Wavelet based assessment of the relationship between hydrological time series in South East Australia
Date
2012
Authors
Kamruzzaman, M.
Beecham, S.
Metcalfe, A.V.
Editors
Daniell, K.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Water and climate : policy implementation challenges : proceedings of the 2nd practical responses to climate change conference, 2012 / Daniell, K. (ed./s), pp.66-72
Statement of Responsibility
Conference Name
2nd practical responses to climate change conference (1 May 2012 - 3 May 2012 : Canberra, ACT)
Abstract
The aim of this study is to use wavelet analysis to investigate the relationship between temperature and rainfall time series at seven South Australian (SA) rainfall stations. We explain the discrete wavelet transformation (DWT) and its inverse (IDWT). The relationship between the DWT coefficients of rainfall and the DWT coefficients of the corresponding temperature at different scales and shows the distinction between seasonal variation and shorter term changes in weather at seven stations South Australia is investigated. The relationship is described in terms of correlations, and lagged correlations, between a wavelet coefficient at each level, for the linear and quadratic components of the two time series. The results are compared with the cross-correlograms between rainfall and temperature. It is shown that a significant non-linear relationship can be identified with DWT.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
Copyright 2012 Engineers Australia