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《Earthquake》 2003-01
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On the relation between multifractal anomaly of crustal deformational field and strong earthquakes

LI Meng, ZHU Lingren, LONG Haiying(Seismological Bureau of Xinjiang Uygur Autonomous Region, Urumqi 830011, China)  
using the gradient probability of crustal vertical deformation rate as the variable, the multifractal properties of several areas where strong earthquake occurred were studied, including Tangshan area, Hexi area and Beijing area. The results show that Dq value ranges of multifractal spectra widen, that is, the Dq values in the -q side climb up, and those in the +q side drop down one to several years before strong earthquake occurrence. It suggests that the strengthening process of deformation distribution from subinhomogeneity to inhomogeneity (complexity) before earthquake occurrence is common or repeatable. So, it can be inferred that the anomaly of deformation field complexity strengthening maybe a qualitative precursory index for strong earthquake prediction.
【Fund】: 新疆维吾尔自治区地震局地震科学基金资助项目(200007)
【CateGory Index】: P315.72
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