| 单词 | ocean basin |
| 释义 | > as lemmasocean basin ocean basin n. a depression of the earth's surface occupied by an ocean. ΘΚΠ the world > the earth > water > sea or ocean > region of sea or ocean > [noun] > sea bed groundOE sea-groundOE channela1387 sea-bottoma1400 ocean bed1638 ocean floor1820 sea bed1838 ocean basin1848 ocean bottom1855 sea-floor1855 1848 M. Somerville Physical Geogr. The velocity of a [seismic] wave is proportional to the square root of its depth, and becomes a substitute for the sounding line in fixing the mean proportional depth of different parts of this great ocean basin. 1899 Geogr. Jrnl. 13 234 If the ocean basins were not formed pre-geologically, but have grown from the changes that have occurred during the long ages of geological time, then we must seek for a cause that has acted continuously, and is acting to-day. 1990 P. Kearey & F. J. Vine Global Tectonics xl. 265 As the ocean basin evolves..deposits may become buried by sediment and reappear in collisional orogens where tectonism obscures their original setting. < as lemmas |
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