Excitation of polar motion by atmospheric and oceanic variabilities

Details Excitation of polar motion by atmospheric and oceanic variabilities Excitation of polar motion by atmospheric and oceanic variabilities

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jsrs.meet..148n&link_type=abstract

In: Journées 2004 - systèmes de référence spatio-temporels. Fundamental astronomy: new concepts and models for high accuracy obs

Astronomy and Astrophysics

Astronomy

2

Polar Motion, Excitation

Scientific paper

It is widely accepted that atmospheric and oceanic variabilities play a major role in the excitation of polar motion at period longer than 10 days. However for shorter periods the effect is not clear. We have reanalysed the role of Atmospheric Angular Momentum (AAM) and Oceanic Angular Momentum (OAM) variabilities on the excitation of high frequency polar motion variations taking advantage of a recent Oceanic Angular Momentum (OAM) series derived by Ponte and Ali. We show that the correlation significant at periods between 2 and 10 days.

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