CLIMATE: L3 stable isotpes and rosetta stone

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  • Created by: Elena
  • Created on: 01-04-14 23:22
Oxygen isotopes: what is the difference between a glacial and an interglacial period?
glacial = depletion of 160 in ocean water and an enrichment in ice (waterr evaporates, is locked in ice) while interglacial - enrichment of 16O in ocean and depletion in ice
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What are the principles of oxygen isotopes?
Every element has no. of protons (gives it unique atomic no.), neutrons give it atomic weight. - O isotopes vary in weight, some are unstable. 16o = light. 18o = heavy
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ocean core paleoclimate record: what are the two forms of proxy data?
a) ORGANIC - planktonic, benthic forams b) ice rafted debris, icebergs
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Main examples from ice core records
Camp Century 1966, Byrd Station 1968, Vostok 1985, GRIP 1992, EPICA (2000)
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what is the term used for long term cooling cycles and abrupt warming?
Bond cycles - climate's flickering switch.
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Card 2

Front

What are the principles of oxygen isotopes?

Back

Every element has no. of protons (gives it unique atomic no.), neutrons give it atomic weight. - O isotopes vary in weight, some are unstable. 16o = light. 18o = heavy

Card 3

Front

ocean core paleoclimate record: what are the two forms of proxy data?

Back

Preview of the front of card 3

Card 4

Front

Main examples from ice core records

Back

Preview of the front of card 4

Card 5

Front

what is the term used for long term cooling cycles and abrupt warming?

Back

Preview of the front of card 5

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