Long-term simulation of Antarctic ice sheet for oldest-ice core topic

• Main Authors: Saito, F., Obase, T., Abe-Ouchi, A.
• Format: Conference Object
• Language: English
• Published: 2023
• Subjects: Antarctic; Dome Fuji; Antarc*; ice core; Ice Sheet
• Online Access: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016654

Ice divides are important locations for deep drilling on ice-sheets. Precise computation around a divide requires spatially very high resolution due to the characteristics of ice-flow around the divide. There are several methods to compute the age of ice. One is to apply a very high resolution 1-d column model on target sites. In this case the history of ice-sheet thickness and velocity is needed to be specified, which can be obtained using 3-d transient ice sheet models. A series of numerical experiments of Antarctic ice sheet using an ice-sheet model IcIES with various configuration are perfomed to evaluate possibility of changes in the position and elevation of Dome Fuji, as well as changes in the long-term ice-sheet volume. Their sensitivity to the evolution of glacial/interglacial climate and ice-grounded will be discussed, in particular to discuss its influence for ice-core dating computation.