Abstract: The data acquisition techniques for CEMP in mountainous areas of western China have specific problems comparing with other regions. For instance, the routine methods are usually difficult to be used and/or the quality of acquired data can not be ensured. We make comparison analyses to some problems on the basis of experiments porformed in recent years. These are concerning with how to choose electrode spacing in a flexible manner, how to control record time, what is the effect of measarement sites on data quality, the density of megnetic stations and effect of remote and near references. We summarize the characteristics of implication for CEMP in mountain areas of western China and emphasize the importance of study on the data acquisition techniques for CEMP in these areas.

Key words: Magnetotelluric method, CEMP, Data acquisition in Mountain area

摘要： 西部山区CEMP数据采集技术与其它地区相比具有其特殊性,如果采用常规方法往往难以实施,或采集数据质量难以保证。根据近年来结合生产开展的试验,对一些具体技术,如电极距如何灵活选择,采集记录时间如何掌握,测点位置对资料品质的影响,磁站布设的疏密程度以及远参考、近参考的作用等,作了对比分析。此外,还总结了西部山区CEMP施工的一些技术特点及规律,指出了西部山区CEMP采集方法研究的重要性。

关键词: 大地电磁, CEMP, 山区数据采集