摘要
作为地震研究的基础性工作,地震目录分析一直以来备受关注。通过对近百年内(1915年3月—2015年3月)全球地震目录的收集、检验与分析,编制了全球MS≥6强震分级分布图谱。以此为基础,在不同时空尺度上定量分析了百年间全球强震的时空分布模式,利用以局部空间关联指数G*i为核心的统计指标可视化法划分了地震热区并探究了其迁移趋势。结果表明,地震活动在时间上具有相对活跃和平静交替的周期性,空间上也存在一定聚集规律。通过结合GIS和统计指标G*i可以直观反映地震热区分布及时空迁移的趋势。
As the basic work of earthquake research, the analysis of earthquake catalog has been much concerned. The global distribution of earthquakes with Ms ≥6.0 classification map by collecting is established, earthquake catalog in recent one hundred years is tested and analyzed. Based on that the temporal and spatial distribution pattern of global earthquake about one hundred years from various time and space scales is analyzed. Meanwhile, the hot spots by statistical index visualization method and probe into its migration trend is partitioned. The results show that the seismic activity is relatively active and calm in time. and there are certain cluster rules in space. It could reflect the distribution of earthquakes hot spots and its migration trend directly.
作者
杨涛
YANG Tao(School of Geosciences and Info-Physics, Central South University, Changsha H unan 410083,China)
出处
《现代测绘》
2017年第1期29-31,54,共4页
Modern Surveying and Mapping
基金
国家自然科学基金项目(4140413
U1531128)
关键词
强震
图谱
时空分布模式
地震热区
high-intensity earthquakes
atlas
temporal and spatial distribution pattern
earthquake hot spots
