Articles | Volume 15, issue 4
Nonlin. Processes Geophys., 15, 601–606, 2008
https://doi.org/10.5194/npg-15-601-2008
Nonlin. Processes Geophys., 15, 601–606, 2008
https://doi.org/10.5194/npg-15-601-2008

  24 Jul 2008

24 Jul 2008

A new method for abrupt change detection in dynamic structures

W. P. He1,2, G. L. Feng1,2, Q. Wu3, S. Q. Wan4, and J. F. Chou5 W. P. He et al.
  • 1National Climate Center, China Meteorological Administration, Beijing, China
  • 2Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
  • 3Chinese Academy of Meteorological Sciences, Beijing, China
  • 4Yangzhou Meteorological Bureau of Jiangsu Province, Yangzhou, China
  • 5Department of Atmospheric Sciences, Lanzhou University, Lanzhou, China

Abstract. Based on Detrended Fluctuation Analysis (DFA), we propose a new method – Moving Detrended Fluctuation Analysis (MDFA) – to detect abrupt change in dynamic structures. Application of this technique shows that this method may be of use in detecting time-instants of abrupt change in dynamic structures and we even find that the MDFA results almost do not depend on length of subseries, and are less affected by noise.