基礎水理・数値解析

[II-120] ANALYSIS OF THE EFFECT OF GRID RESOLUTION ON ENVIRONMENTAL DNA MODELING

〇Edwin Muchebve¹, Yuriko Takayama¹, Maiko Akatsuka¹, Kazunori Ito¹ (1.Taisei Corporation)

Keywords:environmental DNA, particle tracking, grid resolution, numerical simulation

Environmental DNA (eDNA) dynamics in marine waters are dependent on the distribution of aquatic species and water transport. The properties of species are assumed to be uniform in each grid cell and chemical species are represented by concentration (mass per volume) in numerical Eulerian grid models. Hence, it is important to determine the optimal grid resolution, both horizontal and vertical. The simulation results of particle tracking showed that the grid resolution, to some extent, affects the flow path, and eDNA transport resulting in biased temporal and spatial distribution of the eDNA particles.