地震地质 ›› 2001, Vol. 23 ›› Issue (2): 212-216.

• 大地电磁法研究与应用 • 上一篇    下一篇

大地电磁测深远参考处理原理及效果分析

黄哲   

  1. 中国石油集团公司浙江石油勘探处MT队, 杭州310013
  • 收稿日期:2001-01-31 修回日期:2001-02-28 出版日期:2001-06-05 发布日期:2009-10-26

REMOTE REFERENCE MT TECHNIQUE AND THE APPLICATION TO THE FIELD EXPERIMENT

Huang Zhe   

  1. Zhejiang Oil Exploration Department, Hangzhou 310013
  • Received:2001-01-31 Revised:2001-02-28 Online:2001-06-05 Published:2009-10-26

摘要: 介绍了大地电磁方法中远参考观测方式的基本原理。通过实例证明了远参考方式的有效性,并给出了不同频段远参考点和本地测点之间的一个合理的距离。在高频段远参考点至本地点相距10~20km为好,中频段50~100km比较合适;低频段应大于100km.

关键词: 大地电磁, 远参考观测, 随机噪音, 相关噪音

Abstract: Results of more than thousand filed measurements show that the remote reference technique is a powerful tool for improving the MT data quality, especially for the noisy environment. Experiments indicate that a reasonable spacing between the local station and the reference station is important for different frequency bands. For high frequency band 10~20km is better. For middle frequency band 50~100km is reasonable. For low frequency band the spacing should be greater than 100km.

Key words: Magnetotelluric, Remote reference, Random noise, Coherent noise