TY - JOUR A1 - Ding, H. A1 - Shen, W. T1 - Search for the 531-day-period wobble signal in the polar motion based on EEMD JO - Nonlin. Processes Geophys. J1 - NPG VL - 22 IS - 4 SP - 473 EP - 484 Y1 - 2015/08/05 PB - Copernicus Publications SN - 1607-7946 UR - https://npg.copernicus.org/articles/22/473/2015/ L1 - https://npg.copernicus.org/articles/22/473/2015/npg-22-473-2015.pdf DO - 10.5194/npg-22-473-2015 ER -