亚洲中东部“塑性流动－地震”网络系统及板内构造单元

“Plastic-Flow/Seismic” Network Systems and Tectonic Units in Central and Eastern Asia

对于地震的网络状分布特征的研究表明，在亚洲的中东部地区存在着两个网络系统，即分布于大部分地区的中东亚网络系统和位于其东南的华东南网络系统。根据多层构造模型，这些地震网络系统实际上是岩石圈下层（含下地壳和岩石圈地幔）塑性流动网络的一种显示。每一“塑性流动－地震”网络系统为不同类型的边界所围限，其中包括一段驱动边界以及若干段约束边界和泄流边界。本地区的两个塑性流动网络系统分别以喜马拉雅弧和台湾弧为驱动边界，对板块内部的构造变形、构造应力场、地震活动性、以及构造单元（亚板块、地体等）的划分起着控制的作用。

The study of the netlike earthquake distribution indicates that in the central and eastern Asian continent there are two network systems, i. e. the central and eastern Asia system extending over a large ares of it and the southeastern China system located on itssoutheastern part. In terms of the multi-layer tectonic model, they are a manifestation ofthe plastic-flow network systems in the lower lithosphere, including the lower crust andthe mantle lid. Each network system is enclosed by different types of boundaries, one driven boundary and some constrained and released boundaries. The two plastic-flow networksystems with the Himalayan and Taiwan arcs respectively to be their driven boundariescontrol the intraplate tectonic deformation, stress field, seismicity, and the subdivision oftectonic units (subplates, terranes, etc. ).