Chandler wobble in variations of the Pulkovo latitude for 170 years

Miller, Natalia

doi:10.1134/s0038094611040058

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…The Chandler wobble (CW) discovered by Seth Carlo Chandler in 1891 [2,3] is one of the main and most complicated components of the Earth's rotation, and numerous papers were devoted to investigation of the CW variations, such as changes in the CW amplitude and phase. A brief overview of these studies is given [4][5][6][7][8][9][10] and papers cited therein. The main result [4] was detecting, for the first time, a large jump in the CW phase in the 2000s and a simultaneous deep minimum of the CW amplitude.…”

Section: Introductionmentioning

confidence: 99%

Revisiting Recent Amplitude and Phase Variations of the Chandler Wobble and Free Core Nutation

Malkin

2023

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The paper is devoted to the analysis of two components of the Earth’s rotation, Chandler wobble (CW) and free core nutation (FCN). They are oscillations with near-constant periods but variable amplitude and phase. The variations of the amplitude and phase of the CW and FCN have already been considered in the literature, and both showed similar behavior such as a recent significant decrease of the amplitude and large phase change. However, the CW and FCN amplitude and phase variations are, to a large extent, predicted for the current epochs, and their today’s variations need regular updates with obtaining new observations. In this work, the CW and FCN parameters have been re-computed using the latest data and compared with the data published earlier. It was found that the currently obtained amplitude and phase variations generally agreed with the data published earlier. The main difference is that the epochs of the current minimum of amplitude and phase jump or both CW and FCN happened somewhat later than was predicted in previous publications. The delay is about two years for the CW relative to the prediction made in 2010 and about one year for the FCN with respect to the prediction made in 2022.

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Section: Introductionmentioning

confidence: 99%

Revisiting Recent Amplitude and Phase Variations of the Chandler Wobble and Free Core Nutation

Malkin

2023

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“…Detailed analysis of the method was given in . Using the SSA method several important results were obtained in analysis of the Chandler wobble [Miller, 2011[Miller, , 2014Miller, Vorotkov, 2013] and nutation series . Advantages of singular spectral analysis for studying the long-period time series with involved structure have been demonstrated.…”

Section: Fig1 Measuring Of Point-cloudmentioning

confidence: 99%

“…The paper [Miller, 2011] studies the Chandler component of polar motion, obtained from variations in the Pulkovo latitude over 170 years . The author employed different methods of analysis of non-stationary time series, such as wavelet analysis, methods of band-pass filtering, singular spectral analysis, and Fourier and Hilbert transforms.…”

Section: Earth's Rotationmentioning

confidence: 99%

National Report for the IAG of the IUGG 2011-2014

Savinykh¹,

Кафтан²,

Malkin³

et al. 2015

Geoinformatics Research Papers

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In this National Report are given major results of researches conducted by Russian geodesists in 2011-2014 on the topics of the International Association of Geodesy (IAG) of the International Union of Geodesy and Geophysics (IUGG). This report is prepared by the Section of Geodesy of the National Geophysical Committee of Russia. In the report prepared for the XXVI General Assembly of IUGG (Czhech Republic, Prague, 22 June -2 July 2015), the results of principal researches in geodesy, geodynamics, gravimetry, in the studies of geodetic reference frame creation and development, Earth's shape and gravity field, Earth's rotation, geodetic theory, its application and some other directions are briefly described. For some objective reasons not all results obtained by Russian scientists on the problems of geodesy are included in the report.В данном Национальном отчете представлены основные результаты исследований, проводимых российскими геодезистами в 2011-2014 гг., по темам, соответветствующим направлениям деятельности Международной ассоциации геодезии (МАГ) Международного геодезического и геофизического союза (МГГС). Данный отчет подготовлен Секцией геодезии Национального геофизического комитета Российской академии наук. В данном отчете, подготовленном к XXVI Генеральной ассамблее МГГС (Чехия, Прага, 22 июня -2 июля 2015 г.), представлены основные результаты исследований в области геодезии, геодинамики, гравиметрии, создания геодезических систем отсчета, формы и гравитационного поля Земли, вращения Земли, теории геодезии и ее приложений. По понятным причинам, в отчет были включены не все результаты, полученные российскими учеными в области геодезии.

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