Journal of earth system science | |
Fractal dimension analysis for seismicity spatial and temporal distribution in the circum-Pacific seismic belt | |
Yin Lirong^1,21  Li Xiaolu^1,32  Zheng Wenfeng^43  Yin Zhengtong^54  Song Lihong^45  | |
[1] Chongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing 400 715, P. R. China.^1;Department of Geographical and Sustainability Sciences, University of Iowa, Iowa City, IA 52242, USA.^2;Research Base of Karst Eco-environments at Nanchuan in Chongqing, Ministry of Nature Resources, School of Geographical Sciences, Southwest University, Chongqing 400 715, P. R. China.^3;School of Automation, University of Electronic Science and Technology of China, Chengdu 610 054, P. R. China.^4;School of Resources and Environment, Guizhou University, Guiyang 550 025, P. R. China.^5 | |
关键词: Fractal dimension analysis; circum-Pacific seismic belt; spatio-temporal distribution; | |
DOI : | |
学科分类:天文学(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
In this study, we present the fractal characteristics of the spatio-temporal sequence for seismic activity in the circum-Pacific seismic belt and vicinity regions, which is one of the most active seismic zones worldwide. We select the seismic dataset with magnitude $M \geq$ 4.4 in the circum-Pacific seismic belt region and its vicinity from 1900â2015 as the objects. Based on the methods of capacity dimension and information dimension, using ln(1/$\delta$)âln N($\delta$) of the relationship to evaluate and explain, the results show that (1) in the circum-Pacific seismic belt and the surrounding areas, for the seismic activity with magnitude $M \geq$ 4.4, the time series dimension is 0.63, the spatial distribution dimension is 0.52 and they have fractal structure. (2) For the earthquakes with $M \geq$ 7.0, the time series dimension increases greatly, which indicates that the cluster characteristics in time is greatly reduced. And the earthquakes with magnitude 7.0 $\geq$ $M \geq$ 4.4 have significant impact on the characterized by clustering in time in the study region. (3) There is significant fractal structure at spatio-temporal distribution of earthquakes in the circum-Pacific seismic belt. It reveals the tectonic movements keep continuous, obvious anisotropism characteristic of geological structure and the distribution of surface stress field is spatio-temporal heterogeneity in the study area.
【 授权许可】
CC BY
【 预 览 】
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