地理科学 ›› 1986, Vol. 6 ›› Issue (3): 222-228.doi: 10.13249/j.cnki.sgs.1986.03.222

• 论文 • 上一篇    下一篇

拉萨地区土中热通量铅直分布的基本特征

陈万隆, 翁笃鸣   

  1. 南京气象学院
  • 出版日期:1986-05-20 发布日期:1986-05-20

ON BASIC CHARACTERISTICS OF VERTICAL DISTRIBUTION OF HEAT FLUX IN SOIL IN LHASA

Chen Wanglong, Weng Duming   

  1. Nanjing Institute of Meteorology
  • Online:1986-05-20 Published:1986-05-20

摘要: 本文应用分层土柱热含量方法,计算了拉萨地区土中各层次热通量,并对其随深度和时间的变化特征进行了分析。在分层计算土中热通量的基础之上,采用拉格朗日插值方法,计算出地面至3厘米各深处土中热通量,从而提出;为了实测通过地表面的土壤热通量,热流板的适宜埋置深度为距地面0.5厘米。

Abstract: The paper calculates and analyses vertical distribution of heat exchange and its change with depth and time,The amplitude of heat exchange in various layer of soil increases with depth,but its value decreases in index law,and is approximately proportional to average amplitude of temperalude gradient in the same layer of soil;The phase of heat exchange delays with depth in accordance with linearity,but the initial phase is earlier π/4 than average temperature wave in the same layer,On this basis of calculation of heat exchange,using Lagrange interpolation,the paper calculates the vertical distribution of heat flux of soil layer from surface to depth of 3cm and indicates that in order to measure heat flux of surface soil,it is better to put the transducer of flux plate under the surface soil about 0.5cm of depth.