单词 | hypsithermal |
释义 | > as lemmashypsithermal hypsithermal adj. Brit. /ˌhɪpsɪˈθəːml/ , U.S. /ˌhɪpsəˈθərm(ə)l/ [ < Italian ipsotermico (A. Chiarugi 1936, in Nuovo giorn. bot. ital. XLIII. 55)] Geology designating that period of the geologically recent past (c7000 to c600 b.c.) when relatively warm conditions prevailed in the northern hemisphere; also absol.ΘΚΠ the world > the earth > structure of the earth > age or period > [adjective] > quaternary > glacial or boreal > specific warm period hypsithermal1957 the world > the earth > weather and the atmosphere > weather > [adjective] > of or relating to climate > in the geological past > specific genial1838 pluvial1868 boreal1876 sub-Atlantic1876 sub-boreal1876 interpluvial1907 intrapluvial1934 Atlantic1935 hypsithermal1957 1957 Bull. Geol. Soc. Amer. 68 1895 The period from 7000 b.c. to 600 b.c. is now known as the hypsithermal interval, rather than by its former but less suitable designations (postglacial climatic optimum, thermal maximum). 1957 Deevey & Flint in Science 1 Feb. 182/2 The long, warm interval spanned by Danish pollen zones V through VIII, which has been dated from approximately 7000 b.c. to approximately 600 b.c., we propose to call the hypsithermal interval. We have changed the spelling of Chiarugi's ipsotermico to conform with the English style of Greek adjectives and to express the customary distinction between hypsi-, high, and hypso-, a height. 1967 P. S. Martin & H. E. Wright Pleistocene Extinctions 135 The onset of widespread aridity [in Australia], which Gill (1955) equates with the Climatic Optimum or Hypsithermal of the Northern Hemisphere. 1968 R. W. Fairbridge Encycl. Geomorphol. 1051/2 Modern deposits may have obtained their maximum growth during the hypsithermal phase of postglacial time. < as lemmas |
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