New determination of period and quality factor of Chandler wobble, considering geophysical excitations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00473879" target="_blank" >RIV/67985815:_____/17:00473879 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.asr.2016.12.001" target="_blank" >http://dx.doi.org/10.1016/j.asr.2016.12.001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.asr.2016.12.001" target="_blank" >10.1016/j.asr.2016.12.001</a>
Alternative languages
Result language
angličtina
Original language name
New determination of period and quality factor of Chandler wobble, considering geophysical excitations
Original language description
Polar motion consists of both free (Chandler wobble, with approximately 14-month period) and forced components. The latter are caused by different excitations of geophysical origin. Very long-periodic (or secular) part is most probably due to post-glacial rebound, shorter periodic part (with dominant annual period) are caused mainly by motions of the atmosphere and oceans. Recently it was also proposed that impulse-like excitations due to geomagnetic jerks might be responsible for rapid changes of the amplitude and phase of Chandler wobble. In order to precisely determine the parameters of the free part, it is necessary to consider all these influences. We use the IERS combined solution C04 together with ERA atmospheric/oceanic excitations in the interval 1974.0-2014.0, and also additional excitations due to nine geomagnetic jerks, registered during this interval, to determine the period and quality factor of Chandler wobble, free from these geophysical effects.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA13-15943S" target="_blank" >GA13-15943S: The geophysical excitations in the motion of Earth's spin axis</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advances in Space Research
ISSN
0273-1177
e-ISSN
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Volume of the periodical
59
Issue of the periodical within the volume
5
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
1395-1407
UT code for WoS article
000394066000017
EID of the result in the Scopus database
2-s2.0-85008352531