地球内部物理圈层形成演化模式  

Evolution pattern of physical layers in earth interior

作　　者：李金宝[1] 

机构地区：[1]长安大学资源学院

出　　处：《中国科技信息》2005年第12C期34-35,共2页China Science and Technology Information

摘　　要：本文从引力势能做功转化为热能之间的关系推导出固体地核半径大小的方程式为:,在这个公式中C是铁的比热(4.6×106尔格/g℃),ΔT是铁的熔点温度(1535℃),ρ是固体地核的密度(约10g/cm3),G是万有引力常数,代入数据可求得地核半径R增大到1228km时吸引的铁质开始熔化。固态地核实际半径是1251km,与理论计算相差23km。地球天文阶段演化过程中使地球内部物理圈层出现:固→沉→液、固→沉→液、固→沉→液→气这样一种循环往返的规律。Based on the volume of the thermal energy translated into by attraction potential energy by power, the author deduces the equation about radius of solid earth core, the equation: R=1.194(ΔT?C/Gρ)1/2, and C is specific heat of iron, ΔT is fusion point of iron(1535℃), ρ is density of solid earth core(about 10g/cm3), G is gravitational constant. It will be concluded that absorbent chalybeate begins to melt when the radius of earth core(R) increase to 1228km. Comparing the practical radius of solid earth core(1251km) with the result of theoretical calculation, it will be 23km difference. such as solid→subsidence→liquid, Physical layers in earth interior appeared a periodic regularity solid→subsidence→liquid, solid→subsidence→liquid→gas.

关 键 词：地球内部物理 形成演化模式 圈层 万有引力常数 引力势能 熔点温度 理论计算 演化过程 核半径 方程式 固体 地核 

分 类 号：P313[天文地球—固体地球物理学] P611[天文地球—地球物理学]