Results 1 to 10 of about 61,235 (201)

Measuring chandler wobble amplitude variations using IERS EOP C04 data [PDF]

Serbian Astronomical Journal, 2023
We analyzed the Earth's long-term polar motion using the time series IERS EOP C04 (International Earth Rotation and Reference Systems Service - IERS; Earth Orientation Parameters - EOP; Combination of four (04) techniques - C04), from 1984 to ...
Damljanović G., Vasilić V.
doaj   +2 more sources

Analysis of 25 Years of Polar Motion Derived from the DORIS Space Geodetic Technique Using FFT and SSA Methods [PDF]

Sensors, 2020
Polar motion (PM) has a close relation to the Earth’s structure and composition, seasonal changes of the atmosphere and oceans, storage of waters, etc.
Qiaoli Kong, Linggang Zhang, Litao Han, Jinyun Guo, Dezhi Zhang, Wenhao Fang   +5 more
doaj   +2 more sources

Variations of seismic activity caused by the Chandler Wobble [PDF]

E3S Web of Conferences, 2019
The problem of the correlation of the global dynamic phenomenon “Chandler wobble” with the local dynamics in different parts of the Earth’s crust and lithosphere is wide of the solution.
Blagoveshchenskaya Elena, Lyskova Evgenia, Sannikov Konstantin   +2 more
doaj   +2 more sources

Revisiting the period and quality factor of the Chandler wobble and its possible geomagnetic jerk excitation

Geodesy and Geodynamics, 2022
The period and quality factor of the Chandler wobble (CW) are useful for constraining the Earth's internal structure properties, such as the mantle elasticity.
Yachong An, Hao Ding
doaj   +2 more sources

Chandler Wobble and Free Core Nutation: Theory and Features

Journal of Astronomy and Space Sciences, 2019
Being a torque free motion of the rotating Earth, Chandler wobble is the major component in the Earth’s polar motion with amplitude about 0.05-0.2 arcsec and period about 430-435 days.
Sungho Na, Kyoung-Min Roh, Jungho Cho
doaj   +2 more sources

Can we explain the post-2015 absence of the Chandler wobble?

Earth, Planets and Space
Recent polar motion data do not show a 6-year beat and indicate the absence of the Chandler wobble (CW), whereas we could observe the 6-year beat even in the 1920-40 s when the CW amplitude was known to be smallest.
Ryuji Yamaguchi, Masato Furuya
doaj   +2 more sources

Can we estimate the period and quality-factor of the Chandler wobble using only the observed polar motion data?

Earth, Planets and Space
The clear ~ 6-year beat in the polar motion data has allowed us to consider the Chandler period (P) as ~ 1.2 years, albeit approximately, from solely the observed polar motion data.
Ryuji Yamaguchi, Masato Furuya
doaj   +2 more sources

Cryospheric Excitation on the Earth's Chandler Wobble and Implications From a Warming World

Geophysical Research Letters
Leveraging Gravity Recovery and Climate Experiment mascon products spanning from April 2002 to September 2023, we, for the first time, ascertain the substantial influence of cryospheric mass variations on Earth's Chandler wobble (CW).
CanCan Xu, Fang Chen, ChengLi Huang, YongHong Zhou, QiQi Shi, PengShuo Duan, XueQing Xu   +6 more
doaj   +2 more sources

Formula for the Chandler Period (Free Wobble of Planetary Bodies)

Geophysical Research Letters
If the rotational equilibrium of a planetary body is disturbed, the rotation pole responds with a cyclical motion. The duration of one cycle is referred to as the Chandler period, and, when viewed from space, the body wobbles.
V. Patočka, M. Walterová
doaj   +2 more sources

Chandler wobble: Stochastic and deterministic dynamics [PDF]

, 2015
We propose a model of the Earth’s torqueless precession, the “Chandler wobble,” as a self-oscillation driven by positive feedback between the wobble and the centrifugal deformation of the portion of the Earth’s mass contained in circulating fluids.
Alejandro Jenkins
semanticscholar   +4 more sources