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Nonlocal response functions in processing global electromagnetic data

V. V. Plotkin, A. Yu. Belinskaya, P. A. Gavrysh and A. I. Gubanov
Nonlocal response functions in processing global electromagnetic data
Russian Geology and Geophysics (November 2007) 48 (11): 968-975


We discuss approaches to mapping lateral apparent conductivity variations at different periods from magnetic observatory data using multipoint transfer operators as nonlocal functions of the EM response. The multipoint operators provide correlation of three magnetic field components recorded at all observatories. The inversion procedure was applied to Sq observatory data for 1964-68 and records of 30 magnetic storms for 1957-2001. To obtain lateral conductivity patterns, data on diurnal Sq variations and global magnetic storms were processed with the spherical harmonic analysis. The same data were used to estimate the coefficients of first harmonics in the SH series of diurnal lateral variations of Earth's apparent conductivity.

ISSN: 1068-7971
Serial Title: Russian Geology and Geophysics
Serial Volume: 48
Serial Issue: 11
Title: Nonlocal response functions in processing global electromagnetic data
Affiliation: Russian Academy of Sciences, Siberian Division, Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, Russian Federation
Pages: 968-975
Published: 200711
Text Language: English
Publisher: Allerton Press, New York, NY, United States
Accession Number: 2018-044497
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Based on Publisher-supplied data
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
Update Code: 201811
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