单词 | geothermal gradient |
释义 | > as lemmasgeothermal gradient geothermal gradient n. the rate at which the temperature increases with depth below the surface of the ground or the surface of a lake. ΚΠ 1900 Amer. Jrnl. Sci. 159 434 (title) Geothermal gradient in Lake Michigan. 1971 Sci. Amer. Sept. 61/3 The influx of heat by conduction from the earth's interior has been determined from measurements of the geothermal gradient..and the thermal conductivity of the rocks involved. 2005 M. Bjornerud Reading Rocks ii. 46 The temperature increases steadily at a rate of about 55°F per mile (20°C per kilometer)... Some metamorphic rocks have mineral assemblages that accord with this geothermal gradient. < as lemmas |
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