批准号: 2143534
• 负责人: Michael Kaplan
• 金额: $ 27.42万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-05-01 至 2025-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2143534&HistoricalAwards=false
• 关键词: Collaborative; Research; EAR; Climate; Linkages

While volcanic and hydrological responses to glacial activity have been documented around the globe, the response of hydrothermal systems remains largely unstudied. Important questions to be addressed include: How do hydrological, hydrothermal and/or volcanic systems respond to climate change and glacier expansion and retreat? What are the timing and mechanisms that control these responses? Answering these questions has significant impacts on hazard assessments (phreatic eruptions and hydrothermal explosions), geothermal exploration, and mineral deposits. El Tatio volcanic-hydrothermal system, Central Andes, provides an ideal natural laboratory to investigate these interactions. El Tatio has been active since the last deglaciation and preserves exceptional morpho-stratigraphic evidence of volcanic, glacial, and hydrothermal activity. Unlike past studies, focusing on large continental ice masses during the Last Glacial Maximum, El Tatio experienced smaller alpine or mountain glaciations. That configuration is more representative of the world-wide distribution of glaciers and the processes occurring due to modern climate change. Led by an early career Latino-woman, this project will intensify collaborations with Chilean Universities, and will engage historically marginalized native communities who own the land.This project will use an interdisciplinary approach that brings together experts from different US institutions and Chile, which propose to address the following: (i) to establish spatial and temporal linkages between glacier fluctuations including deglaciation and the onset of hydrothermal and/or volcanic activity by constraining the field distribution and timing of different events; and (ii) to make quantitative estimation of the hydrothermal responses to glacial unloading, changes in water and heat supply using field data (ages and estimation of ice thickness) and numerical models of multiphase flow and deformation in heterogeneous porous media. Results from this study will provide a better understanding of the interrelated and competing controls of hydrothermal responses (for example, glacier distribution, thickness, and rates of advance/recession; rheology; permeability; and reservoir depth).This project is jointly funded by the Hydrologic Sciences Program, the Geomorphology and Land Use Dynamics Program, and the Petrology and Geochemistry Program.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

尽管在全球范围内已经记录了对冰川活性的火山和水文反应，但热液系统的响应仍然很大程度上没有研究。要解决的重要问题包括：水文，水热和/或火山系统如何应对气候变化以及冰川扩张和撤退？控制这些响应的时间和机制是什么？回答这些问题对危害评估（漏洞爆发和热液爆炸），地热勘探和矿藏具有重大影响。埃尔塔蒂奥（El Tatio）火山热热系统，安第斯山脉中部，提供了一个理想的自然实验室来研究这些相互作用。 El Tatio自上次脱气以来一直处于活跃状态，并保留了火山，冰川和热液活性的特殊形态 - 地层学证据。与过去的研究不同，在最后一次冰川最大值期间着重于大陆冰块，El Tatio经历了较小的高山或山地冰川。这种配置更代表冰川的全球分布以及由于现代气候变化而发生的过程。 Led by an early career Latino-woman, this project will intensify collaborations with Chilean Universities, and will engage historically marginalized native communities who own the land.This project will use an interdisciplinary approach that brings together experts from different US institutions and Chile, which propose to address the following: (i) to establish spatial and temporal linkages between glacier fluctuations including deglaciation and the onset of hydrothermal and/or通过限制不同事件的场分布和时机来限制火山活动； （ii）对冰川卸载的水热反应进行定量估计，使用现场数据（年龄和冰厚度的年龄和估计）以及多相流的数值模型以及异质多孔培养基的变形。这项研究的结果将更好地了解水热反应的相互关联和竞争的控制（例如，冰川分布，厚度，厚度和预后/衰退的速率；流变学；渗透性；和储层深度）。该项目由该项目共同资助由水文学奖和土地使用动态学计划，以及彼得的动态学计划，以及彼得的彼得。法定任务，并被认为是值得通过基金会的智力优点和更广泛影响的审查标准来评估的值得支持的。