摘要
本文根据半无限空间的线性热传导理论,利用我国288个气象台站1954—1989年0.8m,3.2m的地温资料计算了土壤热流。初步结果表明:(1)如果气象台站的地温资料长于11年,则滤波分析之后可用来计算平均的土壤热流(或地表热流);(2)本文与文献[4]给出的求导温度的方法精度相同;(3)以北京站为个例,分析说明了地温梯度(T_(3.2)T_(0.8)),年降水量和地震之间都有好的对应关系;(4)在绝大多数地区,地表热流与深层大地热流的方向和量级都一致,并且在如上两热流同时有计算值的区域,它们的分布也很一致;(5)在沙漠地区,地表热流与深层大地热流方向相反,这表明在沙漠下面某一深度上有一“热汇层”;(6)土壤热流的高值带与中国地震带的位置对应得非常好。
According to linear heat conduction theory in half limitedless space, the soil temperature data at the depths of 0.8 m and 3.2 m observed at meteorological stations from 1954 to 1989, have been used for calculating soil heat flux. Preliminary results are that: (a) If soil temperature data observed at meteorological stations are more than 11 years, they can be used for calculating the average of soil heat flux (also can be called earth surface layer heat flux) after filter analysis. (b) Both methods given in this paper and in Wang's(Wang, 1990) are the same precise for calculating thermal conductivity. (c) The soil temperature data observed in Beijing station have been analyzed, for example, which demonstrated that there exist good corresponding relationships among the soil temperature gradient, annual precipitation and earthquake.(d) Both the directions and the orders of magnitude of the heat flow at the earth surface layer and that at the deep are the same in the most of calculated area. And in the area where there are two kinds of heat flows mentioned above, their distribution patterns are accordance to each other.(e) The heat flows at the surface layer is contrary to that at the deep in desert, this means that there is a ' heat sink layer' at the adequate depth under the desert, (f) There is a great similarity between the locations of high bands of soil heat flux and the earthquake bands in China.
出处
《高原气象》
CSCD
北大核心
1992年第2期115-125,共11页
Plateau Meteorology
基金
地震科学联合基金(课题号90218)
LASG(大气科学与流体动力学开放实验室)资助
关键词
气象站
地温
土壤
热流
地震
The average of soil heat flux
Earthquake
The heat flow.
