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IJMS Vol.36(2) [June 2007] >

Title: Multifractal thermal characteristics of the western Philippine Sea upper layer
Authors: Chu, Peter C.
Hsieh, Chung-Ping
Keywords: Multifractal structure
High-order structure function
Singular measure
Power law
Multifractal plane
Issue Date: Jun-2007
Publisher: CSIR
Abstract: Multifractal characteristics of the upper layer (above 140 m depth) thermal structure in the western Philippine Sea near Taiwan are analyzed using high-resolution, digital thermistor chain data. The power spectra at all the depths have multi-scale characteristics with the spectral exponent β in the range of (1, 2), which indicates nonstationary with stationary increments. The graph dimension varies from higher values such as 1.71 (in sublayer: 60 m), to lower values such as 1.59 (in second thermocline: 120 m). However, the information dimension varies slightly from 0.929 to 0.941. The multi-dimensional structure is stronger in nonstationarity (graph dimension) than in intermittency (information dimension). These results provide useful information for investigating turbulence structure in the upper layer of the western Philippine Sea.
Page(s): 141-151
ISSN: 0379-5136
Source:IJMS Vol.36(2) [June 2007]

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