It is very important to determine the temporal variation of meltwater volume from the last glacial maximum (LGM) for studying climate changes and for constraining mantle rheology. Sea-level observations have been obtained at Barbados (at the LGM and in late-glacial phase) and Tahiti (in late-glacial phase), and suggest that two events of rapid sea-level rise existed at about 14,000 and 11,000 calendar years before present. We examine the total meltwater volume and temporal variation of meltwater volume by comparing sea-level observations and predictions at Barbados and Tahiti. Comparison between observations and predictions for Barbados indicates that the total meltwater volume from the LGM is 103-117 m for eustatic sea-level rise. The predicted sea-level variations at Tahiti based on the ice model satisfying observations for Barbados are, however, inconsistent with late-glacial sea-level observations at Tahiti. Thus two events of rapid sea-level rise are not supported from the comparison between observations and predictions at Tahiti. More in situ observational data are required for the period from the LGM to late-glacial phase in order to study the relationship between rapid sea-level rise and climate change.
All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
- Earth-Surface Processes