Ice sheet model-derived global mean sea level and whole ocean oxygen isotopes

Indian Ocean surface circulation is an important part of the global ocean conveyor belt, and is connected via two important gateways including the Indonesian Throughflow, and the Agulha Leakage. Changes in the surface hydrography of the Indian Ocean may therefore impact on the global overturning cir...

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Bibliographic Details
Main Authors: Nuber, Sophie, Rae, James W B, Zhang, Xu, Andersen, Morten L, Dumont, Matthew, Mithan, T Huw, Sun, Yuchen, de Boer, Bas, Hall, Ian R, Barker, Stephen
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
AGE
Global mean sea level
Ice sheet-topography model
ANICE-SELEN
Indian Ocean
oxygen isotope ratios
oxygen isotopes
planktic foraminifera
Salinity
Temperature
Sea surface salinity
Sea surface temperature
δ18O
ice volume effect
Ice Sheet
Planktonic foraminifera
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.955711
https://doi.org/10.1594/PANGAEA.955711
Description
Summary:Indian Ocean surface circulation is an important part of the global ocean conveyor belt, and is connected via two important gateways including the Indonesian Throughflow, and the Agulha Leakage. Changes in the surface hydrography of the Indian Ocean may therefore impact on the global overturning circulation. Using planktonic foraminifera-based reconstructions of Indian Ocean surface salinity and temperature, we find that Indian Ocean surface water salinify during glacial intensification. Here we present reconstructions of global mean sea level using the ice sheet model ANICE and benthic foraminifera oxygen isotope data from U1476 to analyse changes in mean global sea level and calculate whole ocean changes in seawater oxygen isotopes. We use this information to show that the Indian Ocean surface hydrography changed in different ways from other ocean basins during Late Pleistocene glacial-interglacial cycles.

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