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Instability of secular variations in the horizontal components of the geomagnetic field : quasi-periodic fluctuations and jerks. / Ladynin, A. V.

In: Russian Geology and Geophysics, Vol. 58, No. 9, 01.09.2017, p. 1106-1117.

Research output: Contribution to journal › Article › peer-review

Harvard

Ladynin, AV 2017, 'Instability of secular variations in the horizontal components of the geomagnetic field: quasi-periodic fluctuations and jerks', Russian Geology and Geophysics, vol. 58, no. 9, pp. 1106-1117. https://doi.org/10.1016/j.rgg.2017.08.007

APA

Ladynin, A. V. (2017). Instability of secular variations in the horizontal components of the geomagnetic field: quasi-periodic fluctuations and jerks. Russian Geology and Geophysics, 58(9), 1106-1117. https://doi.org/10.1016/j.rgg.2017.08.007

Vancouver

Ladynin AV. Instability of secular variations in the horizontal components of the geomagnetic field: quasi-periodic fluctuations and jerks. Russian Geology and Geophysics. 2017 Sept 1;58(9):1106-1117. doi: 10.1016/j.rgg.2017.08.007

Author

Ladynin, A. V. / Instability of secular variations in the horizontal components of the geomagnetic field : quasi-periodic fluctuations and jerks. In: Russian Geology and Geophysics. 2017 ; Vol. 58, No. 9. pp. 1106-1117.

BibTeX

@article{d6d143f8c5174ad8b327a1847725cffa,
title = "Instability of secular variations in the horizontal components of the geomagnetic field: quasi-periodic fluctuations and jerks",
abstract = "Two types of fluctuations, with a short period (SPFs, 3 ± 0.15 years) and with a long period (LPFs, 10-70 years), have previously been found in the secular variation rate (SVR) of the horizontal component H, the vertical component Z, and the inclination I of the geomagnetic field (GMF). The fluctuations of SVR for the horizontal components of the GMF (X, Y, and D) and the periods and amplitudes of their SPFs are estimated in this study. The SVR fluctuations for Y and D are synchronous and have identical phases, and the SVR fluctuations for X are opposite to them in phase, except the areas near the magnetic poles. The SPF periods for X, Y, and D are almost the same (2.80 ± 0.14 years). Jerks in the SVR of Y, especially significant in Europe in 1969 and 1978, were studied. It is shown that jerks are a component of long-period fluctuations in the SVR of Y; they appear at the coincidence of extrema of the same sign in LPFs and SPFs. Jerks need not be considered a special phenomenon because they can be presented as the sum of quasi-periodic LPFs and SPFs.",
keywords = "amplitudes of fluctuations, geomagnetic field, horizontal components, jerks, periods of fluctuations, quasi-periodic fluctuations, secular variation rate, ORIGIN, IMPULSE, MANTLE",
author = "Ladynin, {A. V.}",
year = "2017",
month = sep,
day = "1",
doi = "10.1016/j.rgg.2017.08.007",
language = "English",
volume = "58",
pages = "1106--1117",
journal = "Russian Geology and Geophysics",
issn = "1068-7971",
publisher = "Elsevier Science B.V.",
number = "9",

}

RIS

TY - JOUR

T1 - Instability of secular variations in the horizontal components of the geomagnetic field

T2 - quasi-periodic fluctuations and jerks

AU - Ladynin, A. V.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Two types of fluctuations, with a short period (SPFs, 3 ± 0.15 years) and with a long period (LPFs, 10-70 years), have previously been found in the secular variation rate (SVR) of the horizontal component H, the vertical component Z, and the inclination I of the geomagnetic field (GMF). The fluctuations of SVR for the horizontal components of the GMF (X, Y, and D) and the periods and amplitudes of their SPFs are estimated in this study. The SVR fluctuations for Y and D are synchronous and have identical phases, and the SVR fluctuations for X are opposite to them in phase, except the areas near the magnetic poles. The SPF periods for X, Y, and D are almost the same (2.80 ± 0.14 years). Jerks in the SVR of Y, especially significant in Europe in 1969 and 1978, were studied. It is shown that jerks are a component of long-period fluctuations in the SVR of Y; they appear at the coincidence of extrema of the same sign in LPFs and SPFs. Jerks need not be considered a special phenomenon because they can be presented as the sum of quasi-periodic LPFs and SPFs.

AB - Two types of fluctuations, with a short period (SPFs, 3 ± 0.15 years) and with a long period (LPFs, 10-70 years), have previously been found in the secular variation rate (SVR) of the horizontal component H, the vertical component Z, and the inclination I of the geomagnetic field (GMF). The fluctuations of SVR for the horizontal components of the GMF (X, Y, and D) and the periods and amplitudes of their SPFs are estimated in this study. The SVR fluctuations for Y and D are synchronous and have identical phases, and the SVR fluctuations for X are opposite to them in phase, except the areas near the magnetic poles. The SPF periods for X, Y, and D are almost the same (2.80 ± 0.14 years). Jerks in the SVR of Y, especially significant in Europe in 1969 and 1978, were studied. It is shown that jerks are a component of long-period fluctuations in the SVR of Y; they appear at the coincidence of extrema of the same sign in LPFs and SPFs. Jerks need not be considered a special phenomenon because they can be presented as the sum of quasi-periodic LPFs and SPFs.

KW - amplitudes of fluctuations

KW - geomagnetic field

KW - horizontal components

KW - jerks

KW - periods of fluctuations

KW - quasi-periodic fluctuations

KW - secular variation rate

KW - ORIGIN

KW - IMPULSE

KW - MANTLE

UR - http://www.scopus.com/inward/record.url?scp=85031746971&partnerID=8YFLogxK

U2 - 10.1016/j.rgg.2017.08.007

DO - 10.1016/j.rgg.2017.08.007

M3 - Article

AN - SCOPUS:85031746971

VL - 58

SP - 1106

EP - 1117

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 9

ER -

ID: 10522053