Mezgec et al Polar Symposium 2015.pdf (656.75 kB)
Climatic and environmental changes during the Last Glacial - Interglacial transition in the Ross Sea, Antarctica
poster
posted on 2017-03-06, 11:36 authored by Karin Mezgec, Ester Colizza, Lucilla CapotondiLucilla Capotondi, Federico Giglio, Boo-Keun Khim, Leonardo Langone, Valentina Prelz, Jong Kuk HongThis 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).
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).
