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单词 Little Ice Age
释义
Little Ice Age

Geology and Earth Sciences
  • A period between about 1350 and 1860 during which the global climate became generally harsher and there was a worldwide expansion of glaciers. The effects have been recorded in the Alps, Norway, and Iceland, where farm land and buildings were destroyed, and in many other parts of both hemispheres. There were times of especial severity during this period, e.g. the early 1600s when glaciers were particularly active in the Chamonix valley, in the French Alps.


Geography
  • The phase between ad 1550 and 1850 when temperatures were globally lower than they are at present (Thompson et al. (1986) Science 234, 4774). Little Ice Age glacierization occurred over about 650 years and can be defined most precisely in the European Alps (c. ad 1300–1950) when extended glaciers were larger than before or since. Little Ice Age climate is defined as a shorter time interval of about 330 years (c. ad 1570–1900) when Northern Hemisphere summer temperatures (land areas north of 20° N) fell significantly below the ad 1961–1990 mean (Matthews et al. (2005) Geografiska A 87, 1).


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