洋脊裂谷与上涌流动

洋脊中轴裂谷是板块的创生边界,多年来一直吸引着地球科学家的注意。但是,对于中轴裂谷的成因,至今没有得到圓满的解释。本文利用我们在文献[1]中所提出的上涌流动模式,算出了裂谷的深度和宽度、裂谷内底宽度等。这些结果均与观测数据符合,从而给出了洋脊中轴裂谷地形的动力学解释。

RIFT VALLEY OVER OCEANIC RIDGE AND UPWELLJNG FLOW

The rift valley over the axial part of oceanic ridge is the acereting plate boundary. In spite of the great interest among earth scientists, the cause of its formation is still unexplained. In the present paper the topographic profile of the rift valley is obtained by means of a model of upwelling flow. Calculations of the depths and widths of the rift valleys tally quantitatively with actual observations. Thus, it is believed that this model may provide a certain approach to the dynamics of the rift valley formation.