|本期目录/Table of Contents|

[1]宋婉婷,陈卫营*.SOTEM数据拟二维反演研究与应用[J].地球科学与环境学报,2022,44(01):132-142.[doi:10.19814/j.jese.2021.10021]
　SONG Wan-ting,CHEN Wei-ying*.Study on Quasi-2D Inversion for SOTEM Data and Its Application[J].Journal of Earth Sciences and Environment,2022,44(01):132-142.[doi:10.19814/j.jese.2021.10021]
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第44卷
期数:
2022年第01期
页码:
132-142
栏目:
应用地球物理
出版日期:
2022-01-15

文章信息/Info

Title:
Study on Quasi-2D Inversion for SOTEM Data and Its Application
文章编号:
1672-6561(2022)01-0132-11
作者:
宋婉婷1; 2; 3; 陈卫营1; 2; 3*
(1. 中国科学院地质与地球物理研究所 中国科学院矿产资源研究重点实验室,北京 100029; 2. 中国科学院地球科学研究院,北京 100029; 3. 中国科学院大学 地球与行星科学学院,北京 100049)
Author(s):
SONG Wan-ting1; 2; 3;  CHEN Wei-ying1; 2; 3*
(1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China; 3. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China)
关键词:
电性源;  短偏移距;  瞬变电磁法;  自适应正则化算法;  约束反演;  拟二维反演;  采空区
Keywords:
electrical source;  short-offset;  transient electromagnetic method;  AIRA algorithm;  constraint inversion;  quasi-2D inversion;  old coal mining area
分类号:
P631; P319.3+2
DOI:
10.19814/j.jese.2021.10021
文献标志码:
A
摘要:
一维反演是目前电性源短偏移瞬变电磁法(SOTEM)数据反演的主要方式。受噪音、地形等因素影响,单点一维反演结果通常会出现横向电阻率突变、电性层结构混乱、层界面不清晰的现象,给结果解释带来困难。针对SOTEM数据采样密集、测点间距小的特点,采用自适应正则化(AIRA)算法,在单点一维反演的基础上,同时考虑先验信息和空间粗糙度的模型约束项,实现SOTEM数据拟二维反演。理论模型与实测数据反演结果表明,拟二维反演比单点一维反演的电阻率连续性更好,目标层厚度也更接近真实值,且反演速度更快、抗噪效果更为显著。
Abstract:
1D inversion is currently the main method of data inversion for electrical source short-offset transient electromagnetic method(SOTEM). Affected by factors such as noise and topography, the inversion results by single-site 1D methods frequently demonstrate abrupt transverse resistivity, chaotic structure of electrical layer and unclear layer interface, which can seriously complicate the interpretation. Considering that SOTEM data generally have a high sampling rate and small distance between adjacent points, based on AIRA algorithm, the quasi-2D inversion is used to invert the SOTEM data, taking into account the model constraints of prior information and spatial roughness at the same time. The inversion results of theoretical model and measured data indicate that the quasi-2D inversion has better resistivity continuity, higher accuracy, faster speed and better anti-noise effect.

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相似文献/References:

[1]常江浩,薛国强*.电性源短偏移距瞬变电磁场扩散规律三维数值模拟[J].地球科学与环境学报,2020,42(06):711.[doi:10.19814/j.jese.2020.07048]
　CHANG Jiang-hao,XUE Guo-qiang*.Three-dimensional Numerical Simulation of Diffusion Law of Short-offsetGrounded-wire Transient Electromagnetic Field[J].Journal of Earth Sciences and Environment,2020,42(01):711.[doi:10.19814/j.jese.2020.07048]

备注/Memo

备注/Memo:
收稿日期:2021-10-13; 修回日期:2021-12-28
基金项目:国家自然科学基金项目(42010306,41704076); 中国科学院科研仪器设备研制项目(YJKYYQ20190004); 第二次青藏高原综合科学考察研究专题(2019QZKK0804); 自然资源部煤炭资源勘查与综合利用重点实验室开放项目(KF2020-3)
作者简介:宋婉婷(1997-),女,山西运城人,中国科学院大学理学硕士研究生,E-mail:swt@mail.iggcas.ac.cn。*通讯作者:陈卫营(1987-),男,山东莒县人,中国科学院地质与地球物理研究所副研究员,理学博士,E-mail:cwy@mail.iggcas.ac.cn。
更新日期/Last Update: 2022-02-25