2006/04/01 by Prasanta K. Panigrahi, K. Prasanta Panigrahi, P. Manimaran +6 · 1 citation
Earth and Planetary Sciences · Environmental Science · Physics and Astronomy · #Chaotic Dynamics (nlin.CD) #FOS: Physical sciences #Landslides and related hazards #Plant Water Relations and Carbon Dynamics #Tree-ring climate responses #nlin.CD
paper · pdf · doi:10.48550/arxiv.nlin/0604002
4 pages, 7 figures
arxiv created 2006/04/01 · openalex publication_date 2006/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have studied periodicities and correlation properties of tree ring width chronology of deodar tree from Joshimath (1584 - 1999 years) and Uttarkashi (1500 - 2002 years) in the western Himalayas and the pre-monsoon (March-April-May) temperature anomalies (1876 - 2003) relative to 1961 -1990 mean, through wavelet analysis. Periodic behavior is observed in the tree ring chronology with periodicity in the form 11, 22, and 42 years. The analysis of the self-similar nature reveals long-range correlation with a Hurst exponent, H >0.5. These are anti-correlated with the temperature anomalies. An interesting inversion behavior is observed around the year 1750. The power spectral analysis of the time series corroborate the results of wavelet method.