Abstract
DURING the autumn vacation, we made geomorphological and biological surveys in the Red Sea hills and coastal plain north of Port Sudan. Details of these will be published later. While trekking among uncharted jebels in the area 36.50° E., 21.00° N., high surface temperatures were recorded, especially on wind-blown sand. For example, on September 24, 1960, at 1300h. local time, when the air temperature varied between 40.5 and 43.5° C. (105–110° F.) the surface sand temperature was 83.5° C. (182.5° F.)as measured with an electrical resistance thermometer employing thermistors1. The only animal to be seen was a solitary grasshopper. Four hours later, when the temperature had fallen to 32.0° C. (90.0° F.), the sand temperature had dropped 45.5° C. to 38.0° C. (100.5° F.) and some ants were crawling over it.
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References
Cloudsley-Thompson, J. L., Ann. Mag. Nat. Hist., (12), 9, 305 (1956).
Buxton, P. A., “Animal Life in Deserts” (Arnold, London, 1923).
Williams, C. B., in “Biology of Deserts”, edit. by Cloudsley-Thompson, J. L. (Inst. Biol., London, 1954).
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BERRY, L., CLOUDSLEY-THOMPSON, J. Autumn Temperatures in the Red Sea Hills. Nature 188, 843 (1960). https://doi.org/10.1038/188843a0
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DOI: https://doi.org/10.1038/188843a0
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