Abstract
Transient electromagnetic method (TEM) data suffering from the “turn-off effect” can influence its inversion results and thus may further affect the joint inversion results of direct current (DC) and the TEM. In this study, the law of inversion results of TEM data suffering from the “turn-off effect” are summarized, and the necessity of full-domain TEM inversion is proven. The synthetic data of DC and TEM suffering from the “turn-off effect” are used to test the effect of the joint inversion of DC and full-domain TEM, and the result is compared with that of the single method. Then, the joint inversion is applied to field data detecting the water abundance of weathered rocks, and the delineated anomalies are found to be accurate and reliable by borehole verification. Results of the joint inversion of DC and the TEM are remarkably affected by TEM data suffering from the “turn-off effect,” which is harmful to fine interpretation. Nevertheless, the influence of the “turn-off effect” is effectively reduced by the joint inversion of DC and full-domain TEM, and the accuracy of joint inversion results is better than that of each method. In summary, the joint inversion of DC and full-domain TEM is proved to be necessary to realize fine processing and interpretation for the water abundance of weathered rocks.
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Albouy, Y., Andrieux, P., Rakotondrasoa, G., Ritz, M., Descloitres, M., Join, J. L., & Rasolomanana, E. (2001). Mapping coastal aquifers by joint inversion of DC and TEM soundings-three case histories. Ground Water, 39(1), 87–97.
Ardali, A. S., Tezkan, B., & Gürer, A. (2018). On the salt water intrusion into the Durusu lake, Istanbul: A joint central loop TEM and multi-electrode ERT field survey. Pure and Applied Geophysics, 175(8), 3037–3050.
Chen, K., Xue, G. Q., Chen, W. Y., Zhou, N. N., & Li, H. (2019). Fine and quantitative evaluations of the water volumes in an aquifer above the coal seam roof, based on TEM. Mine Water and the Environment, 38(1), 49–59.
Chen, M. S., & Xu, Y. C. (2017). Suitable algorithm of transient electromagnetic turn-off effects and whole-stage apparent resistivity. Coal Geology and Exploration, 45(4), 131–134. in Chinese.
Chen, X. B., Zhao, G. Z., Tang, J., Zhan, Y., & Wang, J. J. (2005). An adaptive regularized inversion algorithm for magnetotelluric data. Chinese Journal of Geophysics, 48(4), 937–946. in Chinese.
Cheng, J. L., Li, F., Peng, S. P., Sun, X. Y., Zheng, J., & Jia, J. Z. (2015). Joint inversion of TEM and DC in roadway advanced detection based on particle swarm optimization. Journal of Applied Geophysics, 123, 30–35.
Cheng, J. L., Li, M. X., Xiao, Y. L., Sun, X. Y., & Chen, D. (2014). Study on particle swarm optimization inversion of mine transient electromagnetic method in whole-space. Chinese Journal of Geophysics, 57(10), 3478–3484. in Chinese.
Constable, S. C., Parker, R., & l., & Constable, G. C. (1987). Occam’s inversion: A practical algorithm for generating smooth models from electromagnetic sounding data. Geophysics, 52(3), 289–300.
Demirci, I., Gundogdu, N. Y., Candansayar, M. E., Soupios, P., Vafidis, A., & Arslan, H. (2020). Determination and evaluation of saltwater intrusion on bafra plain: Joint interpretation of geophysical, hydrogeological and hydrochemical data. Pure and Applied Geophysics, 177, 5621–5640.
Dong, Y. (2017). Study on all time apparent resistivity calculation of transient electromagnetic method. Chapter 4. Master thesis, Xi’an University of Science and Technology. (in Chinese).
Dong, Y., Cheng, J. L., Xue, J. J., Wen, L. F., Chen, T., Wang, H. J., Chen, Z., & Tian, C. X. (2021). Research on pseudo-2D joint inversion of TEM and CSAMT based on well log constraint. Journal Environment and Engineering Geophysics, 26(1), 61–70.
Farzamian, M., Ribeiro, J. A., Khalil, M. A., Santos, F. A. M., Kashkouli, M. F., Bortolozo, C. A., & Mendonca, J. L. (2019). Application of transient electromagnetic and audio-magnetotelluric methods for imaging the monte real aquifer in Portugal. Pure and Applied Geophysics, 176, 719–735.
Fitterman, D. V., & Anderson, W. L. (1987). Effect of transmitter turn-off time on transient soundings. Geoexploration, 24(2), 131–146.
Gao, J., & Zhang, H. J. (2016). Two-dimensional joint inversion of seismic velocity and electrical resistivity using seismic travel times and full channel electrical measurements based on alternating cross-gradient structural constraint. Chinese Journal of Geophysics, 59(11), 4310–4322. in Chinese.
