| 大地电磁二维反演方法对比 ——REBOCC与DASOCC研究结果 |
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| 引用本文： | 何俊飞. 大地电磁二维反演方法对比 ——REBOCC与DASOCC研究结果[J]. 勘探地球物理进展, 2010, 33(1): 26-31 |
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| 作者姓名： | 何俊飞 |
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| 作者单位： | 广东省有色金属地质勘查局地质勘查研究院,广东广州,510080 |
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| 摘 要： | 数据空间OCCAM反演(DASOCC)与简化基础的OCCAM反演(REBOCC)是两种改进的OCCAM反演方法,它们的原理完全相同。REBOCC需要对实测的频点数据进行抽稀,反演速度较快,但是当频点数据较少时,反演模型的拟合差较大;而DASOCC不对数据抽稀,反演模型的拟合差较小,但反演速度较慢,当频点数据较多时,需要运行很长时间。基于这种考虑,对几套正演数据进行转化并反演,讨论用单一模式和联合模式反演的结果,比较在相同参数设定条件下,两种反演方法得到的结果与理论模型差异的大小,研究不同反演模式和频点数据抽稀对反演结果的影响。
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| 关 键 词： | DASOCC |
| 收稿时间： | 2009-05-12 |
Comparison of 2-D magnetotelluric inversion methods: Study of REBOCC and DASOCC methods |
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| He Junfei. Comparison of 2-D magnetotelluric inversion methods: Study of REBOCC and DASOCC methods[J]. Progress in Exploration Geophysics, 2010, 33(1): 26-31 |
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| Authors: | He Junfei |
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| Abstract: | REBOCC and DASOCC are two new and much more efficient variants of the OCCAM scheme with the same principles.REBOCC needs to downsample data while DASOCC does not.REBOCC is faster and its result is poorer than DASOCC because less data are used.This paper investigated the effect of downsampling on inversion by comparing the results from REBOCC and DASOCC on several data sets generated by forward modeling. |
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| Keywords: | DASOCC REBOCC 2-D inversion downsampling |
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