EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

The status of Chandler wobble

Guocheng Wang1, Lintao Liu1, Jinzhao Liu2, and Yi Tu3
Guocheng Wang et al.
  • 1Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China (
  • 2The First Monitoring and Application Center, China Earthquake Administration, Tianjin, China.
  • 3College of Civil Engineering and Architecture, China Three Gorges University, Yichang, China

The Chandler wobble (CW) and Annual wobble (AW) are the main components of the Earth’s Polar motion, which play an important role in our understanding of their excitations. The Fourier Basis Pursuit Band-Pass Filtering (FBPBPF) method, which can effectively suppress the edge effect, are applied to extract the CW and AW in Earth's polar motion during 1900-2016. Through analyze the variation of CW extracted by the FBPBPF method, we find that the amplitude of the CW has been diminishing since 1995. However, the amplitude of the CW had stopped decline in the last year, and start to increase at now.

How to cite: Wang, G., Liu, L., Liu, J., and Tu, Y.: The status of Chandler wobble, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-2996,, 2020

This abstract will not be presented.