著者

中田,正夫

出版者

日本地形学連合

雑誌

地形

巻号頁・発行日

vol.32, no.3, 2011-07-25

---

During the growth of an ice sheet the continental crust beneath and near the ice sheet subsides, while in the decay period of glacier ice the crust is unloaded and rebounds. The process is called glacio-isostasy. The volume of sea water decreases during ice growth, while it increases during ice decay. The changing water load causes the vertical movement of the oceanic crust. The process is referred to as hydro-isostasy. These two processes combined are involved in glacio-hydro isostasy, i.e., the Earth's response to changes in ice and water loading during glacial cycle. The outline of a model for glacio-hydro isostasy is described and an application of the model to the northwestern Kyushu area is briefly introduced.