Japan Geoscience Union Meeting 2018

Presentation information

[EE] Evening Poster

S (Solid Earth Sciences) » S-CG Complex & General

[S-CG55] Various interactions between solid Earth and climates

Mon. May 21, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Takashi Nakagawa(JAMSTEC/MAT), Yusuke Yokoyama(Atmosphere and Ocean Research Institute, University of Tokyo), Jun'ichi Okuno(国立極地研究所, 共同), Tadashi Yamasaki(National Institute of Advanced Industrial Science and Technology)

[SCG55-P02] Northern Hemisphere ice-sheets simulation using a coupled ice-sheet/earth rebound/climate model

*Fuyuki SAITO1, Ayako Abe-Ouchi2,1, Jun'ichi Okuno3 (1.JAMSTEC, 2.AORI Univ. Tokyo, 3.NIPR)

Keywords:Ice-sheet modeling, Isostatic rebound

Feedback between changes in the ice-sheet/climate and the earth's isostatic rebound is considered to be a key process for the evolution of the past Northern Hemisphere ice-sheets in glacial cycles. We report numerical experiments of the past northern hemisphere ice-sheets during several hundred thousands years using a coupled ice-sheet/earth rebound model with combination of climate parameterization computed based on a series of sensitivity studies using the general circulation model MIROC (Abe-Ouchi 2013). A self-gravitating visco-elastic multi-layer model developed by Okuno and Nakada (2001) is coupled to an numerical ice-sheet model IcIES (Abe-Ouchi 2013). The results are compared with the previous IcIES results which coupled with a simple isostatic model (i.e., a local lithosphere/relaxing asthenosphere) which is controled by two parameters (the mantle density and the time scale of isostatic response), in order to discuss the effect of more realistic visco-elastic structure of the earth.