粗糙惩罚法在CSAMT数据处理中的应用——以湖南某地温泉勘察为例

The Application of Roughness Penalty Smoothing Method to Dealing with CSAMT Data——A Case Study of One Hot Spring Exploration in Hunan

可控源音频大地电磁法(CSAMT)作为一种人工源频率域电磁法已经被广泛的应用到地热资源勘察中。本文以CSAMT作为勘察方法,在湖南某地进行实地勘察,并且在后期数据处理中引入了近场和过渡带数据剔除以及粗糙惩罚平滑算法等方法提升数据质量,取得了良好的探测效果。可为今后的地热资源勘查提供借鉴。

As a frequency-domain sounding method, Controlled Source Audio-frequency magnetotellurics is widely applied to geothermal resource exploration. In this paper, CSAMT is used as an investigation method to detect hot spring in Hunan province, and near-field data and transitional zone data removal and roughness penalty smoothing method are introduced to improve field data quality during data process. Finally the inversion result shows good effect in this case has been achieved. With this achievement, this case can provide reference for further geothermal resource exploration.