On the geochemistry of volcanic gases and fluids from the Unzen volcano - ICDP-Unzen-Conduit-Drilling

云仙火山气体和流体的地球化学 - ICDP-Unzen-Conduit-Drilling

• 批准号: 5364204
• 负责人: Dr. Martin Zimmer
• 金额: --
• 依托单位: Sektion 3.1: Anorganische und Isotopengeochemie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2004-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5364204?language=en
• 关键词: geochemistry; volcanic; gases; fluids; Unzen

Within the framework of the ICDP Unzen Drilling Project we plan to analyse, on a continuous basis, the gas phase dissolved in the drill mud. The Unzen-Conduit-Drilling which starts on a flank, encloses both the hydrothermal and magmatic fluid systems of the volcano in a continuous profile. Real-time gas analysis will provide essential data on the amount and penetration depth of meteoric water as well as on convection processes of deep ground water and the dynamics and intensity of the mixture with volcanic (magmatic) gases. The internal connections and geometry of the fumaroles can thus be quantified directly along the drilled depth profile. With the planned gas monitoring experiment and subsequent laboratory isotope studies we aim to explain in how far a correlation exists between the composition and amount of degassed magmatic fluids and the seismicity in the volcano as well as its eruptive behaviour.

在 ICDP 云仙钻井项目的框架内，我们计划连续分析溶解在钻井泥浆中的气相。云仙管道钻探从侧面开始，以连续的剖面包围火山的热液和岩浆流体系统。实时气体分析将提供有关大气水量和渗透深度、深层地下水对流过程以及与火山（岩浆）气体混合物的动态和强度的重要数据。因此，可以沿着钻孔深度剖面直接量化喷气孔的内部连接和几何形状。通过计划的气体监测实验和随后的实验室同位素研究，我们的目的是解释脱气岩浆流体的成分和数量与火山的地震活动及其喷发行为之间存在多大的相关性。