Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (1): 254-261.doi: 10.13278/j.cnki.jjuese.201601302

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Weighted Laterally-Constrained Inversion of Time-Domain Airborne Electromagnetic Data

Yin Changchun, Qiu Changkai, Liu Yunhe, Cai Jing   

  1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China
  • Received:2015-05-19 Online:2016-01-26 Published:2016-01-26
  • Supported by:

    Supported by Projects on the Development of the Key Equipment of Chinese Academy of Sciences (ZDYZ2012-1-03),China Natural Science Foundation (41274121) and Ministry of Land and Resources of the Peoples Republic of China Old Mine Review Proiect(China Geological Survey Project Agreement[2013] No.214)

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Abstract:

The resistivity and thickness inverted by traditional single-site 1D methods for time-domain airborne electromagnetic (AEM) data frequently demonstrate sharp variations along a profile. This phenomenon occurs even between neighbor stations, resulting in non-smooth layer interfaces, which can seriously complicate the interpretation. Considering that AEM systems generally have a high spatial sampling rate, and the underground structures in areas like sedimentary formations are continuous, we use the weighted laterally-constrained inversion (WLCI) algorithm to invert the time-domain AEM data. Data fitting,lateral constraints on resistivity,thickness and depth are considered at the same time, and further the constraint strength is adjusted by using the weighting factors (chosen on geological information). Through testing the above algorithm on both synthetic and survey data, and comparing the results with those from conventional inversions, the WLCI algorithm is proved to be a very reliable and effective tool to process the time-domain AEM data. The inverted results by WLCI algorithm are smooth and continuous with clear layer interfaces. Weighting for different constrained parameters can also improve the stability of inversion. The weighting factors have an important impact on the inversion results. To choose the appropriate weighting factors, the field geological information should be taken into account.

Key words: airborne electromagnetic, time-domain, weighted laterally-constrained inversion, forward modeling, inversion

CLC Number: 

  • P631.3

[1] 雷栋,胡祥云,张素芳.航空电磁法的发展现状[J].地质找矿论丛,2006,21(1):40-44. Lei Dong, Hu Xiangyun, Zhang Sufang. Development Status of Airborne Electromagnetic[J]. Contributions to Geology and Mineral Resources Research, 2006, 21(1):40-44.

[2] 殷长春,张博,刘云鹤,等.航空电磁勘查技术发展现状及展望[J].地球物理学报,2015,58(8):2637-2653. Yin Changchun, Zhang Bo, Liu Yunhe, et al. Review on Airborne EM Technology and Developments[J]. Chinese Journal of Geophysics, 2015, 58(8):2637-2653.

[3] Macnae J, King A, Stolz N, et al. Fast AEM Data Processing and Inversion[J]. Exploration Geophysics, 1998, 29(1/2):163-169.

[4] Wolfgram P, Karlik G. Conductivity-Depth Transform of GEOTEM Data[J]. Exploration Geophysics, 1995, 26(2/3):179-185.

[5] 陈小红,段奶军.时间域航空电磁快速成像研究[J].地球物理学进展,2012,27(5):2123-2127. Chen Xiaohong, Duan Naijun. Study on Fast Imaging of Airborne Time-Domain Electromagnetic Data[J]. Progress in Geophysics, 2012, 27(5):2123-2127.

[6] Huang H, Rudd J. Conductivity-Depth Imaging of He-licopter-Borne TEM Data Based on a Pseudolayer Half-Space Model[J]. Geophysics, 2008, 73(3):F115-F120.

[7] 朱凯光,林君,韩悦慧,等.基于神经网络的时间域直升机电磁数据电导率深度成像[J].地球物理学报,2010,53(3):743-750. Zhu Kaiguang, Lin Jun, Han Yuehui, et al. Research on Conductivity Depth Imaging of Time Domain Helicopter-Borne Electromagnetic Data Based on Neural Network[J]. Chinese Journal of Geophysics, 2010, 53(3):743-750.

[8] 毛立峰.中心回线直升机TEM资料的电导率-深度成像方法[J].CT理论与应用研究,2013,22(3):429-437. Mao Lifeng. Conductivity-Depth Imaging Algorithm for Central-Loop Helicopter TEM[J]. CT Theory and Applications, 2013, 22(3), 429-437.

[9] 嵇艳鞠, 冯雪, 于明媚, 等. 基于多元线性回归的HTEM三维异常体电导率-深度识别[J]. 吉林大学学报(地球科学版), 2014, 44(5):1687-1694. Ji Yanju, Feng Xue, Yu Mingmei, et al. Conductivity-Depth Identification of HTEM 3D Anomalies Based on Multiple Linear Regression[J]. Journal of Jilin University (Earth Science Edition), 2014, 44(5):1687-1694.

