Variability of averaged annual impedances of the Earth and their spatial gradients in Europe
Secular variations of the Earth’s impedance for periods from several hours till month have been detected by two kinds of induction sounding methods. The analysis is based on the dynamic spectra of the 30-70 year data series observed at eight geomagnetic observatories in Central Europe. The apparent...
Saved in:
| Date: | 2012 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | Russian |
| Published: |
S. Subbotin Institute of Geophysics of the NAS of Ukraine
2012
|
| Online Access: | https://journals.uran.ua/geofizicheskiy/article/view/116778 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Geofizicheskiy Zhurnal |
Institution
Geofizicheskiy Zhurnal| _version_ | 1856543295466897408 |
|---|---|
| author | Semenov, V. Yu. Petrishchev, M. S. |
| author_facet | Semenov, V. Yu. Petrishchev, M. S. |
| author_sort | Semenov, V. Yu. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2020-10-07T12:21:33Z |
| description | Secular variations of the Earth’s impedance for periods from several hours till month have been detected by two kinds of induction sounding methods. The analysis is based on the dynamic spectra of the 30-70 year data series observed at eight geomagnetic observatories in Central Europe. The apparent resistivities obtained by the generalized magnetovariation sounding method have been averaged for annual intensity taking into account coherence values. These annual variations are correlated with the intensity of the Sun activity. Besides, the Earth’s apparent resistivities have some quasi-linear trends. Five groups of observatories have been analyzed to estimate the lateral gradients of response functions. The most brightly changes of the induction vectors have been established for imaginary arrow Cv near the years 1969-1972. The obtained results have been used to estimate possible variability of the Earth’s conductance. The peculiarities of this phenomenon are discussed. |
| first_indexed | 2025-07-17T11:07:49Z |
| format | Article |
| id | journalsuranua-geofizicheskiy-article-116778 |
| institution | Geofizicheskiy Zhurnal |
| language | Russian |
| last_indexed | 2025-07-17T11:07:49Z |
| publishDate | 2012 |
| publisher | S. Subbotin Institute of Geophysics of the NAS of Ukraine |
| record_format | ojs |
| spelling | journalsuranua-geofizicheskiy-article-1167782020-10-07T12:21:33Z Variability of averaged annual impedances of the Earth and their spatial gradients in Europe Semenov, V. Yu. Petrishchev, M. S. Secular variations of the Earth’s impedance for periods from several hours till month have been detected by two kinds of induction sounding methods. The analysis is based on the dynamic spectra of the 30-70 year data series observed at eight geomagnetic observatories in Central Europe. The apparent resistivities obtained by the generalized magnetovariation sounding method have been averaged for annual intensity taking into account coherence values. These annual variations are correlated with the intensity of the Sun activity. Besides, the Earth’s apparent resistivities have some quasi-linear trends. Five groups of observatories have been analyzed to estimate the lateral gradients of response functions. The most brightly changes of the induction vectors have been established for imaginary arrow Cv near the years 1969-1972. The obtained results have been used to estimate possible variability of the Earth’s conductance. The peculiarities of this phenomenon are discussed. S. Subbotin Institute of Geophysics of the NAS of Ukraine 2012-08-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116778 10.24028/gzh.0203-3100.v34i4.2012.116778 Geofizicheskiy Zhurnal; Vol. 34 No. 4 (2012); 245-252 Геофизический журнал; Том 34 № 4 (2012); 245-252 Геофізичний журнал; Том 34 № 4 (2012); 245-252 2524-1052 0203-3100 ru https://journals.uran.ua/geofizicheskiy/article/view/116778/110835 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| spellingShingle | Semenov, V. Yu. Petrishchev, M. S. Variability of averaged annual impedances of the Earth and their spatial gradients in Europe |
| title | Variability of averaged annual impedances of the Earth and their spatial gradients in Europe |
| title_full | Variability of averaged annual impedances of the Earth and their spatial gradients in Europe |
| title_fullStr | Variability of averaged annual impedances of the Earth and their spatial gradients in Europe |
| title_full_unstemmed | Variability of averaged annual impedances of the Earth and their spatial gradients in Europe |
| title_short | Variability of averaged annual impedances of the Earth and their spatial gradients in Europe |
| title_sort | variability of averaged annual impedances of the earth and their spatial gradients in europe |
| url | https://journals.uran.ua/geofizicheskiy/article/view/116778 |
| work_keys_str_mv | AT semenovvyu variabilityofaveragedannualimpedancesoftheearthandtheirspatialgradientsineurope AT petrishchevms variabilityofaveragedannualimpedancesoftheearthandtheirspatialgradientsineurope |