干旱区生态环境知识资源中心

The remits of temperature measurements in six boreholes, drilled near the west shores of the Lake Nasser in the Aswan region in the Nubian Desert, are reported. Temperature-depth profiles, complemented by thermal conductivity determinations of surface rock samples, were used to calculate the existing range of heatflow density in the region as 40 divided by 60 mWm(-2) which is consistent with the values from the adjacent areas, reported in the literature. The extrapolated mean annual ground surface temperatures amount, on the average, to 30 degrees C, which is 3 K higher than the mean annual air temperature in the region.