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Paleoclimatology (thesaurus)

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Concept information

Terme préférentiel

interglacial  

Définition

  • An interglacial period (or alternatively interglacial, interglaciation) is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periods within an ice age. The current Holocene interglacial began at the end of the Pleistocene, about 11,700 years ago. During interglacials, such as the present one, the climate warms and the tundra recedes polewards following the ice sheets. Forests return to areas that once supported tundra vegetation. Interglacials are identified on land or in shallow epicontinental seas by their paleontology. Floral and faunal remains of species pointing to temperate climate and indicating a specific age are used to identify particular interglacials. Interglacials and glacials coincide with cyclic changes in Earth's orbit. Three orbital variations contribute to interglacials. The first is a change in Earth's orbit around the Sun, or eccentricity. The second is a shift in the tilt of Earth's axis, or obliquity. The third is the wobbling motion of Earth's axis, or precession. (Adapted from: https://en.wikipedia.org/wiki/Interglacial)

Synonyme(s)

  • interglacial cycle
  • interglacial period
  • interglaciation

Traductions

  • français

  • cycle interglaciaire
  • interglaciation
  • période interglaciaire

URI

http://data.loterre.fr/ark:/67375/QX8-PQ8FVKX8-3

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