Sea-level and deep water temperature changes derived from benthic foraminifera isotopic records
Abstract
We show that robust regressions can be established between relative sea-level (RSL) data and benthic foraminifera oxygen isotopic ratios from the North Atlantic and Equatorial Pacific Ocean over the last climatic cycle. We then apply these regressions to long benthic isotopic records retrieved at one North Atlantic and one Equatorial Pacific site to build a composite RSL curve, as well as the associated confidence interval, over the last four climatic cycles. Our proposed reconstruction of RSL is in good agreement with the sparse RSL data available prior to the last climatic cycle. We compute bottom water temperature changes at the two sites and at one Southern Indian Ocean site, taking into account potential variations in North Atlantic local deep water
- Publication:
-
Quaternary Science Reviews
- Pub Date:
- January 2002
- DOI:
- 10.1016/S0277-3791(01)00101-9
- Bibcode:
- 2002QSRv...21..295W