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Hilbert-Huang transform analysis of ...

Hsu, En-Ching.

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Hilbert-Huang transform analysis of hydrological and climatic time series.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Hilbert-Huang transform analysis of hydrological and climatic time series./
作者:	Hsu, En-Ching.
面頁冊數:	302 p.
附註:	Advisers: A. Ramachandra Rao; Dennis A. Lyn.
Contained By:	Dissertation Abstracts International68-04B.
標題:	Engineering, Civil. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3259971

Hilbert-Huang transform analysis of hydrological and climatic time series.
Hsu, En-Ching.

Hilbert-Huang transform analysis of hydrological and climatic time series. - 302 p.

Advisers: A. Ramachandra Rao; Dennis A. Lyn.

Thesis (Ph.D.)--Purdue University, 2006.

To accommodate the inherent non-linearity and non-stationarity of many natural time series, empirical mode decomposition (EMD) and Hilbert-Huang transform (HHT) provide an adaptive and efficient method. The HHT is based on the local characteristic time scale of the data. The HHT method provides not only a precise definition in time-frequency representation than the other conventional signal processing methods, but also more physically meaningful interpretation of the underlying dynamic processes. The EMD also works as a filter to extract the variability of signals with different scales and is applicable to non-linear and non-stationary processes. This promising algorithm has been applied in many fields since it was developed, but it has not been applied to hydrological and climatic time series. This study starts with several simulated data sets in order to investigate the capability of this method and to compare it to other conventional frequency-domain analysis methods that assume stationarity. Rainfall, streamflow, temperature, wind speed time series and lake temperature data are investigated in this study. The aim of the study is to investigate periodicity, long term oscillations and trends embedded in these data by using HHT. The analysis is performed in both the time and frequency domains. The results from HHT are compared to those from the multi-taper method which is based on Fourier Transform of the data. The results indicate that the HHT is clearly superior to MTM in delineating the stochastic structure of the data. Details about the data which cannot be investigated by traditional methods are clearly seen with HHT. The nonstationarities of climatic and hydrologic data are also brought out. The HHT is an excellent tool to investigate the characteristics of environmental and hydrologic time series.Subjects--Topical Terms:

783781
Engineering, Civil.

Hilbert-Huang transform analysis of hydrological and climatic time series.
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100 1 $a Hsu, En-Ching. $3 899536
245 1 0 $a Hilbert-Huang transform analysis of hydrological and climatic time series.
300 $a 302 p.
500 $a Advisers: A. Ramachandra Rao; Dennis A. Lyn.
500 $a Source: Dissertation Abstracts International, Volume: 68-04, Section: B, page: 2517.
502 $a Thesis (Ph.D.)--Purdue University, 2006.
520 $a To accommodate the inherent non-linearity and non-stationarity of many natural time series, empirical mode decomposition (EMD) and Hilbert-Huang transform (HHT) provide an adaptive and efficient method. The HHT is based on the local characteristic time scale of the data. The HHT method provides not only a precise definition in time-frequency representation than the other conventional signal processing methods, but also more physically meaningful interpretation of the underlying dynamic processes. The EMD also works as a filter to extract the variability of signals with different scales and is applicable to non-linear and non-stationary processes. This promising algorithm has been applied in many fields since it was developed, but it has not been applied to hydrological and climatic time series. This study starts with several simulated data sets in order to investigate the capability of this method and to compare it to other conventional frequency-domain analysis methods that assume stationarity. Rainfall, streamflow, temperature, wind speed time series and lake temperature data are investigated in this study. The aim of the study is to investigate periodicity, long term oscillations and trends embedded in these data by using HHT. The analysis is performed in both the time and frequency domains. The results from HHT are compared to those from the multi-taper method which is based on Fourier Transform of the data. The results indicate that the HHT is clearly superior to MTM in delineating the stochastic structure of the data. Details about the data which cannot be investigated by traditional methods are clearly seen with HHT. The nonstationarities of climatic and hydrologic data are also brought out. The HHT is an excellent tool to investigate the characteristics of environmental and hydrologic time series.
590 $a School code: 0183.
650 4 $a Engineering, Civil. $3 783781
690 $a 0543
710 2 $a Purdue University. $b Civil Engineering. $3 1020862
773 0 $t Dissertation Abstracts International $g 68-04B.
790 $a 0183
790 1 0 $a Lyn, Dennis A., $e advisor
790 1 0 $a Rao, A. Ramachandra, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3259971