Climatic and environmental changes during the Last Glacial - Interglacial transition in the Ross Sea, Antarctica

• Main Authors: Mezgec, Karin, Colizza, Ester, Capotondi, Lucilla, Giglio, Federico, Boo-Keun Khim, Langone, Leonardo, Prelz, Valentina, Hong, Jong Kuk
• Format: Still Image
• Language: unknown
• Published: figshare 2017
• Subjects: 50101 Ecological Impacts of Climate Change; FOS Earth and related environmental sciences; 50206 Environmental Monitoring; Geology; Paleoclimatology; Antarctic; Central Basin; Italica; Joides Basin; Ross Sea; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.6084/m9.figshare.4725724; https://figshare.com/articles/poster/Climatic_and_environmental_changes_during_the_Last_Glacial_-_Interglacial_transition_in_the_Ross_Sea_Antarctica/4725724

This study focuses on the investigation of the palaeoclimatic and palaeoenvironmental changes which occurred during the last glacial and interglacial time interval and of the influence of palaeoceanographic alterations recorded in the continental shelf and continental slope of the western Ross Sea (WRS). A great deal of physical (paleomagnetism, magnetic susceptibility, grain size), chemical-geochemical (organic carbon, biogenic silica and CaCO3 content, major and trace elements) and biological (diatoms and foraminifera assemblages) analyses were performed on sediments of four gravity cores and two box cores collected in the WRS. C 14 dating measurements were done on the organic matter from selected samples. The uncorrected ages of the superficial sediments of each box core was used to correct the ages of the corresponding core. Here we present the main results obtained from diatom analyses performed on: • Core ANTA99-cJ3: the core was collected by R/V ITALICA during the PNRA Antarctic cruise of 1999 in the Joides Basin. • Cores ANTA95-98C, KI13-C1, KI13-C2, box cores KI13-bc4 and KI13-bc2: cores and box cores are located in the slope-basin area of the Central Basin (unofficial name). Core ANTA95-98C was collected by R/V ITALICA during Antarctic summer 1995 in the framework of the Italian PNRA Project, while core KI13-C1, KI13-C2 and the three box cores were collected during the KOPRI ANA03B cruise on board the IBRV ARAON in February 2013 through a joint project between Korea and Italy (K-PORT and PNRA/ROSSLOPE Projects).