[10] 黄皓平,王维中.时间域航空电磁数据的反演[J].地球物理学报,1990,33(1):87-97. Huang Haoping, Wang Weizhong. Inversion of Time-Domain Airborne Electromagnetic Data[J]. Chinese Journal of Geophysics, 1990, 33(1):87-97.

[11] 罗勇,陆从德,王宇航.时间域航空电磁一维阻尼特征参数反演方法[J].地球物理学进展,2014,29(6):2723-2729. Luo Yong, Lu Congde, Wang Yuhang. 1D Inverse Method Based on Damped Eigenparameter for Airborne Time Domain Electromagnetic Data[J]. Progress in Geophysics, 2014, 29(6):2723-2729.

[12] 强建科,李永兴,龙剑波.航空瞬变电磁数据一维Occam反演[J].物探化探计算技术,2013,35(5):501-505. Qiang Jianke, Li Yongxing, Long Jianbo. 1D Occam Inversion Method for Airborne Transient Electromagnetic Data[J]. Computing Techniques for Geophysical and Geochemical Exploration, 2013, 35(5):501-505.

[13] Constable S C, Parker R L, Constable C G. Occam's Inversion:A Practical Algorithm for Generating Smooth Models from Electromagnetic Sounding Data[J]. Geophysics, 1987, 52(3):289-300.

[14] Sattel D. Inverting Airborne Electromagnetic (AEM) Data with Zohdy's Method[J]. Geophysics, 2005, 70(4):G77-G85.

[15] 刘云鹤,殷长春.三维频率域航空电磁反演研究[J].地球物理学报,2013,56(12):4278-4287. Liu Yunhe, Yin Changchun. 3D Inversion for Frequency-Domain HEM Data[J]. Chinese Journal of Geophysics, 2013, 56(12):4278-4287.

[16] Auken E, Foged N, Sørensen K I. Model Recognition by 1-D Laterally Constrained Inversion of Resistivity Data[C]//8th EEGS-ES Meeting. Aveiro:Universidade de Aveiro, 2002.

[17] Auken E, Christiansen A V. Layered and Laterally Constrained 2D Inversion of Resistivity Data[J]. Geophysics, 2004, 69(3):752-761.

[18] Santos F A M. 1-D Laterally Constrained Inversion of EM34 Profiling Data[J]. Journal of Applied Geophysics, 2004, 56(2):123-134.

[19] Auken E, Christiansen A V, Jacobsen L, et al. La-terally Constrained 1D-Inversion of 3D TEM Data[C]//10th European Meeting of Environmental and Engineering Geophysics. Utrecht:[s. n.], 2004.

[20] Siemon B, Auken E, Christiansen A V. Laterally Constrained Inversion of Helicopter-Borne Frequency-Domain Electromagnetic Data[J]. Journal of Applied Geophysics, 2009, 67(3):259-268.

[21] 蔡晶,齐彦福,殷长春,等.频率域航空电磁数据的加权横向约束反演[J].地球物理学报,2014,57(1):953-960. Cai Jing, Qi Yanfu, Yin Changchun, et al. Weighted Laterally-Constrained Inversion of Frequency-Domain Airborne EM Data[J]. Chinese Journal of Geophy-sics, 2014, 57(1):953-960.

[22] Vallée M A, Smith R S. Inversion of Airborne Time-Domain Electromagnetic Data to a 1D Structure Using Lateral Constraints[J]. Near Surface Geophysics, 2009, 7(1):63-71.

[23] 殷长春,黄威,贲放.时间域航空电磁系统瞬变全时响应正演模拟[J].地球物理学报,2013,56(9):3153-3162. Yin Changchun, Huang Wei, Ben Fang. The Full-Time Electromagnetic Modeling for Time-Domain Airborne Electromagnetic Systems[J]. Chinese Journal of Geophysics, 2013, 56(9):3153-3162.

[24] Yin C, Smith R S, Hodges G, et al. Modeling Results of On-and Off-Time B and dB/dt for Time-Domain Airborne EM Systems[C]//70th Annual EAGE Conference and Exhibition. Rome:[s. n.], 2008:1-4.

[25] Smith R S, Lee T. Asymptotic Expansion for Calculation of Transient EM Fields Induced by a Vertical Magnetic Dipole Above a Conductive Half-Space[J]. Pure and Applied Geophysics, 2004, 161:385-397.

[26] Marquardt D. An Algorithm for Least-Squares Estimation of Nolinear Parameters[J]. Journal of the Society for Industrial and Applied Mathematics, 1963, 11(2):431-441.

[27] Chen T, Hodges G, Miles P. MULTIPULSE-High Resolution and High Power in One TDEM System[J]. Exploration Geophysics, 2015, 46(1):49-57.
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