Godio, A., & Santilano, A. (2018). On the optimization of electromagnetic geophysical data: Application of the PSO algorithm. Journal of Applied Geophysics, 148, 163–174.
Martínez-Moreno, F. J., Monteiro-Santos, F. A., Bernardo, I., Farzamian, M., Nascimento, C., Fernandes, J., Casal, B., & Ribeiro, J. A. (2017). Identifying seawater intrusion in coastal areas by means of 1D and quasi-2D joint inversion of TDEM and VES data. Journal of Hydrology, 552, 609–619.
Massoud, U., Qady, G. E., Metwaly, M., & Santos, F. (2009). Delineation of shallow subsurface structure by azimuthal resistivity sounding and joint inversion of VES-TEM data: Case study near Lake Qaroun, El Fayoum, Egypt. Pure of Applied Geophysics, 166, 701–719.
Pace, F., Godio, A., Santilano, A., & Comina, C. (2019). Joint optimization of geophysical data using multi-objective swarm intelligence. Geophysical Journal International, 218, 1502–1521.
Pace, F., Santilano, A., & Godio, A. (2019). Particle swarm optimization of 2D magnetotelluric data. Geophysics, 84(3), E125–E141.
Raiche, A. P. (1984). The effect of ramp function turn-off on the TEM response of layered earth. Exploration Geophysics, 15(1), 37–41.
Raiche, A. P., Jupp, D. L. B., Rutter, H., & Vozoff, K. (1985). The joint use of coincident loop transient electromagnetic and Schlumberger sounding to resolve layered structures. Geophysics, 50(10), 1618–1627.
Rajab, J. S. A., & El-Naqa, A. R. (2013). Mapping groundwater salinization using transient electromagnetic and direct current resistivity methods in Azraq Basin, Jordan. Geophysics, 78(2), B89–B101.
Santilano, A., Godio, A., & Manzella, A. (2018). Particle swarm optimization for simultaneous analysis of magnetotelluric (MT) and time domain EM (TDEM) data. Geophysics, 83(3), 151–159.
Santos, F. A. M., & El-Kaliouby, H. M. (2010). Comparative study of local versus global methods for 1D joint inversion of direct current resistivity and time-domain electromagnetic data. Near Surface Geophysics, 8(2), 135–143.
Shi, Z., Liu, L., Xiao, P., Geng, Z., Liu, F. B., & Fang, G. Y. (2018). Simulation and analysis of the effect of ungrounded rectangular loop distributed parameters on TEM response. Journal of Applied Geophysics, 149, 105–113.
Sun, H. F., Li, X., Li, S. C., Qi, Z. P., Wang, W. P., Su, M. X., Xue, Y. G., & Liu, B. (2013). Three-dimensional FDTD modelling of TEM excited by a loop source considering ramp time. Chinese Journal of Geophysics, 56(3), 1049–1046. in Chinese.
Wang, P., Wang, Q., Wang, Y., & Wang, C. (2021). Detection of abandoned coal mine goaf in China’s ordos basin using the transient electromagnetic method. Mine Water and the Environment, 40, 415–425.
Wang, P., Yao, W. H., Guo, J. L., Su, C., Wang, Q., Wang, Y., Zhang, B. W., & Wang, C. (2021). Detection of shallow buried water-filled goafs using the fixed-loop transient electromagnetic method: A case study in Shaanxi, China. Pure and Applied Geophysics, 178, 529–544.
Xie, H. J., Li, J., Dong, Y., Li, G. Y., & Han, Z. H. (2021). Fast fisher discrimination of water-rich burnt rock based on DC electrical sounding data. Mine Water and the Environment, 40, 539–546.
Xue, G., & Q., Hou, D. Y., & Qiu, W. Z. (2018). Identification of double-layered water filled zones using TEM: A case study in China. Journal Environment and Engineering Geophysics, 23(3), 297–304.
Yang, C. H., Tong, L. T., & Huang, C. F. (1999). Combined application of DC and TEM to sea-water intrusion mapping. Geophysics, 64(2), 417–425.
Acknowledgements
We are grateful to Prof. Chen Mingsheng for his valuable guidance. This work is supported by the Natural Science Foundation of China (Grant no. 41974088) and the Natural Science Foundation of Hebei Province, China (Grant nos. D2019508160, D2020402013, and D2020402032).
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Dong, Y., Cheng, J., Xie, H. et al. Joint Inversion and Application of DC and Full-Domain TEM with Particle Swarm Optimization. Pure Appl. Geophys. 179, 371–383 (2022). https://doi.org/10.1007/s00024-021-02912-x
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DOI: https://doi.org/10.1007/s00024-021-02912-x