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单词 thermocline
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thermocline
thermocline n.
Brit. /ˈθəːmə(ʊ)klʌɪn/
,
U.S. /ˈθərməˌklaɪn/
a temperature gradient; esp. an abrupt temperature gradient occurring in a body of water; also, a layer of water marked by such a gradient, the water above and below being at different temperatures.
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the world > the earth > water > body of water > [noun] > temperature gradient
thermocline1898
the world > matter > properties of materials > temperature > [noun] > temperature gradient in water
thermocline1898
1898 Nat. Sci. May 297 As regards the production of the Thermocline, Prof. Birge believes that, in Lake Mendota at least, it is due to the concurrence of gentle winds and hot weather.
1902 Nature 6 Nov. 16/1 Throughout the circulating water above the thermocline, oxygen was abundant, but carbonic acid was absent... Just below the thermocline both gases were present.
1955 Sci. News Let. 2 Apr. 217/1 Investigations off the coast of California showed that skin divers can spot thermoclines, the layers of water which mark the sharp change in water temperature, in three different ways.
1973 Sci. Amer. Feb. 42/3 The coastal waters of Nova Scotia are characterized by a marked thermocline (a sharp drop in temperature as the depth increases), so that a free-swimming fish might encounter a wide range of water temperature.
1973 P. A. Colinvaux Introd. Ecol. xxxiii. 470 The animals have to feed in the warm surface waters..but they go down to cold water below the thermo~cline in daytime.
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