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Wavelet decompositi...
Wavelet decomposition for detection of chaotic characteristics of monthly precipitation at Mokpo, Korea
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- Jin, Young Hoon (författare)
- Lund University
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- Berndtsson, Ronny (författare)
- Lund University,Lunds universitet,Avdelningen för Teknisk vattenresurslära,Institutionen för bygg- och miljöteknologi,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Water Resources Engineering,Department of Building and Environmental Technology,Departments at LTH,Faculty of Engineering, LTH
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- Park, Sung Chun (författare)
- Dongshin University
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visa fler...
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Byong-Ho, Jun (redaktör/utgivare)
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Sang, Il Lee (redaktör/utgivare)
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Won, Seo Il (redaktör/utgivare)
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Gye-Woon, Choi (redaktör/utgivare)
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visa färre...
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(creator_code:org_t)
- 2005
- 2005
- Engelska 9 s.
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Ingår i: 31st IAHR Congress 2005 : Water Engineering for the Future, Choices and Challenges - Water Engineering for the Future, Choices and Challenges. - 8987898245 - 9788987898247 ; , s. 429-437
- Relaterad länk:
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https://lup.lub.lu.s...
Abstract
Ämnesord
Stäng
- In the present study, we apply deterministic chaos theory to investigate nonlinear dynamics in monthly precipitation at Mokpo, Korea, after wavelet decomposition. The wavelet transform is used not only for removal of noise but also for extraction of low and high frequency components in the data, representing low-dimensional dynamics. In order to determine an appropriate decomposition level for the wavelet transform, a correlation dimension analysis is applied for the respective low and high frequency signals after successive decomposition. The wavelet decomposition is performed up to 5th-level with orthogonal and compactly supported wavelets. Consequently, a long-term approximation (low frequency) and a short-term detail (high frequency) time series for the monthly precipitation obtained after 5th-level decomposition are investigated in terms of deterministic chaos theory. The data sets with low/high frequency components filtered by the wavelet transform are used for three-dimensional phase space analysis, respectively. Results show that both low and high frequency signals include clear chaotic signals and, therefore, might be governed by underlying dynamics based on different frequencies, respectively.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Correlation dimension
- Deterministic chaos theory
- Phase space
- Wavelet transform
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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