On the Influence Factors of Double Seismic Zones

详细信息   

• 责任者：Zhang Keliang (State Key Laboratory of Earthquake Dynamics ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Wei Dongping
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(11)
• 关键词：地震带 ; seismic belts ; 俯冲带 ; subduction zones ; 全球 ; global
• 页码：p.2838-2850
• 图表：7 illus., 2 tables, 63 refs.
• 分类号：0400
• 出版序号：20122236
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

The correlations among the layer separation, stress pattern of 39 Double Seismic Zones （DSZs） and subduction parameters have been analyzed.  The results indicated that: 1) type I DSZs are likely to exist in older (＞60 Ma) slabs, and the layer separation is correlated with dynamic parameters; 2) type II DSZs are detected mostly in younger (＜60 Ma) slabs and the features are controlled not only by dynamic factors but also local stress regime;  3) type I DSZs exist in slabs with thermal parameter greater than 5 000 km, whereas both Type I and II DSZs exist in slabs with thermal parameter less than 5 000 km;  and 4) the nature of the upper plate seems to be a controlling factor on the limit of the layer separation.