CAJ | 학술논문

综合分析了20世纪70年代以来发生在中国的14个强震前地磁和地下流体参量动态图像的时空演化特征,发现强震前这些参量均呈现十分明显的异常图形。这些图像十分复杂，且随时间不断变化，并与孕震过程有某种时空规律性联系。90年代地学家通过地震资料分析发现了幔羽现象。笔者设想核幔边界的幔羽磁流体物质上涌是地震电磁流体效应的一种可能成因。幔羽中的流体物质螺旋上涌至地壳的底部，并形成“蘑菇云”。流体在地壳中扩展或挤压，形成异常电流，可将其看作在孕震区地下10～20 km深处有一等效平面电流。再考虑到近地表的电磁环境——电离层电流体系的局部异常，计算了一个地下和电离层组成的等效平面电流模型在地面产生的磁场分布,结果与强震前地球磁场的零等变型异常动态图像较吻合。
종합분석료20세기70년대이래발생재중국적14개강진전지자화지하류체삼량동태도상적시공연화특정,발현강진전저사삼량균정현십분명현적이상도형。저사도상십분복잡，차수시간불단변화，병여잉진과정유모충시공규률성련계。90년대지학가통과지진자료분석발현료만우현상。필자설상핵만변계적만우자류체물질상용시지진전자류체효응적일충가능성인。만우중적류체물질라선상용지지각적저부，병형성“마고운”。류체재지각중확전혹제압，형성이상전류，가장기간작재잉진구지하10～20 km심처유일등효평면전류。재고필도근지표적전자배경——전리층전류체계적국부이상，계산료일개지하화전리층조성적등효평면전류모형재지면산생적자장분포,결과여강진전지구자장적령등변형이상동태도상교문합。
From synthesizing the spatial and temporal pattern of anomalous dynamic images for the parameters of geomagnetic field and underground fluid for 14 strong earthquake cases occurred in China since 1970,the authors found that those parameters reveal obvious anomalous images which are very complex and changeable,and bear a regular relation with seismogenic process.In the 1990’s geo-scientists, through the processing of seismic data, discovered the phenomenon of mantle plumes at the core-mantle boundary. The authors ,from the above results and the mantle plume phenomenon, put forward that the surging-up of hydromagnetic mass at the core-mantle boundary leads to seismo-hydromagnetic effect possibly.It is imagined that the fluid mass in the conductive mantle plumes gush up spirally to the lower part of the crust and from the mushroom cloud. Then, the fluid expanded or compressed in the crust. So, there is an equivalent planar current at a depth of between 10 and 20 km in the seismogenic region.Taking into consideration of the local anomaly of the ionospheric current system—the nearest electromagnetic environment—to the earth surface, the distribution of magnetic field by a planar current model in the seismogenic region has been calculated which coincided to a certain degree with the dynamic image of zero isoporic geomagnetic field prior to strong earthquakes.