论文部分内容阅读
本文提出了一种用于水下多层介质视电阻率测量的新技术。这种方法基于直流地电回声测深原理。用一个多层地质模型来模拟地质目标。此测量排列为电极-电极型,电极位于水下,垂直取向。这种特殊的电极设置在不能使用常规电法时尤为有用,尤其是水深时更为重要。计算得出的视电阻率表明由水下目标所引起的被测信号在质量上有很大的提高,而应用传统的地面电极方法所测得的信号很小或者没有反应。实际上,水的分层、水下潜流或气象条件等因素使野外测量结果的解释复杂化。本文展示了在日内瓦湖进行的一个研究实例,使用计算出的视电阻率曲线对野外测量进行了解释。
This paper presents a new technique for measuring apparent resistivity in multi-layered underwater media. This method is based on the principle of direct echosountry. Use a multi-layer geological model to simulate geological targets. This measurement is arranged as an electrode-electrode type, with the electrodes positioned underwater and vertically oriented. This special electrode setting is particularly useful when you can not use conventional electrical methods, especially when water depth is more important. Calculated apparent resistivity indicates that the quality of the signal under test caused by the underwater target is greatly improved, whereas the signal measured by the conventional ground electrode method has little or no response. In fact, factors such as stratification of water, underwater subsurface flow, or meteorological conditions complicate the interpretation of field measurements. This article shows an example of a study conducted at Lake Geneva using the calculated apparent resistivity curves to explain field measurements.