一个热力学解释黑色吸烟者温度的热力学解释
1Institute of Theoretical Geophysics, Department of Earth Sciences, University of Cambridge, UK. tim@itg.cam.ac.uk
Nature
|March 8, 2000
概括
水的非线性热力学特性自然会从更热的海底热源中产生400°C的羽毛. 这解释了黑烟的温度,并预测了在岩冷却期间稳定的通风条件.
科学领域:
- 地质化学 地质化学
- 水热系统 水热系统
- 流体动力学 流体动力学
背景情况:
- 黑烟废水温度 (350°C-400°C) 显著低于1200°C的凝固性岩源.
- 假设水的非线性热力学特性可以解释这种温度差异.
研究的目的:
- 开发一个物理模型,解释黑烟废水和岩之间的温度差异.
- 研究水的热力学特性在海底热水系统中的作用.
主要方法:
- 在多孔介质中检查了对流细胞的内部温度结构.
- 基于水的热力学特性开发了一个分析模型.
- 利用数值模拟来说明这一现象.
主要成果:
- 证明了在海底地压力下,来自500°C以上的热源的400°C的纯水的自然形成.
- 确定较高的温度仅限于对流电池底部的水平边界层.
- 该模型分析地解释了基于水的热力学特性来调节温度.
结论:
- 这项研究为黑烟机系统中观察到的温度差异提供了物理解释.
- 该模型预测了ophiolites中存在的高温"反应区".
- 预计风口温度将保持稳定,因为岩室冷却和固化.
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