摘要
通过对敦煌莫高窟第87窟窟内温度和相对湿度的监测和分析,得出温度和相对湿度年变化规律.窟内温湿度特征因位置不同而有所差异.窟内上部测点平均温度高于下部测点的,而上部测点相对湿度低于下部测点的.2-8月是窟内温度升高阶段,8月-翌年2月是窟内温度的降低阶段.窟内温度低于窟外温度时,上部测点的温度日较差较大;窟内温度高于窟外温度时,下部测点的温度日较差较大;离窟门越近温度日较差越大.通过对窟内外温度之差进行非线性拟合,得到了温度差随时间变化的曲线方程,发现其符合正弦曲线变化规律.温度差最大值出现在12月中旬,最小值出现在6月中旬,温度差为零的临界点出现在3月下旬和9月中旬.
Laws for annual variations in temperature and relative humidity were obtained by monitoring and analyzing the temperature and relative humidity of Cave 87 in Mogao Grottoes. The characteristics of temper-ature and relative humidity varied from place to place was found. The mean temperature of upper points was higher than that of the lower points, while the mean relative humidity was opposite to this. During the period of February-August, the interior cave temperature was on the ascent stage, during the period of August-the falling February, the interior cave temperature was on the descent stage. When the interior cave temperature was lower than that of the exterior, the daily temperature range of the upper points was larger. On the contrary, the daily temperature range of the lower points was larger when the interior cave temperature was higher than that of the exterior. Daily temperature range in the cave changed more significantly near the door. The curvilinear equation of time-varying temperature difference was obtained by the nonlinear fitting temperature difference between the interior and exterior of Cave 87. It changed following a sinusoidal fashion. The maximum value of temperature difference appeared in mid-December and the minimum value appeared in mid-June. The critical points, when the temperature difference was zero, appeared in late March and mid-September.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第1期1-6,共6页
Journal of Lanzhou University(Natural Sciences)
基金
中央高校基本科研业务费专项资金项目(lzujbky-2010-157,lzujbky-2011-113)
关键词
温度
相对湿度
日较差
温度差
莫高窟
temperature
relative humidity
daily range
temperature difference
Mogao Grottoes
