• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >TRANSPORT OF ATMOSPHERIC WATER VAPOR BY VOLCANIC ERUPTION COLUMNS
【24h】

TRANSPORT OF ATMOSPHERIC WATER VAPOR BY VOLCANIC ERUPTION COLUMNS

机译：火山喷发柱传输大气水蒸气

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Contrary to assumptions often made in the literature, explosive volcanic eruptions are capable of transporting significant amounts of water into the stratosphere. In addition to the magmatic water component, atmospheric water vapor is entrained by the column at lower levels. A theoretical model for the conservation of mass, momentum, and thermal energy of four separate components (dry air, water vapor, liquid condensates, and solid particles) is used to determine the extent of atmospheric water redistribution. We examine the effects of water vapor condensation on dynamical characteristics and ambient water vapor transport. A simple technique is presented for deriving canonical forms for the complex system of ordinary differential equations governing the column components. Solutions of this model are presented that show the influence of different volcanic boundary conditions and a range of ambient water vapor distributions on transport of the buoyant column. We show that the water component (vapor + liquid) of small eruption columns rising through a wet atmosphere is dominated by entrained water, whereas larger columns are dominated by the magmatic water. This is due, in part, to the proportionately smaller entrainment surface area in relation to the control volume for the larger columns. We also show that a maintained column with an initial mass flux of 2.7 x 10(8) kg s(-1) erupted into a wet atmosphere would inject 96 Mt of water vapor into the stratosphere over 24 hours, comparable to the annual input from methane oxidation or 100 midlatitude thunderstorms. This increase may accelerate the conversion of simultaneously erupted volcanic SO2 into sulfuric acid. [References: 42]
机译：与文献中经常做出的假设相反，爆炸性火山爆发能够将大量的水输送到平流层。除岩浆水成分外，塔中还夹带了较低水平的大气水蒸气。用于确定四个独立成分（干燥空气，水蒸气，液体冷凝物和固体颗粒）的质量，动量和热能守恒的理论模型用于确定大气中水的再分配程度。我们研究了水蒸气冷凝对动力学特性和环境水蒸气传输的影响。提出了一种简单的技术，用于推导控制列分量的常微分方程的复杂系统的规范形式。提出了该模型的解决方案，这些解决方案显示了不同的火山边界条件和一定范围的环境水蒸气分布对浮力柱传输的影响。我们表明，小型喷发柱通过潮湿的大气上升的水成分（蒸气+液体）主要是夹带水，而较大的喷发柱则是岩浆水。这部分是由于相对于较大色谱柱的控制体积而言，夹带表面积相对较小。我们还显示，维持柱的初始质量通量为2.7 x 10（8）kg s（-1），喷发到潮湿的大气层中，将在24小时内向平流层注入96 Mt的水蒸气，与之相比，甲烷氧化或100次中纬度雷暴。这种增加可能会加速同时喷出的火山SO2向硫酸的转化。 [参考：42]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号