Paleoceanographic dynamics of the Southern Indian Ocean reconstructed from geochemical and sedimentological proxies across the last glacial cycle ...

• Main Author: Amsler, Helen Eri
• Format: Text
• Language: English
• Published: (:null) 2020
• Subjects: 550 Earth sciences & geology; Antarctic; Southern Ocean; The Antarctic; Indian; Antarc*
• Online Access: https://dx.doi.org/10.7892/boris.147599; https://boris.unibe.ch/147599/

The Southern Ocean is believed to play an important role in Earth’s climate system as a region where a large part of the exchange between the deep ocean and the atmosphere occurs. Several processes have been identified to impact Southern Ocean dynamics and to contribute to the glacial-interglacial redistribution of CO2 between the ocean and atmosphere and therefore substantially influencing climate. The aim of this study is to further investigate the interplay of these processes during the last glacial cycle, focusing on the Indian sector of the Southern Ocean. Our geochemical and sedimentological reconstructions based on five marine sediment cores retrieved from the Southern Indian Ocean, increase the spatial and temporal resolution of available paleoceanographic records, and thereby advance our understanding towards a more complete representation of Southern Ocean dynamics. The studied cores span a meridional transect across the Subantarctic Zone (SAZ) to the Antarctic Zone (AZ) of the Southern Ocean. The ...