Collapses of the Arctic sector of the Laurentide ice sheet in the western Arctic Ocean during the last glacial period

Kenta Suzuki1, Masanobu Yamamoto1, Tomohisa Irino2, Seung-il Nam3 and Toshiro Yamanaka4, (1)Hokkaido University, Sapporo, Japan, (2)Hokkaido University, Faculty of Environmental Earth Science, Sapporo, Japan, (3)Korea Polar Research Institute, Incheon, South Korea, (4)Okayama University, Okayama, Japan