Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 15, issue 3
Articles | Volume 15, issue 3
https://doi.org/10.5194/nhess-15-393-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/nhess-15-393-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 15, issue 3
Research article
 | 
04 Mar 2015
Research article |  | 04 Mar 2015

Improvement for the multi-scale periodic characteristics revealing of precipitation signals and its impact assessment on soil hydrological process by combining HHT and CWT approaches

S. Yu, J. Yang, G. Liu, R. Yao, and X. Wang

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Short summary
The commonly used CWT method shows advantages in revealing signals' broad-scale periodicities, but also shows disadvantages in revealing fine-scale periodicities because of the embedded mode-mixing problem, which have been effectively improved by combining the improved HHT method. This novel idea is also helpful for many kinds of signals. Another important innovation is introducing the XWT and WTC methods into studying the interaction process between precipitation and salinization dynamics.
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