关键词: 中国, 日本, 热流值, 经纬度网格和条带, 经, 纬向热流变化规律

Abstract: In this paper, 167 heat flow values with detailed measurememt data published so far in the continental area of China have been collected and used for statistic analyses. The geographical distribution of the heat flow sites in the area is quite uneven. The heat flow values vary from 25 to 245 mWm^-2. Several methods have been employed to calculate the average heat flow. The results indicate that the representative heat flow for the continental area of China would lie in the range of 61 to 68 mWm^-2.A new data analysis method has been developped in the present work. Firstly, mean heat flow values for 1白1? longitude-latitude grids are calculated. Secondly, the mean grid values are used to average the mean values for the corresponding longitude and latitute strip, denoted as longitude and latitude heat flow separately. The results reveal that the difference between the. variations of longitude and latitude heat flow is significant. The variation of latitude heat flow seems to be characterized by a wave pattern. This phynomenon has been confirmed by the heat flow data from Japan and its surrounding oceanic area, which have also been reviewed in the same way. The wave pattern of latitude heat flow is shown not only in a stable wavelength of about 5?, but also in the well consistent wave cycles identified in the two areas. The author believes that the origin of the comparable latitude heat flow wave pattern is unlikely in the lithos-phere itself, but likely in the asthenosphere. Some geological and geophysical implications of the wave pattern have been briefly discussed.

Key words: China, Japan, heat flow, Longitude-latitude grids and strips, Variations of longitude and latitude heat flow