Multiple Time Scale Analysis of Precipitation in the Hengyang Basin

DOI

10.2991/icsd-17.2017.2How to use a DOI?

Keywords

Precipitation, Multiple time scale, Wavelet analysis, The Hengyang Basin

Abstract

This paper based on the monthly precipitation data of 9 surface meteorological stations in the Hengyang basin for 53 years (1960 to 2012), by using the methods of Morlet wavelet transform and Mexican hat wavelet analysis, the multi-time scales of precipitation of the Hengyang basin has analyzed. The results show that during the study period, the Hengyang basin has different time scales during the year and seasonal precipitation. The main periodic variation characteristics of quasi 24a, quasi 10a and quasi 3a time scales are existed in annual precipitation. And on the quasi 24a scale, the mutation points are 1963a, 1970a, 1977a, 1990a and 2004a. The characteristic period of spring and summer, or autumn and winter precipitation have highly similarity. And we speculate that the precipitation in the Hengyang basin tends to be less than normal in some time after 2012a.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qin Jiang
AU  - Yi-Min Huang
AU  - Wei-Yue Li
AU  - Jia-Hong Wen
PY  - 2017/07
DA  - 2017/07
TI  - Multiple Time Scale Analysis of Precipitation in the Hengyang Basin
BT  - Proceedings of the 3rd 2017 International Conference on Sustainable Development (ICSD 2017)
PB  - Atlantis Press
SP  - 6
EP  - 12
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsd-17.2017.2
DO  - 10.2991/icsd-17.2017.2
ID  - Jiang2017/07
ER  -