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Seasonal stable oxygen isotope cycles in an Antarctic bivalve shell (Laternula elliptica): a quantitative archive of ice-melt runoff
Tada, Y.; Wada, H.; Miura, H. (2006). Seasonal stable oxygen isotope cycles in an Antarctic bivalve shell (Laternula elliptica): a quantitative archive of ice-melt runoff. Antarctic Science 18(1): 111-115
In: Antarctic Science. Cambridge University Press: Oxford. ISSN 0954-1020, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Tada, Y.
  • Wada, H.
  • Miura, H.

Abstract
    Oxygen isotope ratios in the shell of a Recent Antarctic marine bivalve Laternula elliptica are shown and their potential for environmental reconstruction is discussed. The shell δ18O profiles of this species represent the seasonal change in melted ice water inflow. Oscillations in the shell δ18O values reflect seasonal change in seawater δ18O values, caused by an addition of meltwater in summer. Since annual temperature variation is minimal and the inflow of the regional ice-melt is the dominant control on the shell δ18O values, the oxygen isotope record of L. elliptica is a quantitative indicator of the palaeo-ice-melting events in the Antarctic continental margin.

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