Experimentelle Untersuchung aufsteigender Magmen

岩浆上升的实验研究

• 批准号: 124743049
• 负责人: Professor Dr. Marcus Nowak
• 金额: --
• 依托单位: Forschungsbereich Mineralogie und Geodynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/124743049?language=en
• 关键词: Experimentelle; Untersuchung; aufsteigender; Magmen

The physicochemical and kinetic processes in ascending volatile bearing magmas will be studied in this project. This is fundamental for the understanding of volcanic processes. The main objectives are the experimental study of H2O and CO2 degassing and coupled crystallization processes in rhyolitic to basaltic melts during decompression. For the experiments, a newly developed decompression valve for the internally heated pressure vessel is used. The novel valve facilitates for the first time very low decompression rates at pressures of 500 MPa, allowing the simulation of realistic, continuous-magma ascent rates. For the characterization of the partially degassed and crystallized samples a FTIR spectrometer with a microscope and a focal plane array detector for determining the spatial distribution of the volatile components H2O and CO2 will be used. The experimental results are essential input data for the modeling of volcanic processes to optimize the risk assessment.

本项目将研究含挥发分岩浆上升过程中的物理化学和动力学过程。这是了解火山活动过程的基础。主要目的是对流纹质-玄武质熔体减压过程中H2O和CO2的脱气及耦合结晶过程进行实验研究。在实验中，使用了一种新开发的用于内部加热压力容器的减压阀。该新型阀门首次在500 MPa的压力下实现了非常低的减压速率，从而可以模拟真实的连续岩浆上升速率。对于部分脱气和结晶样品的表征，将使用带有显微镜和焦平面阵列检测器的FTIR光谱仪来确定挥发性组分H2O和CO2的空间分布。实验结果是火山过程建模的重要输入数据，以优化风险评估。

项目成果

Degassing of H2O in a phonolitic melt: A closer look at decompression experiments

H2O 在声石熔体中的脱气：仔细观察减压实验

• DOI: 10.1016/j.jvolgeores.2014.11.017
• 发表时间: 2015
• 期刊: Journal of Volcanology and Geothermal Research
• 影响因子: 2.9
• 作者: Marxer;Bellucci
• 通讯作者: Bellucci

Micro-FTIR imaging: an advanced method for the determination of CO2 and H2O concentration gradients in silicate glasses

微型 FTIR 成像：一种测定硅酸盐玻璃中 CO2 和 H2O 浓度梯度的先进方法

• DOI: 10.1127/0935-1221/2013/0025-2299
• 发表时间: 2013
• 期刊: European Journal of Mineralogy
• 影响因子: 2.1
• 作者: Marxer