Abstract: By using the method of finite element, we have simulated the evolution and the thermal structure of the central Bohai basin area and computed the temperature field and the heat flow distribution resulting from the uplifted upper mantle and the sedimentary layer respectively in the area.The result shown in this paper is quite consistent with the observations of heat flow distribution in the Bohai and Tangshan areas. And in the later part of this paper, there is a datailed discussion on the relation between the cause of earthquakes and thermal stress produced by the uplifted upper mantle and the sedimentary layer in the Central Bohai basin area.

Key words: Heat flow, Thermal transfer, Thermal uplift, Sedimentary layer, Finite element, Central Bohgi basin

摘要： 本文采用空间有限元和时间有限差分法模拟了渤中盆地区域的演化历史和地下热结构,并分别计算了渤中上地幔的热隆起与浅部的沉积层对渤中盆地内部温度场的影响。文中得到的计算结果较好地解释了渤中盆地地区热流正异常的观测事实,据此,对渤中盆地在形成过程中产生的热应力与地震孕震力源的关系也进行了一些探讨。

关键词: 热流, 热传递, 热隆起, 沉积层, 有限元, 渤中盆地