Wind-wave changes in Tokyo Bay during the Holocene: impact of sea-level change and land configuration

Katsuto Uehara

Presentation information

[J] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS16] Paleoclimatology and paleoceanography

Sat. Jun 5, 2021 9:00 AM - 10:30 AM Ch.26 (Zoom Room 26)

convener:Yusuke Okazaki(Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University), Hitoshi Hasegawa(Faculty of Science and Technology, Kochi University), Atsuko Yamazaki(Faculty of Science, Kyushu University), Akitomo Yamamoto(Japan Agency for Marine-Earth Science and TechnologyAtmosphere and Ocean Research Institute), Chairperson:Akitomo Yamamoto(Japan Agency for Marine-Earth Science and TechnologyAtmosphere and Ocean Research Institute)

9:30 AM - 9:45 AM

[MIS16-13] Wind-wave changes in Tokyo Bay during the Holocene: impact of sea-level change and land configuration

*Katsuto Uehara¹ (1.Kyushu University)

Keywords:paleowave reconstruction, numerical modeling, Holocene, estuary

A paleowave simulation has been carried out to reconstruct changes in the wind-wave field in Tokyo Bay during the Holocene, when the bay configuration altered greatly due to the inundation of a drawn valley associated with a rapid sea-level rise and subsequent infilling of the valley by fluvial sediments. The numerical run was conducted by combining a third-generation wave model SWAN and paleobathymetries reconstructed by the author for every 1kyr from 10ka to 4ka. A preliminary experiment made by applying uniform sea-surface winds indicated an increase of the significant wave height by 10-20% compared to the present-day state.