【摘要】 基于地震灾害发生的随机性和不确定性,运用分形、混沌理论对汶川大地震发生的多次地震及其地震强度进行了分维特征研究。研究表明地震强度在时间上具有自相似性,且其关联维数d2在0.555 3～3.469 2之间。由于地震强度具有分形特性,因此震强分维数是研究地震的一个重要指标。更多还原

【Abstract】 Based on the randomness and uncertainty of earthquake struck,this article applies fractal theory and chaos theory to give a fractal research on the multiple earthquakes in Wenchuan and its magnitude.The research result indicates that the earthquake magnitude bears self-similarity on the time series,and its correlation dimension is between 0.555 3 and 3.469 2.Because earthquake magnitude bears fractal characteristics,magnitude fractal dimension is one key index to study on earthquake.更多还原