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Temperature and surface-ocean water balance of the mid-Holocene tropical western Pacific

Journal Article


Abstract


  • Skeletal Sr/Ca and 18O/16O rations in corals from the Great Barrier Reef, Australia, indicate that the tropical ocean surface ~5350 years ago was 1°C warmer and enriched in 18O by 0.5 per mil relative to modern seawater. The results suggest that the temperature increase enhanced the evaporative enrichment of 18O in seawater. Transport of part of the additional atmospheric water vapor to extratropical latitudes may have sustained the 18O/16O anomaly. The reduced glacial-Holocene shift in seawater 18O/16O ratio produced by the mid-Holecene 18O enrichment may help to reconcile the different temperature histories for the last deglaciation given by coral Sr/Ca thermometry and foraminiferal oxygen- isotope records.

Publication Date


  • 1998

Citation


  • Gagan, M. K., Ayliffe, L. K., Hopley, D., Cali, J. A., Mortimer, G. E., Chappell, J., . . . Head, M. J. (1998). Temperature and surface-ocean water balance of the mid-Holocene tropical western Pacific. Science, 279(5353), 1014-1017. doi:10.1126/science.279.5353.1014

Scopus Eid


  • 2-s2.0-0032512734

Web Of Science Accession Number


Start Page


  • 1014

End Page


  • 1017

Volume


  • 279

Issue


  • 5353

Abstract


  • Skeletal Sr/Ca and 18O/16O rations in corals from the Great Barrier Reef, Australia, indicate that the tropical ocean surface ~5350 years ago was 1°C warmer and enriched in 18O by 0.5 per mil relative to modern seawater. The results suggest that the temperature increase enhanced the evaporative enrichment of 18O in seawater. Transport of part of the additional atmospheric water vapor to extratropical latitudes may have sustained the 18O/16O anomaly. The reduced glacial-Holocene shift in seawater 18O/16O ratio produced by the mid-Holecene 18O enrichment may help to reconcile the different temperature histories for the last deglaciation given by coral Sr/Ca thermometry and foraminiferal oxygen- isotope records.

Publication Date


  • 1998

Citation


  • Gagan, M. K., Ayliffe, L. K., Hopley, D., Cali, J. A., Mortimer, G. E., Chappell, J., . . . Head, M. J. (1998). Temperature and surface-ocean water balance of the mid-Holocene tropical western Pacific. Science, 279(5353), 1014-1017. doi:10.1126/science.279.5353.1014

Scopus Eid


  • 2-s2.0-0032512734

Web Of Science Accession Number


Start Page


  • 1014

End Page


  • 1017

Volume


  • 279

Issue


  • 5353