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Kyungsik Kim (Pukyong National University) We mainly investigate dynamical properties and behaviors of complex networks in econphysical, atmospheric, oceanographic and seismological systems. Firstly, we treat group networks of KOSPI and KOSDAQ in econphysical system. We concern with the multifractal properties of three foreign exchange rates (USD-KRW, USD-JPY와 EUR-USD) that are quoted with different economic scales. We show that the multifractality of two foreign exchange rates with large and small economic scales is stronger than that of other foreign exchange rate with similar economic scales. In atmospheric system, We mainly estimate the generalized Hurst exponent, the Renyi exponent, and the singularity spectrum for tick data of rainfall, temperature, humidity. In particular, we discuss the recent findings that suggest the scaling exponents characterizing the multifractality. In oceanographic system, he complex network in meteorological phenomena is investigated from the sea surface temperature in the East, the Yellow, and the South Seas. For this study, we treat the Hurst exponents that are calculated from the rescaled range analysis in spring, summer, autumn, and winter. Particularly, we ¯nd in the East Sea that the same hub cell exists between three ranges of the Hurst exponent for winter. Lastly, in seismological system, we examine a seismic network by considering the cell resolution and the temporal causality in earthquakes of Korea and USA. Seismic activity data from the Korean peninsula are mapped onto a growing network with links between consecutive events. After we especially show a seismic network with spatial heterogeneity and scales in an area, topological properties of this seismic activity network are measured and found. |