CAJ | 학술논문

根据分形理论和方法，利用四川省和重庆市1950年1月—2009年9月（震级≥4.0）的地震数据和川渝地区大地构造图，计算一级和二级构造单元内地震空间分布的信息维，并对地震空间分布及其分维值与大地构造单元的关系进行讨论，结果显示：①川渝地区的一级和二级构造单元内的地震空间分布具有分形结构，二级构造单元的地震空间分布分维值差异比一级构造单元更明显；②地震空间分布分维值大小与构造单元内地震发生的次数没有互相对应的关系，而与地震点空间分布密度呈现显著的正相关关系；③地震空间分布分维值与构造单元复杂程度、地壳活动强弱之间有较好的联系，其信息维是构造单元活动性强弱的定量指标．
근거분형이론화방법，이용사천성화중경시1950년1월—2009년9월（진급≥4.0）적지진수거화천투지구대지구조도，계산일급화이급구조단원내지진공간분포적신식유，병대지진공간분포급기분유치여대지구조단원적관계진행토론，결과현시：①천투지구적일급화이급구조단원내적지진공간분포구유분형결구，이급구조단원적지진공간분포분유치차이비일급구조단원경명현；②지진공간분포분유치대소여구조단원내지진발생적차수몰유호상대응적관계，이여지진점공간분포밀도정현현저적정상관관계；③지진공간분포분유치여구조단원복잡정도、지각활동강약지간유교호적련계，기신식유시구조단원활동성강약적정량지표．
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 M unicipality from January 1950 to September 2009 (magnitude ≥4 .0) and tecton‐ic 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) Si‐chuan Province and Chongqing M unicipality have fractal structure in the primary and secondary tectonic u‐nit .T he difference of seismic point relations dimension spatial distribution in the second‐order tectonic u‐nits 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 ac‐tivity of crustal motion the earth ,w hich has information dimension as a quantitative indicator .