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Parametric Model of the Earth's Core Nutation from VLBI Data Analysis

Transactions of IAA RAS, issue 21, 226–229 (2010)

Keywords: радиоинтерферометрия со сверхдлинными базами, РСДБ-наблюдения, нутация земного ядра RFCN (Retrograde Free Core Nutation), координаты небесного полюса CIP (Celestial Intermediate Pole), период колебаний CIP, амплитудное затухание колебаний CIP, фазовая перестройка колебаний CIP, геофизическая природа возмущений RFCN

Abstract

The analysis of the Celestial Intermediate Pole (CIP) offsets, received from VLBI observations during last 25 years, has shown that amplitude and phase of CIP oscillation which are caused by Retrograde Free Core Nutation (RFCN) are changed in time. In particular, in 1999 there was an amplitude damping and phase shift then their period has increased almost for 20 days. These results are indicative of considerable excitation of RFCN, geophysical nature of which is yet to be explained

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V. Gubanov. Parametric Model of the Earth's Core Nutation from VLBI Data Analysis // Transactions of IAA RAS. — 2010. — Issue 21. — P. 226–229.

@article{gubanov2010,
  abstract = {The analysis of the Celestial Intermediate Pole (CIP) offsets, received from VLBI observations during last 25 years, has shown that amplitude and phase of CIP oscillation which are caused by Retrograde Free Core Nutation (RFCN) are changed in time. In particular, in 1999 there was an amplitude damping and phase shift then their period has increased almost for 20 days. These results are indicative of considerable excitation of RFCN, geophysical nature of which is yet to be explained},
  author = {V. Gubanov},
  issue = {21},
  journal = {Transactions of IAA RAS},
  keyword = {радиоинтерферометрия со сверхдлинными базами, РСДБ-наблюдения, нутация земного ядра RFCN (Retrograde Free Core Nutation), координаты небесного полюса CIP (Celestial Intermediate Pole), период колебаний CIP, амплитудное затухание колебаний CIP, фазовая перестройка колебаний CIP, геофизическая природа возмущений RFCN},
  pages = {226--229},
  title = {Parametric Model of the Earth's Core Nutation from VLBI Data Analysis},
  url = {http://iaaras.ru/en/library/paper/724/},
  year = {2010}
}

TY  - JOUR
TI  - Parametric Model of the Earth's Core Nutation from VLBI Data Analysis
AU  - Gubanov, V.
PY  - 2010
T2  - Transactions of IAA RAS
IS  - 21
SP  - 226
AB  -  The analysis of the Celestial Intermediate Pole (CIP) offsets,
received from VLBI observations during last 25 years, has shown that
amplitude and phase of CIP oscillation which are caused by Retrograde
Free Core Nutation (RFCN) are changed in time. In particular, in 1999
there was an amplitude damping and phase shift then their period has
increased almost for 20 days. These results are indicative of
considerable excitation of RFCN, geophysical nature of which is yet
to be explained
UR  - http://iaaras.ru/en/library/paper/724/
ER  -