Can we explain the post-2015 absence of the Chandler wobble?
(a)極運動(X成分)の観測値(赤)と年周成分の推定値(青)。(b)図(a)の観測値と推定値の差はチャンドラーウォブル(X成分)を示vす。(c)1890年以降のチャンドラーウォブルのX成分。
press release (in Japanese)
Abstract
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. As a free mode, the CW needs excitation one or more sources that were debated decades ago but are now attributed to the atmosphere, ocean, and possibly land water. Here, we show……
Read more on Earth Planets and Space
Article information:
Yamaguchi, R., Furuya, M. Can we explain the post-2015 absence of the Chandler wobble?. Earth Planets Space 76, 1 (2024).
DOI:10.1186/s40623-023-01944-y
