Title: On Seismic Spatial Fractal Research of Tectonic Units Based on GIS——Taking Sichuan Province and Chongqing Municipality as an Example
Abstract: According to fractal theory,primary and secondary structural elements have been studies within the information-dimensional spatial distribution of earthquakes by means of the seismic data of Sichuan Province and Chongqing Municipality from January 1950 to September 2009(magnitude≥4.0)and tectonic units in Sichuan Province and Chongqing Municipality.And the relation between spatial distribution of earthquakes,fractal dimension value,and tectonic units has been discussed.The results show that 1)Sichuan Province and Chongqing Municipality have fractal structure in the primary and secondary tectonic unit.The difference of seismic point relations dimension spatial distribution in the second-order tectonic units is more pronounced than first-order tectonic units.2)There is no corresponding relationship between earthquake spatial distribution fractal dimension values and the number of the earthquake in tectonic unit.But it has a significant positive correlation with spatial distribution density.3)In total,earthquake spatial distribution fractal dimension values have a better link between the complexity of tectonic units and the activity of crustal motion the earth,which has information dimension as a quantitative indicator.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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