Abstract
In this paper we analyze the amplitude spectra of the audiomagnetotelluric (AMT) natural-source signal. Special attention is given to the signal in the frequency range from 1 to 5 kHz known as “dead band”. We study the measurements of the base sites that were used during summer fieldwork in 2013, 2014 and 2017 in Chukotka Region (Russian Far East). The area is located above the Arctic Circle. As it has been described by previous researchers, the stable signal in the dead band can be acquired only at nighttime. We would like to point out that in the daytime the local maximum at 2.4 kHz frequency is observed within the dead band in Chukotka. The 2.2 and 2.6 kHz frequencies can be reconstructed by using more than 3 h of daytime data acquisition. These frequencies can be used as the ranging marks. These ranging marks sometimes allow reconstructing the AMT curve by using the relationship between the amplitude and phase. We present a proposal for improving data quality in the dead band during the daytime.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Berdichevsky, M.N., Dmitriev, V.I.: Models and methods of magnetotellurics, 564 p. Springer, Berlin, Heidelberg (2008)
Garcia, X., Jones, A.: Atmospheric sources for audio-magnetotelluric (AMT) sounding. Geophysics 67, 448–458 (2002)
Jones, A.: Magnetotellurics: status quo and quo vadimus. DMEC Exploration 2017 Abstr 11, 139–158 (2017)
Ermolin, E., Ingerov, O., Savichev, A.: Gold exploration in Chukotka region by using audiomagnetotellurics. In: 22-nd EM Induction Workshop, Weimar, Germany Abstr (2014)
Gamble, T.D., Goubau, W.M., Clark, J.: Magnetotellurics with remote reference. Geophysics 44, 53–68 (1979)
Feldman, I., Ermolin, E.: Amplitude-phase correction of magnetotelluric impedance curves. Zapiski Gornogo Instituta 194, 200–210 (2011). (in Russian with English abstract)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Ermolin, E., Ingerov, O., Yankilevich, A.A., Pokrovskaya, N.N., Davytkina, T.V., Melnikov, V. (2020). The Features of Dead Band AMT Signal in Chukotka Region. In: Yanovskaya, T., Kosterov, A., Bobrov, N., Divin, A., Saraev, A., Zolotova, N. (eds) Problems of Geocosmos–2018. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-030-21788-4_2
Download citation
DOI: https://doi.org/10.1007/978-3-030-21788-4_2
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-21787-7
Online ISBN: 978-3-030-21788-4
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)