单词 | base surge |
释义 | > as lemmasbase surge base surge n. a ringlike turbulent cloud of gas, ash, debris, etc., that spreads rapidly outwards at ground or sea level from the site of a nuclear explosion, a meteorite impact, or a volcanic eruption. ΚΠ 1947 Huronite & Daily Plainsman (Huron, S. Dakota) 13 July 11/5 Oceanographers are still pondering the unprecedented base surge. 1969 Science 26 Sept. 1349/3 Base surges from the 1965 phreatic volcanic eruption of Taal Volcano..deposited dunelike forms. 1990 Antarctic Sci. 2 345 The upper member..consists of base surge deposits with minor air-fall and thin pyroclastic flow deposits. 2004 Ann. Brit. School Athens 99 176 Portions of the roofs of the lower buildings that escaped the volcanic base surge are still preserved in situ. < as lemmas |
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