Attenuation and excitation of the∼ 6 year oscillation in the length-of-day variation

H Ding - Earth and Planetary Science Letters, 2019 - Elsevier
We carefully reanalyze the∼ 6-yr oscillation (SYO), which has been previously found in the
Earth's length of day variation (ΔLOD) and has been considered important for understanding …

[HTML][HTML] A 6-year cycle in the Earth system

J Pfeffer, A Cazenave, S Rosat, L Moreira… - Global and Planetary …, 2023 - Elsevier
Oscillations with a periodicity around 6 years have long been observed in the Earth's
rotation, expressed as changes in the length of day, and robustly attributed to dynamical …

Planetary scale geomagnetic secular variation foci in the last 400 years

V Dobrica, C Stefan, C Demetrescu - Global and Planetary Change, 2021 - Elsevier
The Earth's surface magnetic field and its secular variation (SV) are composed of several
constituents, at sub-centennial (60–90 years) and inter-decadal (20–30 years) timescales, of …

[HTML][HTML] The geomagnetic data of the Clementinum observatory in Prague since 1839

P Hejda, F Valach, M Revallo - Annales Geophysicae, 2021 - angeo.copernicus.org
The historical magnetic observatory Clementinum operated in Prague from 1839 to 1926.
The data from the yearbooks that recorded the observations at Clementinum have recently …

The numerical prediction of the Earth's polar motion based on an advanced multivariate algorithm

K Shi, H Ding, T Chen, C Zou - Frontiers in Astronomy and Space …, 2023 - frontiersin.org
Since there are complicated changes in the polar motion (PM) from sub-annual to decadal,
precisely predicting it is challenging. Here, we provide an advanced multivariate algorithm …

[PDF][PDF] 日长变化中长周期信号的提取及其特征分析

张欣峰, 刘根友 - 地球物理学进展, 2021 - dsjyj.com.cn
摘要地核与固体地球之间角动量的交换虽然可以明显引起十年尺度的日长变化,
但两者之间的耦合机制尚不明确. 为了对日长年代际变化进行更深入的分析 …

COMPORTAMIENTO SECULAR EN LOS DATOS GEOMAGNÉTICOS DE LOS OBSERVATORIOS PERMANENTES DE ARGENTINA

PA Sallago - Anales (Asociación Física Argentina), 2024 - SciELO Argentina
Resumen SALLAGO, PA. COMPORTAMIENTO SECULAR EN LOS DATOS
GEOMAGNÉTICOS DE LOS OBSERVATORIOS PERMANENTES DE ARGENTINA. An. AFA …

[PDF][PDF] Oscillations at sub-centennial time scales in the space climate of the last 150 years

V DOBRICĂ, C DEMETRESCU - Rev. Roum. Géophysique, 2021 - geodin.ro
The present study is focused on the evolution of the coupled system heliosphere–
magnetosphere, for the last 150 years, at the timescales of Hale (22 years) and Gleissberg …

[PDF][PDF] Geomagnetic data as a source of information on past evolution of the solar activity/space climate

It is common knowledge that during geomagnetic storms the horizontal component (H)
recorded by geomagnetic observatories is depressed; this is not compensated by increased …

[PDF][PDF] SUB-CENTENNIAL VARIATIONS IN THE HORIZONTAL COMPONENT OF THE GEOMAGNETIC FIELD. PRELIMINARY RESULTS

C ȘTEFAN, V DOBRICĂ, C DEMETRESCU - geodin.ro
The study is based on H geomagnetic data returned by the long-term model of the main
geomagnetic field gufm1 (Jackson et al., 2000) in a grid of 2, 5× 2.5 degrees of …