岩石的热模型分析  

Analysis of Rock Thermal Model

作　　者：崔承禹[1] 肖青[1] 支毅乔[1] 张晋开[1] 

机构地区：[1]中国科学院遥感应用研究所

出　　处：《遥感学报》1998年第1期32-36,共5页NATIONAL REMOTE SENSING BULLETIN

基　　金：国家自然科学重大基金;国家自然科学基金

摘　　要：在几种岩石热辐射理论模型分析的基础上，考虑到岩石的红外光谱辐射特性和岩石的热性质──热惯量，建立岩石的热传输模型，并将实测数据代人，对岩石表面的一个日照周期内的变化做出计算，绘制出不同热惯量的几种岩石在日周期内表面温度变化曲线。由曲线看出，岩石热惯量大，其昼夜辐射温度变化小；热惯量小的岩石其昼夜辐射温差大。改变岩石的反照率、辐射系数和地面径向热流而得到岩石表面温度日变化曲线，可看出这３个因素只是改变了温度的量值，不像热惯量那样改变曲线的形状。The rock heat-transfer model which involves the rock infrared spectral behavior and thermal properties (thermal inertia) has been derived based on the analysis of several rock thermal models. Much lab or field data were used to compute the disrnal temperature variation on the rock surface. From the diurnal temperature variation curves of rocks with different thermal inertia, it can be shown that the diurnal temperature variation of the rock with high thermal inertia value is much larger than that of the rock with low thermal inertia value. When the albedo, emmissivity and vertical heat flux of the rock were changed respectively, only the magnitude of the rock diurnal temperature changed and the whole trend of temperature variation did not change greatly. This was very different from the case that the rock thermal inertia changed.

关 键 词：热模型 岩石 热传输 热惯量 

分 类 号：P584[天文地球—岩石学]