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首页> 外文期刊>Earth, planets and space: EPS >Measurement of atmospheric air-earth current density from a tropical station using improvised Wilson's plate antenna
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Measurement of atmospheric air-earth current density from a tropical station using improvised Wilson's plate antenna

机译：使用简易的威尔逊平板天线测量热带站大气大气电流密度

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We have developed an experimental set-up to measure the atmospheric air-earth current (conduction current). Data obtained with the continuous measurements of Wilson's plate are used to study of air-earth current density, with the aim of gaining an understanding of the experimental set-up's response to different meteorological conditions, including fair-weather days. This paper is a part of the on-going Global Electric Circuit (GEC) studies from Tirunelveli (8.7°N, 77.8°E), a measurement site in the tropical and southern tip of the Indian peninsula. Attempts have been made in past few years to obtain the global signature in this region with this sensor, but on most of the occasions it has been impossible to obtain the global signature during fair-weather days. The data used for February-April, 2007 have the well-defined nature of this global signature, which is in agreement with the well-established classical Carnegie curve of GEC. This paper also deals with very important observations made at sunrise and during those hours when fog existed. It is noted that the resistivity of the atmosphere increased significantly with the onset of fog and later decreased as the fog disappeared, based on the measured value of conduction current density when compared with the electric field measured by horizontal passive wire antenna. Also, during fair-weather conditions, conduction current and electric field variations are similar because the conductivity during this period is more or less constant at this site. Observations made during different meteorological conditions, such as different wind speeds, humidities, and temperatures, are also discussed.
机译：我们已经开发出一个实验装置来测量大气中的地球电流（传导电流）。通过连续测量威尔逊板块获得的数据被用于研究地球电流密度，目的是了解实验装置对不同气象条件（包括晴天）的响应。本文是Tirunelveli（8.7°N，77.8°E）（印度半岛热带和南端的测量地点）正在进行的全球电路（GEC）研究的一部分。在过去的几年中，已经尝试使用该传感器来获得该区域的全球签名，但是在大多数情况下，在天气晴朗的日子里不可能获得全球签名。 2007年2月至4月使用的数据具有该全局签名的明确定义的性质，这与GEC公认的经典卡内基曲线一致。本文还讨论了日出时​​以及有雾时的非常重要的观察结果。注意，与水平无源线天线测得的电场相比，基于传导电流密度的测量值，大气的电阻率随雾的开始而显着增加，随后随着雾的消失而降低。而且，在天气晴朗的情况下，传导电流和电场变化是相似的，因为在此期间该位置的电导率或多或少是恒定的。还讨论了在不同的气象条件（例如不同的风速，湿度和温度）下进行的观测。

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