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首页> 外文会议>23rd New Zealand Geothermal Workshop 2001, 2001, Auckland >HYDROTHERMAL ERUPTIONS: MECHANISMS AND IMPLICATIONS FOR PREDICTION
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HYDROTHERMAL ERUPTIONS: MECHANISMS AND IMPLICATIONS FOR PREDICTION

机译：水热喷发：预测的机理和意义

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摘要

Hydrothermal eruptions are common in both exploited and unexploited geothermal systems. They vary in scale and frequency over several orders of magnitude. Not all hydrothermal eruptions are the same - at least 5 different mechanisms can be postulated, covering a wide range of preemption physical conditions. At one extreme hydrothermal eruptions might require super-lithostatic fluid pressures to initiate. These would be reasonably easy to detect, and therefore predict given a sufficient number of monitor drillholes. At the other extreme, hydrothermal eruptions can start from a free water surface with no excess confining pressures. The occurrence of that type of eruption is more difficult to monitor for and predict. Potentially any hydrothermal system with boiling springs could generate a hydrothermal eruption. However, very large eruptions probably require some special geological event and so are rare.
机译：水热喷发在已开发和未开发的地热系统中都很常见。它们的规模和频率在几个数量级上变化。并非所有的热液喷发都是相同的-可以假定至少5种不同的机制，涵盖了广泛的抢先物理条件。在一种极端情况下，热液喷发可能需要超静液压流体来启动。这些将相当容易检测到，并因此在给定数量的监控器钻孔的情况下进行预测。在另一个极端，热液喷发可以从自由水面开始，而没有过多的围压。这类喷发的发生更难以监测和预测。任何可能带有沸腾泉的热液系统都可能产生热液喷发。但是，非常大的喷发可能需要一些特殊的地质事件，因此很少见。

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