Development of landscape evolution models for the last glacial-inter glacial cycle on the Kamikita coastal plain, NE Japan

Abstract

In the safety assessment of intermediate-level radioactive waste disposal (the safety assessment period of ~10⁵ years), numerical landscape evolution models (LEMs) are invaluable to assess the future considering future climate change. However, the applicability of LEMs to coastal areas over a span of 10⁵ years has not been verified. In this study, we introduced the marine deposition model to the LEMs (JAEAsmtp). Then, the applicability of JAEAsmtp was confirmed through the reconstruction of landscape evolution over the last glacial-interglacial cycle on the Kamikita coastal plain, where marine terraces (MIS5e, 7, 9) are widely distributed.