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从洋中脊上升的地慢物质带上来的大量热量，使在洋中脊裂谷处的海底热流及温度最高，向海沟逐渐减小．由于热胀冷缩，海底地势在洋中脊处最高．作者根据板块模型由一维运动物体的热传导方程推出裂谷处上升物体的温度分布公式．用此分布公式作为垂直边的边界条件，严格地求解了运动板块的二维运动物体热传导方程．用此方程研究了各参数与观测量之间的关系．通过改变公式中的参数值，使计算的理论曲线与实测海底热流一年龄及海底深度一年龄曲线拟合，从而求出了板块的厚度Ｌ＝９７ｋｍ，地幔上升速度ｕ＝３．ｇｍｍ／ａ，热膨胀系数ａ＝３．３７×１０－５／℃及温度分布．该方法克服了在洋中脊处理论热流值趋于无限大的问题，并可以计算出地幔上升流的速度及宽度．
The large amount of heat brought up by the slow mass rising from mid-oceanic ridges depresses the seafloor heat flux and temperature at the mid-ocean ridge crests to the trenches. Due to thermal expansion and contraction, the sea bottom ridge is highest in mid-ocean ridge. Based on the plate model, the authors derive the temperature distribution of the ascending object in the rift valley from the heat conduction equation of one-dimensional moving objects. Using this distribution formula as the boundary condition of the vertical edge, the two-dimensional moving body heat conduction equation of the moving plate is solved strictly. This equation was used to study the relationship between each parameter and the observed value. By changing the parameter values in the formula, the calculated theoretical curve is fitted with the measured seafloor heat age and seafloor depth-age-one curve, and the plate thickness L = 97km and the mantle rising velocity u = 3 are obtained. gmm / a, thermal expansion coefficient a = 3.37 × 10-5 / ℃ and temperature distribution. This method overcomes the problem that the heat flux tends to infinity in mid-ocean ridge crest processing, and the velocity and width of the ascending stream in the mantle can be calculated.